patrickfleith/astro-mcq · Datasets at Hugging Face

id int64 0 199	uid stringlengths 36 36	question stringlengths 17 437	permutation_idx int64 0 2	choices listlengths 3 6	labels listlengths 3 6	prompt stringlengths 72 709	expected_output stringlengths 4 285
0	ff0e8305-73e0-404a-a775-4e7be538d99b	True or False? An object that is not accelerating or decelerating has no forces acting on it.	0	[ "True", "False", "Impossible to say without more information" ]	[ 0, 1, 0 ]	True or False? An object that is not accelerating or decelerating has no forces acting on it. A. True B. False C. Impossible to say without more information	B. False
0	ff0e8305-73e0-404a-a775-4e7be538d99b	True or False? An object that is not accelerating or decelerating has no forces acting on it.	1	[ "False", "True", "Impossible to say without more information" ]	[ 1, 0, 0 ]	True or False? An object that is not accelerating or decelerating has no forces acting on it. A. False B. True C. Impossible to say without more information	A. False
0	ff0e8305-73e0-404a-a775-4e7be538d99b	True or False? An object that is not accelerating or decelerating has no forces acting on it.	2	[ "True", "Impossible to say without more information", "False" ]	[ 0, 0, 1 ]	True or False? An object that is not accelerating or decelerating has no forces acting on it. A. True B. Impossible to say without more information C. False	C. False
1	40a73e51-5eb4-46d3-baab-8acd624f2287	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...	0	[ "increases", "decreases", "remains the same" ]	[ 0, 1, 0 ]	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. increases B. decreases C. remains the same	B. decreases
1	40a73e51-5eb4-46d3-baab-8acd624f2287	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...	1	[ "remains the same", "increases", "decreases" ]	[ 0, 0, 1 ]	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. remains the same B. increases C. decreases	C. decreases
1	40a73e51-5eb4-46d3-baab-8acd624f2287	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...	2	[ "remains the same", "decreases", "increases" ]	[ 0, 1, 0 ]	Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. remains the same B. decreases C. increases	B. decreases
2	883f8ed7-8b2a-4671-80d3-f68791fa4118	Which affirmation is true when talking about Earth’s potential energy?	0	[ "The potential energy is positive", "None of the above answers", "The potential energy is negative", "The potential energy is constant" ]	[ 0, 0, 1, 0 ]	Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is positive B. None of the above answers C. The potential energy is negative D. The potential energy is constant	C. The potential energy is negative
2	883f8ed7-8b2a-4671-80d3-f68791fa4118	Which affirmation is true when talking about Earth’s potential energy?	1	[ "The potential energy is negative", "The potential energy is positive", "The potential energy is constant", "None of the above answers" ]	[ 1, 0, 0, 0 ]	Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is negative B. The potential energy is positive C. The potential energy is constant D. None of the above answers	A. The potential energy is negative
2	883f8ed7-8b2a-4671-80d3-f68791fa4118	Which affirmation is true when talking about Earth’s potential energy?	2	[ "The potential energy is negative", "The potential energy is constant", "The potential energy is positive", "None of the above answers" ]	[ 1, 0, 0, 0 ]	Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is negative B. The potential energy is constant C. The potential energy is positive D. None of the above answers	A. The potential energy is negative
3	7667b6ef-31e5-4ff3-87e2-65f9a4467551	Why do we talk about microgravity in LEO?	0	[ "The free-fall trajectory gets perturbed", "None of the above answers", "In LEO orbits, the Earth’s gravity is not exactly zero", "All the external forces are not cancelling exactly" ]	[ 1, 0, 0, 0 ]	Why do we talk about microgravity in LEO? A. The free-fall trajectory gets perturbed B. None of the above answers C. In LEO orbits, the Earth’s gravity is not exactly zero D. All the external forces are not cancelling exactly	A. The free-fall trajectory gets perturbed
3	7667b6ef-31e5-4ff3-87e2-65f9a4467551	Why do we talk about microgravity in LEO?	1	[ "All the external forces are not cancelling exactly", "In LEO orbits, the Earth’s gravity is not exactly zero", "The free-fall trajectory gets perturbed", "None of the above answers" ]	[ 0, 0, 1, 0 ]	Why do we talk about microgravity in LEO? A. All the external forces are not cancelling exactly B. In LEO orbits, the Earth’s gravity is not exactly zero C. The free-fall trajectory gets perturbed D. None of the above answers	C. The free-fall trajectory gets perturbed
3	7667b6ef-31e5-4ff3-87e2-65f9a4467551	Why do we talk about microgravity in LEO?	2	[ "In LEO orbits, the Earth’s gravity is not exactly zero", "All the external forces are not cancelling exactly", "None of the above answers", "The free-fall trajectory gets perturbed" ]	[ 0, 0, 0, 1 ]	Why do we talk about microgravity in LEO? A. In LEO orbits, the Earth’s gravity is not exactly zero B. All the external forces are not cancelling exactly C. None of the above answers D. The free-fall trajectory gets perturbed	D. The free-fall trajectory gets perturbed
4	b855830d-0498-4c21-8aca-ac69c917178c	To what wavelength is the atmosphere the most transparent?	0	[ "Infra Red", "X-rays", "Radio Waves", "Visible light" ]	[ 0, 0, 1, 0 ]	To what wavelength is the atmosphere the most transparent? A. Infra Red B. X-rays C. Radio Waves D. Visible light	C. Radio Waves
4	b855830d-0498-4c21-8aca-ac69c917178c	To what wavelength is the atmosphere the most transparent?	1	[ "Visible light", "X-rays", "Radio Waves", "Infra Red" ]	[ 0, 0, 1, 0 ]	To what wavelength is the atmosphere the most transparent? A. Visible light B. X-rays C. Radio Waves D. Infra Red	C. Radio Waves
4	b855830d-0498-4c21-8aca-ac69c917178c	To what wavelength is the atmosphere the most transparent?	2	[ "Visible light", "Radio Waves", "X-rays", "Infra Red" ]	[ 0, 1, 0, 0 ]	To what wavelength is the atmosphere the most transparent? A. Visible light B. Radio Waves C. X-rays D. Infra Red	B. Radio Waves
5	e8663499-3be2-4284-88b1-6bada5682f75	In the atmosphere and space environment, what best describes the so-called airglow?	0	[ "Photo ionization of oxygen", "Photo Ionization of Hydrogen", "Northern lights", "Diffraction of the Sun light in the upper layers of the atmosphere" ]	[ 1, 0, 0, 0 ]	In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Photo Ionization of Hydrogen C. Northern lights D. Diffraction of the Sun light in the upper layers of the atmosphere	A. Photo ionization of oxygen
5	e8663499-3be2-4284-88b1-6bada5682f75	In the atmosphere and space environment, what best describes the so-called airglow?	1	[ "Photo ionization of oxygen", "Northern lights", "Diffraction of the Sun light in the upper layers of the atmosphere", "Photo Ionization of Hydrogen" ]	[ 1, 0, 0, 0 ]	In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Northern lights C. Diffraction of the Sun light in the upper layers of the atmosphere D. Photo Ionization of Hydrogen	A. Photo ionization of oxygen
5	e8663499-3be2-4284-88b1-6bada5682f75	In the atmosphere and space environment, what best describes the so-called airglow?	2	[ "Photo ionization of oxygen", "Diffraction of the Sun light in the upper layers of the atmosphere", "Photo Ionization of Hydrogen", "Northern lights" ]	[ 1, 0, 0, 0 ]	In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Diffraction of the Sun light in the upper layers of the atmosphere C. Photo Ionization of Hydrogen D. Northern lights	A. Photo ionization of oxygen
6	1b6dbef8-074c-47b0-aba9-5b291196850d	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?	0	[ "troposphere, mesosphere, stratosphere, thermosphere", "troposphere, mesosphere, thermosphere, stratosphere", "troposphere, stratosphere, mesosphere, thermosphere", "thermosphere, troposphere, stratosphere, mesosphere" ]	[ 0, 0, 1, 0 ]	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, stratosphere, thermosphere B. troposphere, mesosphere, thermosphere, stratosphere C. troposphere, stratosphere, mesosphere, thermosphere D. thermosphere, troposphere, stratosphere, mesosphere	C. troposphere, stratosphere, mesosphere, thermosphere
6	1b6dbef8-074c-47b0-aba9-5b291196850d	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?	1	[ "troposphere, mesosphere, thermosphere, stratosphere", "thermosphere, troposphere, stratosphere, mesosphere", "troposphere, stratosphere, mesosphere, thermosphere", "troposphere, mesosphere, stratosphere, thermosphere" ]	[ 0, 0, 1, 0 ]	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, thermosphere, stratosphere B. thermosphere, troposphere, stratosphere, mesosphere C. troposphere, stratosphere, mesosphere, thermosphere D. troposphere, mesosphere, stratosphere, thermosphere	C. troposphere, stratosphere, mesosphere, thermosphere
6	1b6dbef8-074c-47b0-aba9-5b291196850d	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?	2	[ "troposphere, mesosphere, stratosphere, thermosphere", "troposphere, mesosphere, thermosphere, stratosphere", "thermosphere, troposphere, stratosphere, mesosphere", "troposphere, stratosphere, mesosphere, thermosphere" ]	[ 0, 0, 0, 1 ]	A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, stratosphere, thermosphere B. troposphere, mesosphere, thermosphere, stratosphere C. thermosphere, troposphere, stratosphere, mesosphere D. troposphere, stratosphere, mesosphere, thermosphere	D. troposphere, stratosphere, mesosphere, thermosphere
7	9d24c8a3-5a62-4b10-a5c6-82a9a7173042	What are the Van Allen belts?	0	[ "Low radiation regions", "The region between 90 and 100 km altitude", "Radiation belts", "Much used orbits for telecommunication" ]	[ 0, 0, 1, 0 ]	What are the Van Allen belts? A. Low radiation regions B. The region between 90 and 100 km altitude C. Radiation belts D. Much used orbits for telecommunication	C. Radiation belts
7	9d24c8a3-5a62-4b10-a5c6-82a9a7173042	What are the Van Allen belts?	1	[ "Radiation belts", "The region between 90 and 100 km altitude", "Much used orbits for telecommunication", "Low radiation regions" ]	[ 1, 0, 0, 0 ]	What are the Van Allen belts? A. Radiation belts B. The region between 90 and 100 km altitude C. Much used orbits for telecommunication D. Low radiation regions	A. Radiation belts
7	9d24c8a3-5a62-4b10-a5c6-82a9a7173042	What are the Van Allen belts?	2	[ "Radiation belts", "Much used orbits for telecommunication", "Low radiation regions", "The region between 90 and 100 km altitude" ]	[ 1, 0, 0, 0 ]	What are the Van Allen belts? A. Radiation belts B. Much used orbits for telecommunication C. Low radiation regions D. The region between 90 and 100 km altitude	A. Radiation belts
8	45402b06-b7b3-46b0-ae5c-1d3ad697d8b4	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?	0	[ "the question is not correct, the outer belt is more harmful for satellites.", "Inner radiation traps protons which are more likely to damage on-board electronics.", "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites." ]	[ 0, 1, 0, 0 ]	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. the question is not correct, the outer belt is more harmful for satellites. B. Inner radiation traps protons which are more likely to damage on-board electronics. C. Inner radiation traps space debris which damage the structure of satellites. D. Inner radiation modify the magnetic field and will damage optical system of satellites.	B. Inner radiation traps protons which are more likely to damage on-board electronics.
8	45402b06-b7b3-46b0-ae5c-1d3ad697d8b4	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?	1	[ "Inner radiation traps protons which are more likely to damage on-board electronics.", "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites.", "the question is not correct, the outer belt is more harmful for satellites." ]	[ 1, 0, 0, 0 ]	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. Inner radiation traps protons which are more likely to damage on-board electronics. B. Inner radiation traps space debris which damage the structure of satellites. C. Inner radiation modify the magnetic field and will damage optical system of satellites. D. the question is not correct, the outer belt is more harmful for satellites.	A. Inner radiation traps protons which are more likely to damage on-board electronics.
8	45402b06-b7b3-46b0-ae5c-1d3ad697d8b4	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?	2	[ "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation traps protons which are more likely to damage on-board electronics.", "the question is not correct, the outer belt is more harmful for satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites." ]	[ 0, 1, 0, 0 ]	Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. Inner radiation traps space debris which damage the structure of satellites. B. Inner radiation traps protons which are more likely to damage on-board electronics. C. the question is not correct, the outer belt is more harmful for satellites. D. Inner radiation modify the magnetic field and will damage optical system of satellites.	B. Inner radiation traps protons which are more likely to damage on-board electronics.
9	920728e6-584b-46bd-b596-80aaab4ccfad	The sunspot number is a value that changes with time, with a period of approximately...	0	[ "9 years", "13 years", "7 years", "11 years" ]	[ 0, 0, 0, 1 ]	The sunspot number is a value that changes with time, with a period of approximately... A. 9 years B. 13 years C. 7 years D. 11 years	D. 11 years
9	920728e6-584b-46bd-b596-80aaab4ccfad	The sunspot number is a value that changes with time, with a period of approximately...	1	[ "13 years", "9 years", "7 years", "11 years" ]	[ 0, 0, 0, 1 ]	The sunspot number is a value that changes with time, with a period of approximately... A. 13 years B. 9 years C. 7 years D. 11 years	D. 11 years
9	920728e6-584b-46bd-b596-80aaab4ccfad	The sunspot number is a value that changes with time, with a period of approximately...	2	[ "11 years", "13 years", "7 years", "9 years" ]	[ 1, 0, 0, 0 ]	The sunspot number is a value that changes with time, with a period of approximately... A. 11 years B. 13 years C. 7 years D. 9 years	A. 11 years
11	433d3c7b-4f56-4934-ac4b-d513d975c33b	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?	0	[ "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime", "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime" ]	[ 0, 0, 1, 0 ]	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime B. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime D. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime	C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime
11	433d3c7b-4f56-4934-ac4b-d513d975c33b	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?	1	[ "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime", "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime" ]	[ 0, 0, 1, 0 ]	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime B. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime D. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime	C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime
