Astronomy college course/Unit 2 study guide

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AstroTest2_Study[edit]

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This document contains either a study guide OR pairs of exams taken from the same exam bank
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AstroTest2_Study-v1s1[edit]

1. At 9am a new moon would be}

___ a) overhead
___ b) eastern horizon
___ c) high in western sky
___ d) below the western horizon
___ e) high in eastern sky


2. At noon a waning gibbous moon would be}

___ a) below the western horizon
___ b) high in western sky
___ c) western horizon
___ d) nadir
___ e) overhead


3. At 6pm a waxing crescent moon would be}

___ a) high in western sky
___ b) overhead
___ c) western horizon
___ d) nadir
___ e) eastern horizon


4. At 6pm a waning crescent moon would be}

___ a) western horizon
___ b) nadir
___ c) below the eastern horizon
___ d) below the western horizon
___ e) eastern horizon


5. At midnight a waning gibbous moon would be}

___ a) high in eastern sky
___ b) high in western sky
___ c) below the western horizon
___ d) eastern horizon
___ e) western horizon


6. At 3pm a full moon would be}

___ a) western horizon
___ b) high in eastern sky
___ c) nadir
___ d) below the eastern horizon
___ e) below the western horizon


7. At 6pm a waxing gibbous moon would be}

___ a) high in eastern sky
___ b) nadir
___ c) western horizon
___ d) below the western horizon
___ e) eastern horizon


8. At 9am a waxing crescent moon would be}

___ a) overhead
___ b) nadir
___ c) eastern horizon
___ d) below the western horizon
___ e) high in eastern sky


9. At 9pm a full moon would be}

___ a) eastern horizon
___ b) high in eastern sky
___ c) below the western horizon
___ d) nadir
___ e