11	433d3c7b-4f56-4934-ac4b-d513d975c33b	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?	2	[ "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime" ]	[ 1, 0, 0, 0 ]	Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime B. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime C. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime D. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime	A. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime
12	e8128a5b-c008-49cd-ba2e-e859042da89d	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)	0	[ "Near the equator", "Close to Antarctic and Arctic circles", "Iceland or northern Scandinavia", "Latin America" ]	[ 0, 1, 1, 0 ]	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Near the equator B. Close to Antarctic and Arctic circles C. Iceland or northern Scandinavia D. Latin America	B. Close to Antarctic and Arctic circles C. Iceland or northern Scandinavia
12	e8128a5b-c008-49cd-ba2e-e859042da89d	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)	1	[ "Latin America", "Iceland or northern Scandinavia", "Near the equator", "Close to Antarctic and Arctic circles" ]	[ 0, 1, 0, 1 ]	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Latin America B. Iceland or northern Scandinavia C. Near the equator D. Close to Antarctic and Arctic circles	B. Iceland or northern Scandinavia D. Close to Antarctic and Arctic circles
12	e8128a5b-c008-49cd-ba2e-e859042da89d	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)	2	[ "Latin America", "Close to Antarctic and Arctic circles", "Near the equator", "Iceland or northern Scandinavia" ]	[ 0, 1, 0, 1 ]	Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Latin America B. Close to Antarctic and Arctic circles C. Near the equator D. Iceland or northern Scandinavia	B. Close to Antarctic and Arctic circles D. Iceland or northern Scandinavia
13	81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52	What would be the most appropriate time to observe auroras?	0	[ "2023", "2018", "2029", "anytime" ]	[ 1, 0, 0, 0 ]	What would be the most appropriate time to observe auroras? A. 2023 B. 2018 C. 2029 D. anytime	A. 2023
13	81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52	What would be the most appropriate time to observe auroras?	1	[ "anytime", "2018", "2023", "2029" ]	[ 0, 0, 1, 0 ]	What would be the most appropriate time to observe auroras? A. anytime B. 2018 C. 2023 D. 2029	C. 2023
13	81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52	What would be the most appropriate time to observe auroras?	2	[ "2029", "anytime", "2018", "2023" ]	[ 0, 0, 0, 1 ]	What would be the most appropriate time to observe auroras? A. 2029 B. anytime C. 2018 D. 2023	D. 2023
14	a5a8edfe-c124-4b53-99f4-bca48e0f12fc	What is the main driver of the shape of solar prominences ?	0	[ "Magnetic fields generated by the sun", "Van Allen radiation belts", "The orbital forces of Mercury", "Earth" ]	[ 1, 0, 0, 0 ]	What is the main driver of the shape of solar prominences ? A. Magnetic fields generated by the sun B. Van Allen radiation belts C. The orbital forces of Mercury D. Earth	A. Magnetic fields generated by the sun
14	a5a8edfe-c124-4b53-99f4-bca48e0f12fc	What is the main driver of the shape of solar prominences ?	1	[ "Earth", "Van Allen radiation belts", "The orbital forces of Mercury", "Magnetic fields generated by the sun" ]	[ 0, 0, 0, 1 ]	What is the main driver of the shape of solar prominences ? A. Earth B. Van Allen radiation belts C. The orbital forces of Mercury D. Magnetic fields generated by the sun	D. Magnetic fields generated by the sun
14	a5a8edfe-c124-4b53-99f4-bca48e0f12fc	What is the main driver of the shape of solar prominences ?	2	[ "Magnetic fields generated by the sun", "Earth", "Van Allen radiation belts", "The orbital forces of Mercury" ]	[ 1, 0, 0, 0 ]	What is the main driver of the shape of solar prominences ? A. Magnetic fields generated by the sun B. Earth C. Van Allen radiation belts D. The orbital forces of Mercury	A. Magnetic fields generated by the sun
15	04ad623a-86b3-46ac-8762-ce379d9258cf	What is the difference between CMEs (Coronal Mass Ejections) and prominences ?	0	[ "There is no difference", "CMEs are only caused by radiation belt", "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "Prominences and CMEs appear at different times of the day" ]	[ 0, 0, 1, 0 ]	What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. There is no difference B. CMEs are only caused by radiation belt C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. D. Prominences and CMEs appear at different times of the day	C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.
15	04ad623a-86b3-46ac-8762-ce379d9258cf	What is the difference between CMEs (Coronal Mass Ejections) and prominences ?	1	[ "Prominences and CMEs appear at different times of the day", "CMEs are only caused by radiation belt", "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "There is no difference" ]	[ 0, 0, 1, 0 ]	What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. Prominences and CMEs appear at different times of the day B. CMEs are only caused by radiation belt C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. D. There is no difference	C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.
15	04ad623a-86b3-46ac-8762-ce379d9258cf	What is the difference between CMEs (Coronal Mass Ejections) and prominences ?	2	[ "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "CMEs are only caused by radiation belt", "There is no difference", "Prominences and CMEs appear at different times of the day" ]	[ 1, 0, 0, 0 ]	What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. B. CMEs are only caused by radiation belt C. There is no difference D. Prominences and CMEs appear at different times of the day	A. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.
16	88326631-7955-4fcd-8bb7-1a2c73fd5dd0	What is the typical lower boundary of the Van Allen belts?	0	[ "200-300 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon", "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope" ]	[ 0, 0, 0, 1 ]	What is the typical lower boundary of the Van Allen belts? A. 200-300 km, roughly the altitude of the Hubble Space Telescope B. Half-way to the Moon C. Below the ISS altitude D. 500-600 km, roughly the altitude of the Hubble Space Telescope	D. 500-600 km, roughly the altitude of the Hubble Space Telescope
16	88326631-7955-4fcd-8bb7-1a2c73fd5dd0	What is the typical lower boundary of the Van Allen belts?	1	[ "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope", "200-300 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon" ]	[ 0, 1, 0, 0 ]	What is the typical lower boundary of the Van Allen belts? A. Below the ISS altitude B. 500-600 km, roughly the altitude of the Hubble Space Telescope C. 200-300 km, roughly the altitude of the Hubble Space Telescope D. Half-way to the Moon	B. 500-600 km, roughly the altitude of the Hubble Space Telescope
16	88326631-7955-4fcd-8bb7-1a2c73fd5dd0	What is the typical lower boundary of the Van Allen belts?	2	[ "200-300 km, roughly the altitude of the Hubble Space Telescope", "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon" ]	[ 0, 0, 1, 0 ]	What is the typical lower boundary of the Van Allen belts? A. 200-300 km, roughly the altitude of the Hubble Space Telescope B. Below the ISS altitude C. 500-600 km, roughly the altitude of the Hubble Space Telescope D. Half-way to the Moon	C. 500-600 km, roughly the altitude of the Hubble Space Telescope
17	e7426a1d-3e9f-4a96-bf76-e39df49b5458	What is the global shape of the Earth radiation belts?	0	[ "Spherical", "Triangular", "Toroidal", "Rectangular" ]	[ 0, 0, 1, 0 ]	What is the global shape of the Earth radiation belts? A. Spherical B. Triangular C. Toroidal D. Rectangular	C. Toroidal
17	e7426a1d-3e9f-4a96-bf76-e39df49b5458	What is the global shape of the Earth radiation belts?	1	[ "Spherical", "Rectangular", "Toroidal", "Triangular" ]	[ 0, 0, 1, 0 ]	What is the global shape of the Earth radiation belts? A. Spherical B. Rectangular C. Toroidal D. Triangular	C. Toroidal
17	e7426a1d-3e9f-4a96-bf76-e39df49b5458	What is the global shape of the Earth radiation belts?	2	[ "Toroidal", "Triangular", "Rectangular", "Spherical" ]	[ 1, 0, 0, 0 ]	What is the global shape of the Earth radiation belts? A. Toroidal B. Triangular C. Rectangular D. Spherical	A. Toroidal
18	6249156c-13d9-4ce4-9abf-46bf65e50b60	What is the sectional profile of the Earth radiation belts?	0	[ "Banana-shaped, with the extremities close to the surface of the Earth", "Rectangular", "Disk", "Banana-shaped, with the extremities away from the Earth" ]	[ 1, 0, 0, 0 ]	What is the sectional profile of the Earth radiation belts? A. Banana-shaped, with the extremities close to the surface of the Earth B. Rectangular C. Disk D. Banana-shaped, with the extremities away from the Earth	A. Banana-shaped, with the extremities close to the surface of the Earth
18	6249156c-13d9-4ce4-9abf-46bf65e50b60	What is the sectional profile of the Earth radiation belts?	1	[ "Banana-shaped, with the extremities away from the Earth", "Rectangular", "Disk", "Banana-shaped, with the extremities close to the surface of the Earth" ]	[ 0, 0, 0, 1 ]	What is the sectional profile of the Earth radiation belts? A. Banana-shaped, with the extremities away from the Earth B. Rectangular C. Disk D. Banana-shaped, with the extremities close to the surface of the Earth	D. Banana-shaped, with the extremities close to the surface of the Earth
18	6249156c-13d9-4ce4-9abf-46bf65e50b60	What is the sectional profile of the Earth radiation belts?	2	[ "Rectangular", "Banana-shaped, with the extremities away from the Earth", "Banana-shaped, with the extremities close to the surface of the Earth", "Disk" ]	[ 0, 0, 1, 0 ]	What is the sectional profile of the Earth radiation belts? A. Rectangular B. Banana-shaped, with the extremities away from the Earth C. Banana-shaped, with the extremities close to the surface of the Earth D. Disk	C. Banana-shaped, with the extremities close to the surface of the Earth
19	e61de4a5-23be-4d82-92d0-fea5117b41a1	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)	0	[ "Measure the Sun's flux in a spectral band called H-alpha", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Count the number of sun spots" ]	[ 0, 1, 0, 1 ]	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Measure the Sun's flux in a spectral band called H-alpha B. Measure the Sun's flux at a wavelength of 10.7 cm C. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) D. Count the number of sun spots	B. Measure the Sun's flux at a wavelength of 10.7 cm D. Count the number of sun spots
19	e61de4a5-23be-4d82-92d0-fea5117b41a1	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)	1	[ "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's flux in a spectral band called H-alpha", "Count the number of sun spots" ]	[ 0, 1, 0, 1 ]	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) B. Measure the Sun's flux at a wavelength of 10.7 cm C. Measure the Sun's flux in a spectral band called H-alpha D. Count the number of sun spots	B. Measure the Sun's flux at a wavelength of 10.7 cm D. Count the number of sun spots
19	e61de4a5-23be-4d82-92d0-fea5117b41a1	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)	2	[ "Count the number of sun spots", "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's flux in a spectral band called H-alpha" ]	[ 1, 0, 1, 0 ]	The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Count the number of sun spots B. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) C. Measure the Sun's flux at a wavelength of 10.7 cm D. Measure the Sun's flux in a spectral band called H-alpha	A. Count the number of sun spots C. Measure the Sun's flux at a wavelength of 10.7 cm
20	2f361e84-1b61-42b8-85e7-382e098b3512	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?	0	[ "Up to the distance from the Sun to Earth", "A siginificant fraction of the Sun's radius", "Up to the distance from the Sun to Mercury", "Up to the size of the Earth" ]	[ 0, 0, 0, 1 ]	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. Up to the distance from the Sun to Earth B. A siginificant fraction of the Sun's radius C. Up to the distance from the Sun to Mercury D. Up to the size of the Earth	D. Up to the size of the Earth
20	2f361e84-1b61-42b8-85e7-382e098b3512	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?	1	[ "A siginificant fraction of the Sun's radius", "Up to the distance from the Sun to Earth", "Up to the size of the Earth", "Up to the distance from the Sun to Mercury" ]	[ 0, 0, 1, 0 ]	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. A siginificant fraction of the Sun's radius B. Up to the distance from the Sun to Earth C. Up to the size of the Earth D. Up to the distance from the Sun to Mercury	C. Up to the size of the Earth
20	2f361e84-1b61-42b8-85e7-382e098b3512	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?	2	[ "Up to the distance from the Sun to Mercury", "Up to the distance from the Sun to Earth", "Up to the size of the Earth", "A siginificant fraction of the Sun's radius" ]	[ 0, 0, 1, 0 ]	The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. Up to the distance from the Sun to Mercury B. Up to the distance from the Sun to Earth C. Up to the size of the Earth D. A siginificant fraction of the Sun's radius	C. Up to the size of the Earth
21	04660f0a-19fc-4b41-82c2-9f4c2245bf07	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?	0	[ "The Sun darkens from the observer point of view", "None, it's too far away", "A gust of charged particles", "The flux of light from the Sun is lowered." ]	[ 0, 0, 1, 0 ]	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. The Sun darkens from the observer point of view B. None, it's too far away C. A gust of charged particles D. The flux of light from the Sun is lowered.	C. A gust of charged particles
21	04660f0a-19fc-4b41-82c2-9f4c2245bf07	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?	1	[ "None, it's too far away", "A gust of charged particles", "The flux of light from the Sun is lowered.", "The Sun darkens from the observer point of view" ]	[ 0, 1, 0, 0 ]	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. None, it's too far away B. A gust of charged particles C. The flux of light from the Sun is lowered. D. The Sun darkens from the observer point of view	B. A gust of charged particles
21	04660f0a-19fc-4b41-82c2-9f4c2245bf07	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?	2	[ "None, it's too far away", "The flux of light from the Sun is lowered.", "A gust of charged particles", "The Sun darkens from the observer point of view" ]	[ 0, 0, 1, 0 ]	Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. None, it's too far away B. The flux of light from the Sun is lowered. C. A gust of charged particles D. The Sun darkens from the observer point of view	C. A gust of charged particles
22	a279f385-4896-4877-8c32-c265ae0f6b31	What is the magnetosphere?	0	[ "A region in Indonesia", "A spherical object composed solely of magnetic material", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles", "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object" ]	[ 0, 0, 1, 0 ]	What is the magnetosphere? A. A region in Indonesia B. A spherical object composed solely of magnetic material C. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles D. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object	C. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles
22	a279f385-4896-4877-8c32-c265ae0f6b31	What is the magnetosphere?	1	[ "A region in Indonesia", "A spherical object composed solely of magnetic material", "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles" ]	[ 0, 0, 0, 1 ]	What is the magnetosphere? A. A region in Indonesia B. A spherical object composed solely of magnetic material C. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object D. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles	D. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles
22	a279f385-4896-4877-8c32-c265ae0f6b31	What is the magnetosphere?	2	[ "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles", "A region in Indonesia", "A spherical object composed solely of magnetic material" ]	[ 0, 1, 0, 0 ]	What is the magnetosphere? A. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object B. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles C. A region in Indonesia D. A spherical object composed solely of magnetic material	B. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles
23	dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?	0	[ "It descreases", "Impossible to say, we need more information to answer", "It stays the same", "It increases" ]	[ 0, 0, 0, 1 ]	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It descreases B. Impossible to say, we need more information to answer C. It stays the same D. It increases	D. It increases
23	dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?	1	[ "It increases", "Impossible to say, we need more information to answer", "It stays the same", "It descreases" ]	[ 1, 0, 0, 0 ]	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It increases B. Impossible to say, we need more information to answer C. It stays the same D. It descreases	A. It increases
23	dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?	2	[ "It stays the same", "Impossible to say, we need more information to answer", "It increases", "It descreases" ]	[ 0, 0, 1, 0 ]	Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It stays the same B. Impossible to say, we need more information to answer C. It increases D. It descreases	C. It increases
24	8b9f71e4-c6db-45d7-8199-a83a58c31074	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?	0	[ "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.", "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance." ]	[ 0, 1, 0, 0 ]	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels. B. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.	B. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.
24	8b9f71e4-c6db-45d7-8199-a83a58c31074	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?	1	[ "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels." ]	[ 1, 0, 0, 0 ]	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent. B. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.	A. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.
24	8b9f71e4-c6db-45d7-8199-a83a58c31074	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?	2	[ "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent." ]	[ 0, 0, 0, 1 ]	Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels. B. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.	D. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.
25	274915a7-1ad4-49f5-979e-c38c3994eba4	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?	0	[ "Impossible to say", "Object Y", "Both at the same time", "Object X" ]	[ 1, 0, 0, 0 ]	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Impossible to say B. Object Y C. Both at the same time D. Object X	A. Impossible to say
25	274915a7-1ad4-49f5-979e-c38c3994eba4	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?	1	[ "Both at the same time", "Object X", "Impossible to say", "Object Y" ]	[ 0, 0, 1, 0 ]	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Both at the same time B. Object X C. Impossible to say D. Object Y	C. Impossible to say
25	274915a7-1ad4-49f5-979e-c38c3994eba4	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?	2	[ "Both at the same time", "Object Y", "Object X", "Impossible to say" ]	[ 0, 0, 0, 1 ]	An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Both at the same time B. Object Y C. Object X D. Impossible to say	D. Impossible to say
26	20566fe9-5314-4bb3-a0b7-4e9f01f8c396	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within	0	[ "25 years", "24 years", "42 years", "23 years" ]	[ 1, 0, 0, 0 ]	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 25 years B. 24 years C. 42 years D. 23 years	A. 25 years
26	20566fe9-5314-4bb3-a0b7-4e9f01f8c396	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within	1	[ "42 years", "23 years", "25 years", "24 years" ]	[ 0, 0, 1, 0 ]	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 42 years B. 23 years C. 25 years D. 24 years	C. 25 years
26	20566fe9-5314-4bb3-a0b7-4e9f01f8c396	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within	2	[ "25 years", "24 years", "23 years", "42 years" ]	[ 1, 0, 0, 0 ]	Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 25 years B. 24 years C. 23 years D. 42 years	A. 25 years
27	80824e85-50b6-4981-9056-5f91e3bd6326	Hubble's solar arrays were damaged because of collisions with:	0	[ "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteorites with a 10e-5 cm diameter", "Orbital debris", "Meteorites with a 10e-2 cm diameter", "Meteroites with a 10 cm diameter" ]	[ 0, 1, 1, 1, 0 ]	Hubble's solar arrays were damaged because of collisions with: A. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope B. Meteorites with a 10e-5 cm diameter C. Orbital debris D. Meteorites with a 10e-2 cm diameter E. Meteroites with a 10 cm diameter	B. Meteorites with a 10e-5 cm diameter C. Orbital debris D. Meteorites with a 10e-2 cm diameter
27	80824e85-50b6-4981-9056-5f91e3bd6326	Hubble's solar arrays were damaged because of collisions with:	1	[ "Orbital debris", "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteorites with a 10e-2 cm diameter", "Meteorites with a 10e-5 cm diameter", "Meteroites with a 10 cm diameter" ]	[ 1, 0, 1, 1, 0 ]	Hubble's solar arrays were damaged because of collisions with: A. Orbital debris B. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope C. Meteorites with a 10e-2 cm diameter D. Meteorites with a 10e-5 cm diameter E. Meteroites with a 10 cm diameter	A. Orbital debris C. Meteorites with a 10e-2 cm diameter D. Meteorites with a 10e-5 cm diameter
27	80824e85-50b6-4981-9056-5f91e3bd6326	Hubble's solar arrays were damaged because of collisions with:	2	[ "Meteorites with a 10e-2 cm diameter", "Meteorites with a 10e-5 cm diameter", "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteroites with a 10 cm diameter", "Orbital debris" ]	[ 1, 1, 0, 0, 1 ]	Hubble's solar arrays were damaged because of collisions with: A. Meteorites with a 10e-2 cm diameter B. Meteorites with a 10e-5 cm diameter C. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope D. Meteroites with a 10 cm diameter E. Orbital debris	A. Meteorites with a 10e-2 cm diameter B. Meteorites with a 10e-5 cm diameter E. Orbital debris
28	2772845a-52cb-4686-8cfe-b19647b0ad18	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?	0	[ "8.68 m/s^2", "1.72 m/s^2", "7.78 m/s^2", "0 m/s^2" ]	[ 1, 0, 0, 0 ]	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 8.68 m/s^2 B. 1.72 m/s^2 C. 7.78 m/s^2 D. 0 m/s^2	A. 8.68 m/s^2
28	2772845a-52cb-4686-8cfe-b19647b0ad18	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?	1	[ "1.72 m/s^2", "0 m/s^2", "8.68 m/s^2", "7.78 m/s^2" ]	[ 0, 0, 1, 0 ]	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 1.72 m/s^2 B. 0 m/s^2 C. 8.68 m/s^2 D. 7.78 m/s^2	C. 8.68 m/s^2
28	2772845a-52cb-4686-8cfe-b19647b0ad18	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?	2	[ "7.78 m/s^2", "1.72 m/s^2", "0 m/s^2", "8.68 m/s^2" ]	[ 0, 0, 0, 1 ]	The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 7.78 m/s^2 B. 1.72 m/s^2 C. 0 m/s^2 D. 8.68 m/s^2	D. 8.68 m/s^2
29	90c76998-7060-491c-a0fb-3ae580a72a22	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)	0	[ "Approximately 4", "Approximately 2", "Approximately 3", "Approximately 1", "Approximately 5" ]	[ 0, 1, 0, 0, 0 ]	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 4 B. Approximately 2 C. Approximately 3 D. Approximately 1 E. Approximately 5	B. Approximately 2
29	90c76998-7060-491c-a0fb-3ae580a72a22	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)	1	[ "Approximately 1", "Approximately 3", "Approximately 2", "Approximately 4", "Approximately 5" ]	[ 0, 0, 1, 0, 0 ]	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 1 B. Approximately 3 C. Approximately 2 D. Approximately 4 E. Approximately 5	C. Approximately 2
29	90c76998-7060-491c-a0fb-3ae580a72a22	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)	2	[ "Approximately 1", "Approximately 2", "Approximately 5", "Approximately 4", "Approximately 3" ]	[ 0, 1, 0, 0, 0 ]	What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 1 B. Approximately 2 C. Approximately 5 D. Approximately 4 E. Approximately 3	B. Approximately 2
30	6df3d9f1-800e-4b7d-b9ca-ce2ef8090718	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?	0	[ "5.4", "3.6", "1.4", "2.7", "0.2" ]	[ 1, 0, 0, 0, 0 ]	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 5.4 B. 3.6 C. 1.4 D. 2.7 E. 0.2	A. 5.4
30	6df3d9f1-800e-4b7d-b9ca-ce2ef8090718	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?	1	[ "3.6", "5.4", "2.7", "1.4", "0.2" ]	[ 0, 1, 0, 0, 0 ]	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 3.6 B. 5.4 C. 2.7 D. 1.4 E. 0.2	B. 5.4
30	6df3d9f1-800e-4b7d-b9ca-ce2ef8090718	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?	2	[ "0.2", "2.7", "3.6", "5.4", "1.4" ]	[ 0, 0, 0, 1, 0 ]	The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 0.2 B. 2.7 C. 3.6 D. 5.4 E. 1.4	D. 5.4
31	dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?	0	[ "You, by jumping the equivalent of 50 cm on Earth.", "A bullet shot by a pistol.", "None of the above.", "A tennis ball hit by Roger Federer." ]	[ 1, 1, 0, 1 ]	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. You, by jumping the equivalent of 50 cm on Earth. B. A bullet shot by a pistol. C. None of the above. D. A tennis ball hit by Roger Federer.	A. You, by jumping the equivalent of 50 cm on Earth. B. A bullet shot by a pistol. D. A tennis ball hit by Roger Federer.
31	dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?	1	[ "A tennis ball hit by Roger Federer.", "You, by jumping the equivalent of 50 cm on Earth.", "None of the above.", "A bullet shot by a pistol." ]	[ 1, 1, 0, 1 ]	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. A tennis ball hit by Roger Federer. B. You, by jumping the equivalent of 50 cm on Earth. C. None of the above. D. A bullet shot by a pistol.	A. A tennis ball hit by Roger Federer. B. You, by jumping the equivalent of 50 cm on Earth. D. A bullet shot by a pistol.
31	dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?	2	[ "None of the above.", "You, by jumping the equivalent of 50 cm on Earth.", "A tennis ball hit by Roger Federer.", "A bullet shot by a pistol." ]	[ 0, 1, 1, 1 ]	The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. None of the above. B. You, by jumping the equivalent of 50 cm on Earth. C. A tennis ball hit by Roger Federer. D. A bullet shot by a pistol.	B. You, by jumping the equivalent of 50 cm on Earth. C. A tennis ball hit by Roger Federer. D. A bullet shot by a pistol.
32	6570bf60-a707-4f9b-ad31-d7bf390a306f	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?	0	[ "The lander's chances are fair, but there is a significant risk.", "All is good, not to worry, Philae will come down for sure.", "For sure, the lander is lost." ]	[ 1, 0, 0 ]	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. The lander's chances are fair, but there is a significant risk. B. All is good, not to worry, Philae will come down for sure. C. For sure, the lander is lost.	A. The lander's chances are fair, but there is a significant risk.
32	6570bf60-a707-4f9b-ad31-d7bf390a306f	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?	1	[ "For sure, the lander is lost.", "All is good, not to worry, Philae will come down for sure.", "The lander's chances are fair, but there is a significant risk." ]	[ 0, 0, 1 ]	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. For sure, the lander is lost. B. All is good, not to worry, Philae will come down for sure. C. The lander's chances are fair, but there is a significant risk.	C. The lander's chances are fair, but there is a significant risk.
32	6570bf60-a707-4f9b-ad31-d7bf390a306f	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?	2	[ "The lander's chances are fair, but there is a significant risk.", "For sure, the lander is lost.", "All is good, not to worry, Philae will come down for sure." ]	[ 1, 0, 0 ]	The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. The lander's chances are fair, but there is a significant risk. B. For sure, the lander is lost. C. All is good, not to worry, Philae will come down for sure.	A. The lander's chances are fair, but there is a significant risk.
33	cfaa1256-9ed3-460b-b6d4-2a79e2b335f2	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)	0	[ "5.6", "5.0", "4.7", "5.3", "5.9" ]	[ 0, 0, 1, 0, 0 ]	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.6 B. 5.0 C. 4.7 D. 5.3 E. 5.9	C. 4.7
33	cfaa1256-9ed3-460b-b6d4-2a79e2b335f2	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)	1	[ "5.0", "4.7", "5.3", "5.6", "5.9" ]	[ 0, 1, 0, 0, 0 ]	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.0 B. 4.7 C. 5.3 D. 5.6 E. 5.9	B. 4.7
33	cfaa1256-9ed3-460b-b6d4-2a79e2b335f2	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)	2	[ "5.6", "5.9", "5.0", "5.3", "4.7" ]	[ 0, 0, 0, 0, 1 ]	Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.6 B. 5.9 C. 5.0 D. 5.3 E. 4.7	E. 4.7
34	bef97b27-a677-488c-9088-b835c0f3d1a8	Which formula gives the work to be performed in order to bring a unit mass from the Earth's surface to infinity? Assume that g0 is the standard gravitational acceleration for the surface of the Earth, R is the radius of the Earth, and p the atmospheric pressure.	0	[ "g0 * R * p", "g0 * R", "g0 * R^2", "g0 * R * p^2" ]	[ 0, 1, 0, 0 ]	Which formula gives the work to be performed in order to bring a unit mass from the Earth's surface to infinity? Assume that g0 is the standard gravitational acceleration for the surface of the Earth, R is the radius of the Earth, and p the atmospheric pressure. A. g0 * R * p B. g0 * R C. g0 * R^2 D. g0 * R * p^2	B. g0 * R

0

ff0e8305-73e0-404a-a775-4e7be538d99b

True or False? An object that is not accelerating or decelerating has no forces acting on it.

0

[ "True", "False", "Impossible to say without more information" ]

[ 0, 1, 0 ]

True or False? An object that is not accelerating or decelerating has no forces acting on it. A. True B. False C. Impossible to say without more information

B. False

0

ff0e8305-73e0-404a-a775-4e7be538d99b

True or False? An object that is not accelerating or decelerating has no forces acting on it.

1

[ "False", "True", "Impossible to say without more information" ]

[ 1, 0, 0 ]

True or False? An object that is not accelerating or decelerating has no forces acting on it. A. False B. True C. Impossible to say without more information

A. False

0

ff0e8305-73e0-404a-a775-4e7be538d99b

True or False? An object that is not accelerating or decelerating has no forces acting on it.

2

[ "True", "Impossible to say without more information", "False" ]

[ 0, 0, 1 ]

True or False? An object that is not accelerating or decelerating has no forces acting on it. A. True B. Impossible to say without more information C. False

C. False

1

40a73e51-5eb4-46d3-baab-8acd624f2287

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...

0

[ "increases", "decreases", "remains the same" ]

[ 0, 1, 0 ]

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. increases B. decreases C. remains the same

B. decreases

1

40a73e51-5eb4-46d3-baab-8acd624f2287

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...

1

[ "remains the same", "increases", "decreases" ]

[ 0, 0, 1 ]

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. remains the same B. increases C. decreases

C. decreases

1

40a73e51-5eb4-46d3-baab-8acd624f2287

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ...

2

[ "remains the same", "decreases", "increases" ]

[ 0, 1, 0 ]

Complete the following: During its orbital period, as a planet moves farther away from the sun, the orbital velocity of the planet ... A. remains the same B. decreases C. increases

B. decreases

2

883f8ed7-8b2a-4671-80d3-f68791fa4118

Which affirmation is true when talking about Earth’s potential energy?

0

[ "The potential energy is positive", "None of the above answers", "The potential energy is negative", "The potential energy is constant" ]

[ 0, 0, 1, 0 ]

Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is positive B. None of the above answers C. The potential energy is negative D. The potential energy is constant

C. The potential energy is negative

2

883f8ed7-8b2a-4671-80d3-f68791fa4118

Which affirmation is true when talking about Earth’s potential energy?

1

[ "The potential energy is negative", "The potential energy is positive", "The potential energy is constant", "None of the above answers" ]

[ 1, 0, 0, 0 ]

Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is negative B. The potential energy is positive C. The potential energy is constant D. None of the above answers

A. The potential energy is negative

2

883f8ed7-8b2a-4671-80d3-f68791fa4118

Which affirmation is true when talking about Earth’s potential energy?

2

[ "The potential energy is negative", "The potential energy is constant", "The potential energy is positive", "None of the above answers" ]

[ 1, 0, 0, 0 ]

Which affirmation is true when talking about Earth’s potential energy? A. The potential energy is negative B. The potential energy is constant C. The potential energy is positive D. None of the above answers

A. The potential energy is negative

3

7667b6ef-31e5-4ff3-87e2-65f9a4467551

Why do we talk about microgravity in LEO?

0

[ "The free-fall trajectory gets perturbed", "None of the above answers", "In LEO orbits, the Earth’s gravity is not exactly zero", "All the external forces are not cancelling exactly" ]

[ 1, 0, 0, 0 ]

Why do we talk about microgravity in LEO? A. The free-fall trajectory gets perturbed B. None of the above answers C. In LEO orbits, the Earth’s gravity is not exactly zero D. All the external forces are not cancelling exactly

A. The free-fall trajectory gets perturbed

3

7667b6ef-31e5-4ff3-87e2-65f9a4467551

Why do we talk about microgravity in LEO?

1

[ "All the external forces are not cancelling exactly", "In LEO orbits, the Earth’s gravity is not exactly zero", "The free-fall trajectory gets perturbed", "None of the above answers" ]

[ 0, 0, 1, 0 ]

Why do we talk about microgravity in LEO? A. All the external forces are not cancelling exactly B. In LEO orbits, the Earth’s gravity is not exactly zero C. The free-fall trajectory gets perturbed D. None of the above answers

C. The free-fall trajectory gets perturbed

3

7667b6ef-31e5-4ff3-87e2-65f9a4467551

Why do we talk about microgravity in LEO?

2

[ "In LEO orbits, the Earth’s gravity is not exactly zero", "All the external forces are not cancelling exactly", "None of the above answers", "The free-fall trajectory gets perturbed" ]

[ 0, 0, 0, 1 ]

Why do we talk about microgravity in LEO? A. In LEO orbits, the Earth’s gravity is not exactly zero B. All the external forces are not cancelling exactly C. None of the above answers D. The free-fall trajectory gets perturbed

D. The free-fall trajectory gets perturbed

4

b855830d-0498-4c21-8aca-ac69c917178c

To what wavelength is the atmosphere the most transparent?

0

[ "Infra Red", "X-rays", "Radio Waves", "Visible light" ]

[ 0, 0, 1, 0 ]

To what wavelength is the atmosphere the most transparent? A. Infra Red B. X-rays C. Radio Waves D. Visible light

C. Radio Waves

4

b855830d-0498-4c21-8aca-ac69c917178c

To what wavelength is the atmosphere the most transparent?

1

[ "Visible light", "X-rays", "Radio Waves", "Infra Red" ]

[ 0, 0, 1, 0 ]

To what wavelength is the atmosphere the most transparent? A. Visible light B. X-rays C. Radio Waves D. Infra Red

C. Radio Waves

4

b855830d-0498-4c21-8aca-ac69c917178c

To what wavelength is the atmosphere the most transparent?

2

[ "Visible light", "Radio Waves", "X-rays", "Infra Red" ]

[ 0, 1, 0, 0 ]

To what wavelength is the atmosphere the most transparent? A. Visible light B. Radio Waves C. X-rays D. Infra Red

B. Radio Waves

5

e8663499-3be2-4284-88b1-6bada5682f75

In the atmosphere and space environment, what best describes the so-called airglow?

0

[ "Photo ionization of oxygen", "Photo Ionization of Hydrogen", "Northern lights", "Diffraction of the Sun light in the upper layers of the atmosphere" ]

[ 1, 0, 0, 0 ]

In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Photo Ionization of Hydrogen C. Northern lights D. Diffraction of the Sun light in the upper layers of the atmosphere

A. Photo ionization of oxygen

5

e8663499-3be2-4284-88b1-6bada5682f75

In the atmosphere and space environment, what best describes the so-called airglow?

1

[ "Photo ionization of oxygen", "Northern lights", "Diffraction of the Sun light in the upper layers of the atmosphere", "Photo Ionization of Hydrogen" ]

[ 1, 0, 0, 0 ]

In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Northern lights C. Diffraction of the Sun light in the upper layers of the atmosphere D. Photo Ionization of Hydrogen

A. Photo ionization of oxygen

5

e8663499-3be2-4284-88b1-6bada5682f75

In the atmosphere and space environment, what best describes the so-called airglow?

2

[ "Photo ionization of oxygen", "Diffraction of the Sun light in the upper layers of the atmosphere", "Photo Ionization of Hydrogen", "Northern lights" ]

[ 1, 0, 0, 0 ]

In the atmosphere and space environment, what best describes the so-called airglow? A. Photo ionization of oxygen B. Diffraction of the Sun light in the upper layers of the atmosphere C. Photo Ionization of Hydrogen D. Northern lights

A. Photo ionization of oxygen

6

1b6dbef8-074c-47b0-aba9-5b291196850d

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?

0

[ "troposphere, mesosphere, stratosphere, thermosphere", "troposphere, mesosphere, thermosphere, stratosphere", "troposphere, stratosphere, mesosphere, thermosphere", "thermosphere, troposphere, stratosphere, mesosphere" ]

[ 0, 0, 1, 0 ]

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, stratosphere, thermosphere B. troposphere, mesosphere, thermosphere, stratosphere C. troposphere, stratosphere, mesosphere, thermosphere D. thermosphere, troposphere, stratosphere, mesosphere

C. troposphere, stratosphere, mesosphere, thermosphere

6

1b6dbef8-074c-47b0-aba9-5b291196850d

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?

1

[ "troposphere, mesosphere, thermosphere, stratosphere", "thermosphere, troposphere, stratosphere, mesosphere", "troposphere, stratosphere, mesosphere, thermosphere", "troposphere, mesosphere, stratosphere, thermosphere" ]

[ 0, 0, 1, 0 ]

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, thermosphere, stratosphere B. thermosphere, troposphere, stratosphere, mesosphere C. troposphere, stratosphere, mesosphere, thermosphere D. troposphere, mesosphere, stratosphere, thermosphere

C. troposphere, stratosphere, mesosphere, thermosphere

6

1b6dbef8-074c-47b0-aba9-5b291196850d

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through?

2

[ "troposphere, mesosphere, stratosphere, thermosphere", "troposphere, mesosphere, thermosphere, stratosphere", "thermosphere, troposphere, stratosphere, mesosphere", "troposphere, stratosphere, mesosphere, thermosphere" ]

[ 0, 0, 0, 1 ]

A rocket is launched from ESA spaceport in Kourou, French Guyana. Through which layers of the atmosphere and in what order the rocket will pass through? A. troposphere, mesosphere, stratosphere, thermosphere B. troposphere, mesosphere, thermosphere, stratosphere C. thermosphere, troposphere, stratosphere, mesosphere D. troposphere, stratosphere, mesosphere, thermosphere

D. troposphere, stratosphere, mesosphere, thermosphere

7

9d24c8a3-5a62-4b10-a5c6-82a9a7173042

What are the Van Allen belts?

0

[ "Low radiation regions", "The region between 90 and 100 km altitude", "Radiation belts", "Much used orbits for telecommunication" ]

[ 0, 0, 1, 0 ]

What are the Van Allen belts? A. Low radiation regions B. The region between 90 and 100 km altitude C. Radiation belts D. Much used orbits for telecommunication

C. Radiation belts

7

9d24c8a3-5a62-4b10-a5c6-82a9a7173042

What are the Van Allen belts?

1

[ "Radiation belts", "The region between 90 and 100 km altitude", "Much used orbits for telecommunication", "Low radiation regions" ]

[ 1, 0, 0, 0 ]

What are the Van Allen belts? A. Radiation belts B. The region between 90 and 100 km altitude C. Much used orbits for telecommunication D. Low radiation regions

A. Radiation belts

7

9d24c8a3-5a62-4b10-a5c6-82a9a7173042

What are the Van Allen belts?

2

[ "Radiation belts", "Much used orbits for telecommunication", "Low radiation regions", "The region between 90 and 100 km altitude" ]

[ 1, 0, 0, 0 ]

What are the Van Allen belts? A. Radiation belts B. Much used orbits for telecommunication C. Low radiation regions D. The region between 90 and 100 km altitude

A. Radiation belts

8

45402b06-b7b3-46b0-ae5c-1d3ad697d8b4

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?

0

[ "the question is not correct, the outer belt is more harmful for satellites.", "Inner radiation traps protons which are more likely to damage on-board electronics.", "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites." ]

[ 0, 1, 0, 0 ]

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. the question is not correct, the outer belt is more harmful for satellites. B. Inner radiation traps protons which are more likely to damage on-board electronics. C. Inner radiation traps space debris which damage the structure of satellites. D. Inner radiation modify the magnetic field and will damage optical system of satellites.

B. Inner radiation traps protons which are more likely to damage on-board electronics.

8

45402b06-b7b3-46b0-ae5c-1d3ad697d8b4

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?

1

[ "Inner radiation traps protons which are more likely to damage on-board electronics.", "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites.", "the question is not correct, the outer belt is more harmful for satellites." ]

[ 1, 0, 0, 0 ]

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. Inner radiation traps protons which are more likely to damage on-board electronics. B. Inner radiation traps space debris which damage the structure of satellites. C. Inner radiation modify the magnetic field and will damage optical system of satellites. D. the question is not correct, the outer belt is more harmful for satellites.

A. Inner radiation traps protons which are more likely to damage on-board electronics.

8

45402b06-b7b3-46b0-ae5c-1d3ad697d8b4

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ?

2

[ "Inner radiation traps space debris which damage the structure of satellites.", "Inner radiation traps protons which are more likely to damage on-board electronics.", "the question is not correct, the outer belt is more harmful for satellites.", "Inner radiation modify the magnetic field and will damage optical system of satellites." ]

[ 0, 1, 0, 0 ]

Why is the inner radiation belt harmful for satellites, and more so than the outer belt ? A. Inner radiation traps space debris which damage the structure of satellites. B. Inner radiation traps protons which are more likely to damage on-board electronics. C. the question is not correct, the outer belt is more harmful for satellites. D. Inner radiation modify the magnetic field and will damage optical system of satellites.

B. Inner radiation traps protons which are more likely to damage on-board electronics.

9

920728e6-584b-46bd-b596-80aaab4ccfad

The sunspot number is a value that changes with time, with a period of approximately...

0

[ "9 years", "13 years", "7 years", "11 years" ]

[ 0, 0, 0, 1 ]

The sunspot number is a value that changes with time, with a period of approximately... A. 9 years B. 13 years C. 7 years D. 11 years

D. 11 years

9

920728e6-584b-46bd-b596-80aaab4ccfad

The sunspot number is a value that changes with time, with a period of approximately...

1

[ "13 years", "9 years", "7 years", "11 years" ]

[ 0, 0, 0, 1 ]

The sunspot number is a value that changes with time, with a period of approximately... A. 13 years B. 9 years C. 7 years D. 11 years

D. 11 years

9

920728e6-584b-46bd-b596-80aaab4ccfad

The sunspot number is a value that changes with time, with a period of approximately...

2

[ "11 years", "13 years", "7 years", "9 years" ]

[ 1, 0, 0, 0 ]

The sunspot number is a value that changes with time, with a period of approximately... A. 11 years B. 13 years C. 7 years D. 9 years

A. 11 years

11

433d3c7b-4f56-4934-ac4b-d513d975c33b

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?

0

[ "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime", "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime" ]

[ 0, 0, 1, 0 ]

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime B. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime D. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime

C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime

11

433d3c7b-4f56-4934-ac4b-d513d975c33b

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?

1

[ "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime", "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime" ]

[ 0, 0, 1, 0 ]

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime B. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime D. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime

C. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime

11

433d3c7b-4f56-4934-ac4b-d513d975c33b

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude?

2

[ "At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime", "At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime", "At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime", "At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime" ]

[ 1, 0, 0, 0 ]

Which of the following statement(s) is or are correct(s) with respect to the solar cycle effect on satellite lifetime at a given altitude? A. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime B. At solar maximum, you have lower atmosphere density, which means less drag, and and increased satellite lifetime C. At solar minimum, you have lower atmosphere density, when means less lift for the satellite, and reduced lifetime D. At solar minimum, you have higher atmosphere density, which means more radiation, and reduced satellite lifetime

A. At solar maximum, you have higher atmosphere density, which means more drag, and reduced satellite lifetime

12

e8128a5b-c008-49cd-ba2e-e859042da89d

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)

0

[ "Near the equator", "Close to Antarctic and Arctic circles", "Iceland or northern Scandinavia", "Latin America" ]

[ 0, 1, 1, 0 ]

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Near the equator B. Close to Antarctic and Arctic circles C. Iceland or northern Scandinavia D. Latin America

B. Close to Antarctic and Arctic circles C. Iceland or northern Scandinavia

12

e8128a5b-c008-49cd-ba2e-e859042da89d

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)

1

[ "Latin America", "Iceland or northern Scandinavia", "Near the equator", "Close to Antarctic and Arctic circles" ]

[ 0, 1, 0, 1 ]

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Latin America B. Iceland or northern Scandinavia C. Near the equator D. Close to Antarctic and Arctic circles

B. Iceland or northern Scandinavia D. Close to Antarctic and Arctic circles

12

e8128a5b-c008-49cd-ba2e-e859042da89d

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply)

2

[ "Latin America", "Close to Antarctic and Arctic circles", "Near the equator", "Iceland or northern Scandinavia" ]

[ 0, 1, 0, 1 ]

Based on your understanding of the solar cycle, where would be the best place to see auroras? (select all that apply) A. Latin America B. Close to Antarctic and Arctic circles C. Near the equator D. Iceland or northern Scandinavia

B. Close to Antarctic and Arctic circles D. Iceland or northern Scandinavia

13

81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52

What would be the most appropriate time to observe auroras?

0

[ "2023", "2018", "2029", "anytime" ]

[ 1, 0, 0, 0 ]

What would be the most appropriate time to observe auroras? A. 2023 B. 2018 C. 2029 D. anytime

A. 2023

13

81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52

What would be the most appropriate time to observe auroras?

1

[ "anytime", "2018", "2023", "2029" ]

[ 0, 0, 1, 0 ]

What would be the most appropriate time to observe auroras? A. anytime B. 2018 C. 2023 D. 2029

C. 2023

13

81c4c4ae-b178-4a9d-8f2d-1f9b1a2b4d52

What would be the most appropriate time to observe auroras?

2

[ "2029", "anytime", "2018", "2023" ]

[ 0, 0, 0, 1 ]

What would be the most appropriate time to observe auroras? A. 2029 B. anytime C. 2018 D. 2023

D. 2023

14

a5a8edfe-c124-4b53-99f4-bca48e0f12fc

What is the main driver of the shape of solar prominences ?

0

[ "Magnetic fields generated by the sun", "Van Allen radiation belts", "The orbital forces of Mercury", "Earth" ]

[ 1, 0, 0, 0 ]

What is the main driver of the shape of solar prominences ? A. Magnetic fields generated by the sun B. Van Allen radiation belts C. The orbital forces of Mercury D. Earth

A. Magnetic fields generated by the sun

14

a5a8edfe-c124-4b53-99f4-bca48e0f12fc

What is the main driver of the shape of solar prominences ?

1

[ "Earth", "Van Allen radiation belts", "The orbital forces of Mercury", "Magnetic fields generated by the sun" ]

[ 0, 0, 0, 1 ]

What is the main driver of the shape of solar prominences ? A. Earth B. Van Allen radiation belts C. The orbital forces of Mercury D. Magnetic fields generated by the sun

D. Magnetic fields generated by the sun

14

a5a8edfe-c124-4b53-99f4-bca48e0f12fc

What is the main driver of the shape of solar prominences ?

2

[ "Magnetic fields generated by the sun", "Earth", "Van Allen radiation belts", "The orbital forces of Mercury" ]

[ 1, 0, 0, 0 ]

What is the main driver of the shape of solar prominences ? A. Magnetic fields generated by the sun B. Earth C. Van Allen radiation belts D. The orbital forces of Mercury

A. Magnetic fields generated by the sun

15

04ad623a-86b3-46ac-8762-ce379d9258cf

What is the difference between CMEs (Coronal Mass Ejections) and prominences ?

0

[ "There is no difference", "CMEs are only caused by radiation belt", "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "Prominences and CMEs appear at different times of the day" ]

[ 0, 0, 1, 0 ]

What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. There is no difference B. CMEs are only caused by radiation belt C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. D. Prominences and CMEs appear at different times of the day

C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.

15

04ad623a-86b3-46ac-8762-ce379d9258cf

What is the difference between CMEs (Coronal Mass Ejections) and prominences ?

1

[ "Prominences and CMEs appear at different times of the day", "CMEs are only caused by radiation belt", "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "There is no difference" ]

[ 0, 0, 1, 0 ]

What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. Prominences and CMEs appear at different times of the day B. CMEs are only caused by radiation belt C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. D. There is no difference

C. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.

15

04ad623a-86b3-46ac-8762-ce379d9258cf

What is the difference between CMEs (Coronal Mass Ejections) and prominences ?

2

[ "CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.", "CMEs are only caused by radiation belt", "There is no difference", "Prominences and CMEs appear at different times of the day" ]

[ 1, 0, 0, 0 ]

What is the difference between CMEs (Coronal Mass Ejections) and prominences ? A. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths. B. CMEs are only caused by radiation belt C. There is no difference D. Prominences and CMEs appear at different times of the day

A. CMEs do not reconnect towards the sun. They also emit in lower wave-lengths.

16

88326631-7955-4fcd-8bb7-1a2c73fd5dd0

What is the typical lower boundary of the Van Allen belts?

0

[ "200-300 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon", "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope" ]

[ 0, 0, 0, 1 ]

What is the typical lower boundary of the Van Allen belts? A. 200-300 km, roughly the altitude of the Hubble Space Telescope B. Half-way to the Moon C. Below the ISS altitude D. 500-600 km, roughly the altitude of the Hubble Space Telescope

D. 500-600 km, roughly the altitude of the Hubble Space Telescope

16

88326631-7955-4fcd-8bb7-1a2c73fd5dd0

What is the typical lower boundary of the Van Allen belts?

1

[ "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope", "200-300 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon" ]

[ 0, 1, 0, 0 ]

What is the typical lower boundary of the Van Allen belts? A. Below the ISS altitude B. 500-600 km, roughly the altitude of the Hubble Space Telescope C. 200-300 km, roughly the altitude of the Hubble Space Telescope D. Half-way to the Moon

B. 500-600 km, roughly the altitude of the Hubble Space Telescope

16

88326631-7955-4fcd-8bb7-1a2c73fd5dd0

What is the typical lower boundary of the Van Allen belts?

2

[ "200-300 km, roughly the altitude of the Hubble Space Telescope", "Below the ISS altitude", "500-600 km, roughly the altitude of the Hubble Space Telescope", "Half-way to the Moon" ]

[ 0, 0, 1, 0 ]

What is the typical lower boundary of the Van Allen belts? A. 200-300 km, roughly the altitude of the Hubble Space Telescope B. Below the ISS altitude C. 500-600 km, roughly the altitude of the Hubble Space Telescope D. Half-way to the Moon

C. 500-600 km, roughly the altitude of the Hubble Space Telescope

17

e7426a1d-3e9f-4a96-bf76-e39df49b5458

What is the global shape of the Earth radiation belts?

0

[ "Spherical", "Triangular", "Toroidal", "Rectangular" ]

[ 0, 0, 1, 0 ]

What is the global shape of the Earth radiation belts? A. Spherical B. Triangular C. Toroidal D. Rectangular

C. Toroidal

17

e7426a1d-3e9f-4a96-bf76-e39df49b5458

What is the global shape of the Earth radiation belts?

1

[ "Spherical", "Rectangular", "Toroidal", "Triangular" ]

[ 0, 0, 1, 0 ]

What is the global shape of the Earth radiation belts? A. Spherical B. Rectangular C. Toroidal D. Triangular

C. Toroidal

17

e7426a1d-3e9f-4a96-bf76-e39df49b5458

What is the global shape of the Earth radiation belts?

2

[ "Toroidal", "Triangular", "Rectangular", "Spherical" ]

[ 1, 0, 0, 0 ]

What is the global shape of the Earth radiation belts? A. Toroidal B. Triangular C. Rectangular D. Spherical

A. Toroidal

18

6249156c-13d9-4ce4-9abf-46bf65e50b60

What is the sectional profile of the Earth radiation belts?

0

[ "Banana-shaped, with the extremities close to the surface of the Earth", "Rectangular", "Disk", "Banana-shaped, with the extremities away from the Earth" ]

[ 1, 0, 0, 0 ]

What is the sectional profile of the Earth radiation belts? A. Banana-shaped, with the extremities close to the surface of the Earth B. Rectangular C. Disk D. Banana-shaped, with the extremities away from the Earth

A. Banana-shaped, with the extremities close to the surface of the Earth

18

6249156c-13d9-4ce4-9abf-46bf65e50b60

What is the sectional profile of the Earth radiation belts?

1

[ "Banana-shaped, with the extremities away from the Earth", "Rectangular", "Disk", "Banana-shaped, with the extremities close to the surface of the Earth" ]

[ 0, 0, 0, 1 ]

What is the sectional profile of the Earth radiation belts? A. Banana-shaped, with the extremities away from the Earth B. Rectangular C. Disk D. Banana-shaped, with the extremities close to the surface of the Earth

D. Banana-shaped, with the extremities close to the surface of the Earth

18

6249156c-13d9-4ce4-9abf-46bf65e50b60

What is the sectional profile of the Earth radiation belts?

2

[ "Rectangular", "Banana-shaped, with the extremities away from the Earth", "Banana-shaped, with the extremities close to the surface of the Earth", "Disk" ]

[ 0, 0, 1, 0 ]

What is the sectional profile of the Earth radiation belts? A. Rectangular B. Banana-shaped, with the extremities away from the Earth C. Banana-shaped, with the extremities close to the surface of the Earth D. Disk

C. Banana-shaped, with the extremities close to the surface of the Earth

19

e61de4a5-23be-4d82-92d0-fea5117b41a1

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)

0

[ "Measure the Sun's flux in a spectral band called H-alpha", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Count the number of sun spots" ]

[ 0, 1, 0, 1 ]

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Measure the Sun's flux in a spectral band called H-alpha B. Measure the Sun's flux at a wavelength of 10.7 cm C. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) D. Count the number of sun spots

B. Measure the Sun's flux at a wavelength of 10.7 cm D. Count the number of sun spots

19

e61de4a5-23be-4d82-92d0-fea5117b41a1

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)

1

[ "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's flux in a spectral band called H-alpha", "Count the number of sun spots" ]

[ 0, 1, 0, 1 ]

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) B. Measure the Sun's flux at a wavelength of 10.7 cm C. Measure the Sun's flux in a spectral band called H-alpha D. Count the number of sun spots

B. Measure the Sun's flux at a wavelength of 10.7 cm D. Count the number of sun spots

19

e61de4a5-23be-4d82-92d0-fea5117b41a1

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply)

2

[ "Count the number of sun spots", "Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum)", "Measure the Sun's flux at a wavelength of 10.7 cm", "Measure the Sun's flux in a spectral band called H-alpha" ]

[ 1, 0, 1, 0 ]

The activity of the Sun has a periodicity of 11 years. What are the methods to observe it? (Select all that apply) A. Count the number of sun spots B. Measure the Sun's bolometric flux (i.e. the flux over the whole spectrum) C. Measure the Sun's flux at a wavelength of 10.7 cm D. Measure the Sun's flux in a spectral band called H-alpha

A. Count the number of sun spots C. Measure the Sun's flux at a wavelength of 10.7 cm

20

2f361e84-1b61-42b8-85e7-382e098b3512

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?

0

[ "Up to the distance from the Sun to Earth", "A siginificant fraction of the Sun's radius", "Up to the distance from the Sun to Mercury", "Up to the size of the Earth" ]

[ 0, 0, 0, 1 ]

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. Up to the distance from the Sun to Earth B. A siginificant fraction of the Sun's radius C. Up to the distance from the Sun to Mercury D. Up to the size of the Earth

D. Up to the size of the Earth

20

2f361e84-1b61-42b8-85e7-382e098b3512

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?

1

[ "A siginificant fraction of the Sun's radius", "Up to the distance from the Sun to Earth", "Up to the size of the Earth", "Up to the distance from the Sun to Mercury" ]

[ 0, 0, 1, 0 ]

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. A siginificant fraction of the Sun's radius B. Up to the distance from the Sun to Earth C. Up to the size of the Earth D. Up to the distance from the Sun to Mercury

C. Up to the size of the Earth

20

2f361e84-1b61-42b8-85e7-382e098b3512

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size?

2

[ "Up to the distance from the Sun to Mercury", "Up to the distance from the Sun to Earth", "Up to the size of the Earth", "A siginificant fraction of the Sun's radius" ]

[ 0, 0, 1, 0 ]

The solar prominence are bright features extending far into space. They can last from a few dozen hours to months. What can be their size? A. Up to the distance from the Sun to Mercury B. Up to the distance from the Sun to Earth C. Up to the size of the Earth D. A siginificant fraction of the Sun's radius

C. Up to the size of the Earth

21

04660f0a-19fc-4b41-82c2-9f4c2245bf07

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?

0

[ "The Sun darkens from the observer point of view", "None, it's too far away", "A gust of charged particles", "The flux of light from the Sun is lowered." ]

[ 0, 0, 1, 0 ]

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. The Sun darkens from the observer point of view B. None, it's too far away C. A gust of charged particles D. The flux of light from the Sun is lowered.

C. A gust of charged particles

21

04660f0a-19fc-4b41-82c2-9f4c2245bf07

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?

1

[ "None, it's too far away", "A gust of charged particles", "The flux of light from the Sun is lowered.", "The Sun darkens from the observer point of view" ]

[ 0, 1, 0, 0 ]

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. None, it's too far away B. A gust of charged particles C. The flux of light from the Sun is lowered. D. The Sun darkens from the observer point of view

B. A gust of charged particles

21

04660f0a-19fc-4b41-82c2-9f4c2245bf07

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun?

2

[ "None, it's too far away", "The flux of light from the Sun is lowered.", "A gust of charged particles", "The Sun darkens from the observer point of view" ]

[ 0, 0, 1, 0 ]

Coronal Mass Ejections (CMEs) are huge ejections of plasma from the Sun. What is their manifestation at a far distance (e.g. somewhere in the vicinity of Earth) from the Sun? A. None, it's too far away B. The flux of light from the Sun is lowered. C. A gust of charged particles D. The Sun darkens from the observer point of view

C. A gust of charged particles

22

a279f385-4896-4877-8c32-c265ae0f6b31

What is the magnetosphere?

0

[ "A region in Indonesia", "A spherical object composed solely of magnetic material", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles", "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object" ]

[ 0, 0, 1, 0 ]

What is the magnetosphere? A. A region in Indonesia B. A spherical object composed solely of magnetic material C. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles D. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object

C. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles

22

a279f385-4896-4877-8c32-c265ae0f6b31

What is the magnetosphere?

1

[ "A region in Indonesia", "A spherical object composed solely of magnetic material", "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles" ]

[ 0, 0, 0, 1 ]

What is the magnetosphere? A. A region in Indonesia B. A spherical object composed solely of magnetic material C. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object D. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles

D. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles

22

a279f385-4896-4877-8c32-c265ae0f6b31

What is the magnetosphere?

2

[ "A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object", "A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles", "A region in Indonesia", "A spherical object composed solely of magnetic material" ]

[ 0, 1, 0, 0 ]

What is the magnetosphere? A. A region that surrounds an object that has a magnetic field, which tunnels neutral particles away from the object B. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles C. A region in Indonesia D. A spherical object composed solely of magnetic material

B. A region that surrounds an object that has a magnetic field, usually a dipole which is distored by charged particles

23

dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?

0

[ "It descreases", "Impossible to say, we need more information to answer", "It stays the same", "It increases" ]

[ 0, 0, 0, 1 ]

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It descreases B. Impossible to say, we need more information to answer C. It stays the same D. It increases

D. It increases

23

dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?

1

[ "It increases", "Impossible to say, we need more information to answer", "It stays the same", "It descreases" ]

[ 1, 0, 0, 0 ]

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It increases B. Impossible to say, we need more information to answer C. It stays the same D. It descreases

A. It increases

23

dea1ba45-fcb4-454c-ab94-8a06a4d4f2f4

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change?

2

[ "It stays the same", "Impossible to say, we need more information to answer", "It increases", "It descreases" ]

[ 0, 0, 1, 0 ]

Some of the solar flux is reflected off the surface of the Earth. The fraction of sunlight reflected is given by the albedo. If the albedo increases, how will the amount of reflected light change? A. It stays the same B. Impossible to say, we need more information to answer C. It increases D. It descreases

C. It increases

24

8b9f71e4-c6db-45d7-8199-a83a58c31074

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?

0

[ "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.", "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance." ]

[ 0, 1, 0, 0 ]

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels. B. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.

B. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.

24

8b9f71e4-c6db-45d7-8199-a83a58c31074

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?

1

[ "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels." ]

[ 1, 0, 0, 0 ]

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent. B. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.

A. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.

24

8b9f71e4-c6db-45d7-8199-a83a58c31074

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why?

2

[ "The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels.", "The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance.", "The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible.", "The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent." ]

[ 0, 0, 0, 1 ]

Crossing the South Atlantic Anomaly (SAA) with a satellite can greatly restrict its performance. Why? A. The SAA is a region of permanent shadow over the South Atlantic, thus there is no power generated by the solar panels. B. The SAA is a region of extremely low radiation. This induces large currents in the onboard electronics which degrades the performance. C. The SAA is a region which is not covered by any array of antenna, which renders any communication between the ground and the satellite impossible. D. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.

D. The SAA is a region of extremely high radiation. Radiations create errors in the onboard electronics which can potentially be permanent.

25

274915a7-1ad4-49f5-979e-c38c3994eba4

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?

0

[ "Impossible to say", "Object Y", "Both at the same time", "Object X" ]

[ 1, 0, 0, 0 ]

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Impossible to say B. Object Y C. Both at the same time D. Object X

A. Impossible to say

25

274915a7-1ad4-49f5-979e-c38c3994eba4

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?

1

[ "Both at the same time", "Object X", "Impossible to say", "Object Y" ]

[ 0, 0, 1, 0 ]

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Both at the same time B. Object X C. Impossible to say D. Object Y

C. Impossible to say

25

274915a7-1ad4-49f5-979e-c38c3994eba4

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth?

2

[ "Both at the same time", "Object Y", "Object X", "Impossible to say" ]

[ 0, 0, 0, 1 ]

An object X and an object Y are in orbit (at the same altitude). X has a Drag Coefficient of 2 while Y has a drag Coefficient of 2.2. Which object will first fall back to Earth? A. Both at the same time B. Object Y C. Object X D. Impossible to say

D. Impossible to say

26

20566fe9-5314-4bb3-a0b7-4e9f01f8c396

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within

0

[ "25 years", "24 years", "42 years", "23 years" ]

[ 1, 0, 0, 0 ]

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 25 years B. 24 years C. 42 years D. 23 years

A. 25 years

26

20566fe9-5314-4bb3-a0b7-4e9f01f8c396

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within

1

[ "42 years", "23 years", "25 years", "24 years" ]

[ 0, 0, 1, 0 ]

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 42 years B. 23 years C. 25 years D. 24 years

C. 25 years

26

20566fe9-5314-4bb3-a0b7-4e9f01f8c396

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within

2

[ "25 years", "24 years", "23 years", "42 years" ]

[ 1, 0, 0, 0 ]

Space debris mitigation rule states that after end of nominal operations, a satellite has to fall back to Earth or to be put on a graveyard orbit within A. 25 years B. 24 years C. 23 years D. 42 years

A. 25 years

27

80824e85-50b6-4981-9056-5f91e3bd6326

Hubble's solar arrays were damaged because of collisions with:

0

[ "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteorites with a 10e-5 cm diameter", "Orbital debris", "Meteorites with a 10e-2 cm diameter", "Meteroites with a 10 cm diameter" ]

[ 0, 1, 1, 1, 0 ]

Hubble's solar arrays were damaged because of collisions with: A. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope B. Meteorites with a 10e-5 cm diameter C. Orbital debris D. Meteorites with a 10e-2 cm diameter E. Meteroites with a 10 cm diameter

B. Meteorites with a 10e-5 cm diameter C. Orbital debris D. Meteorites with a 10e-2 cm diameter

27

80824e85-50b6-4981-9056-5f91e3bd6326

Hubble's solar arrays were damaged because of collisions with:

1

[ "Orbital debris", "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteorites with a 10e-2 cm diameter", "Meteorites with a 10e-5 cm diameter", "Meteroites with a 10 cm diameter" ]

[ 1, 0, 1, 1, 0 ]

Hubble's solar arrays were damaged because of collisions with: A. Orbital debris B. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope C. Meteorites with a 10e-2 cm diameter D. Meteorites with a 10e-5 cm diameter E. Meteroites with a 10 cm diameter

A. Orbital debris C. Meteorites with a 10e-2 cm diameter D. Meteorites with a 10e-5 cm diameter

27

80824e85-50b6-4981-9056-5f91e3bd6326

Hubble's solar arrays were damaged because of collisions with:

2

[ "Meteorites with a 10e-2 cm diameter", "Meteorites with a 10e-5 cm diameter", "The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope", "Meteroites with a 10 cm diameter", "Orbital debris" ]

[ 1, 1, 0, 0, 1 ]

Hubble's solar arrays were damaged because of collisions with: A. Meteorites with a 10e-2 cm diameter B. Meteorites with a 10e-5 cm diameter C. The famous cosmos-irridium breakup that destroyed the primary mirror of the telescope D. Meteroites with a 10 cm diameter E. Orbital debris

A. Meteorites with a 10e-2 cm diameter B. Meteorites with a 10e-5 cm diameter E. Orbital debris

28

2772845a-52cb-4686-8cfe-b19647b0ad18

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?

0

[ "8.68 m/s^2", "1.72 m/s^2", "7.78 m/s^2", "0 m/s^2" ]

[ 1, 0, 0, 0 ]

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 8.68 m/s^2 B. 1.72 m/s^2 C. 7.78 m/s^2 D. 0 m/s^2

A. 8.68 m/s^2

28

2772845a-52cb-4686-8cfe-b19647b0ad18

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?

1

[ "1.72 m/s^2", "0 m/s^2", "8.68 m/s^2", "7.78 m/s^2" ]

[ 0, 0, 1, 0 ]

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 1.72 m/s^2 B. 0 m/s^2 C. 8.68 m/s^2 D. 7.78 m/s^2

C. 8.68 m/s^2

28

2772845a-52cb-4686-8cfe-b19647b0ad18

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee?

2

[ "7.78 m/s^2", "1.72 m/s^2", "0 m/s^2", "8.68 m/s^2" ]

[ 0, 0, 0, 1 ]

The International Space Station (ISS) is placed on an elliptical orbit around the Earth. The orbital apogee is 417 km and orbital perigee is 401 km. What is the gravitational acceleration created by the Earth at the orbit perigee? A. 7.78 m/s^2 B. 1.72 m/s^2 C. 0 m/s^2 D. 8.68 m/s^2

D. 8.68 m/s^2

29

90c76998-7060-491c-a0fb-3ae580a72a22

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)

0

[ "Approximately 4", "Approximately 2", "Approximately 3", "Approximately 1", "Approximately 5" ]

[ 0, 1, 0, 0, 0 ]

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 4 B. Approximately 2 C. Approximately 3 D. Approximately 1 E. Approximately 5

B. Approximately 2

29

90c76998-7060-491c-a0fb-3ae580a72a22

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)

1

[ "Approximately 1", "Approximately 3", "Approximately 2", "Approximately 4", "Approximately 5" ]

[ 0, 0, 1, 0, 0 ]

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 1 B. Approximately 3 C. Approximately 2 D. Approximately 4 E. Approximately 5

C. Approximately 2

29

90c76998-7060-491c-a0fb-3ae580a72a22

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s)

2

[ "Approximately 1", "Approximately 2", "Approximately 5", "Approximately 4", "Approximately 3" ]

[ 0, 1, 0, 0, 0 ]

What is the escape velocity from the surface of the moon Europa (mass M = 4.8e22 kg, radius 1560 km)? (answer in km/s) A. Approximately 1 B. Approximately 2 C. Approximately 5 D. Approximately 4 E. Approximately 3

B. Approximately 2

30

6df3d9f1-800e-4b7d-b9ca-ce2ef8090718

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?

0

[ "5.4", "3.6", "1.4", "2.7", "0.2" ]

[ 1, 0, 0, 0, 0 ]

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 5.4 B. 3.6 C. 1.4 D. 2.7 E. 0.2

A. 5.4

30

6df3d9f1-800e-4b7d-b9ca-ce2ef8090718

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?

1

[ "3.6", "5.4", "2.7", "1.4", "0.2" ]

[ 0, 1, 0, 0, 0 ]

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 3.6 B. 5.4 C. 2.7 D. 1.4 E. 0.2

B. 5.4

30

6df3d9f1-800e-4b7d-b9ca-ce2ef8090718

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s?

2

[ "0.2", "2.7", "3.6", "5.4", "1.4" ]

[ 0, 0, 0, 1, 0 ]

The escape velocity out of the solar system from Jupiter's orbit is 18.5 km/s while the average orbital velocity is 13.1 km/s. What is the transfer velocity in km/s? A. 0.2 B. 2.7 C. 3.6 D. 5.4 E. 1.4

D. 5.4

31

dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?

0

[ "You, by jumping the equivalent of 50 cm on Earth.", "A bullet shot by a pistol.", "None of the above.", "A tennis ball hit by Roger Federer." ]

[ 1, 1, 0, 1 ]

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. You, by jumping the equivalent of 50 cm on Earth. B. A bullet shot by a pistol. C. None of the above. D. A tennis ball hit by Roger Federer.

A. You, by jumping the equivalent of 50 cm on Earth. B. A bullet shot by a pistol. D. A tennis ball hit by Roger Federer.

31

dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?

1

[ "A tennis ball hit by Roger Federer.", "You, by jumping the equivalent of 50 cm on Earth.", "None of the above.", "A bullet shot by a pistol." ]

[ 1, 1, 0, 1 ]

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. A tennis ball hit by Roger Federer. B. You, by jumping the equivalent of 50 cm on Earth. C. None of the above. D. A bullet shot by a pistol.

A. A tennis ball hit by Roger Federer. B. You, by jumping the equivalent of 50 cm on Earth. D. A bullet shot by a pistol.

31

dcd48a6f-2c96-42e6-b75e-b5cb28b2c1fa

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ?

2

[ "None of the above.", "You, by jumping the equivalent of 50 cm on Earth.", "A tennis ball hit by Roger Federer.", "A bullet shot by a pistol." ]

[ 0, 1, 1, 1 ]

The comet 67P/Churyumov-Gerasimenko has an escape velocity close to 1 m/s. What would be sufficient in the following to escape its surface and never come back ? A. None of the above. B. You, by jumping the equivalent of 50 cm on Earth. C. A tennis ball hit by Roger Federer. D. A bullet shot by a pistol.

B. You, by jumping the equivalent of 50 cm on Earth. C. A tennis ball hit by Roger Federer. D. A bullet shot by a pistol.

32

6570bf60-a707-4f9b-ad31-d7bf390a306f

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?

0

[ "The lander's chances are fair, but there is a significant risk.", "All is good, not to worry, Philae will come down for sure.", "For sure, the lander is lost." ]

[ 1, 0, 0 ]

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. The lander's chances are fair, but there is a significant risk. B. All is good, not to worry, Philae will come down for sure. C. For sure, the lander is lost.

A. The lander's chances are fair, but there is a significant risk.

32

6570bf60-a707-4f9b-ad31-d7bf390a306f

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?

1

[ "For sure, the lander is lost.", "All is good, not to worry, Philae will come down for sure.", "The lander's chances are fair, but there is a significant risk." ]

[ 0, 0, 1 ]

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. For sure, the lander is lost. B. All is good, not to worry, Philae will come down for sure. C. The lander's chances are fair, but there is a significant risk.

C. The lander's chances are fair, but there is a significant risk.

32

6570bf60-a707-4f9b-ad31-d7bf390a306f

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point?

2

[ "The lander's chances are fair, but there is a significant risk.", "For sure, the lander is lost.", "All is good, not to worry, Philae will come down for sure." ]

[ 1, 0, 0 ]

The Rosetta spacecraft launched by the European Space Agency successfully entered the orbit of the comet 67P/Churyumov-Gerasimenko in August 2014. November 12 2014, the Philae lander was released and touched down 7 hours later at a speed of 0.98m/s. The harpoon mechanism which was supposed to secure the lander failed and it bounced off the comet. Assuming purely elastic impact, will the lander leave the comet or return at some point? A. The lander's chances are fair, but there is a significant risk. B. For sure, the lander is lost. C. All is good, not to worry, Philae will come down for sure.

A. The lander's chances are fair, but there is a significant risk.

33

cfaa1256-9ed3-460b-b6d4-2a79e2b335f2

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)

0

[ "5.6", "5.0", "4.7", "5.3", "5.9" ]

[ 0, 0, 1, 0, 0 ]

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.6 B. 5.0 C. 4.7 D. 5.3 E. 5.9

C. 4.7

33

cfaa1256-9ed3-460b-b6d4-2a79e2b335f2

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)

1

[ "5.0", "4.7", "5.3", "5.6", "5.9" ]

[ 0, 1, 0, 0, 0 ]

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.0 B. 4.7 C. 5.3 D. 5.6 E. 5.9

B. 4.7

33

cfaa1256-9ed3-460b-b6d4-2a79e2b335f2

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s)

2

[ "5.6", "5.9", "5.0", "5.3", "4.7" ]

[ 0, 0, 0, 0, 1 ]

Telecommunications satellites are often on geostationary orbits (GEO) at an altitude of 35786 km above the surface of the Earth. What is the Earth escape velocity from that orbit? (answer in km/s) A. 5.6 B. 5.9 C. 5.0 D. 5.3 E. 4.7

E. 4.7

34

bef97b27-a677-488c-9088-b835c0f3d1a8

Which formula gives the work to be performed in order to bring a unit mass from the Earth's surface to infinity? Assume that g0 is the standard gravitational acceleration for the surface of the Earth, R is the radius of the Earth, and p the atmospheric pressure.

0

[ "g0 * R * p", "g0 * R", "g0 * R^2", "g0 * R * p^2" ]

[ 0, 1, 0, 0 ]

Which formula gives the work to be performed in order to bring a unit mass from the Earth's surface to infinity? Assume that g0 is the standard gravitational acceleration for the surface of the Earth, R is the radius of the Earth, and p the atmospheric pressure. A. g0 * R * p B. g0 * R C. g0 * R^2 D. g0 * R * p^2

B. g0 * R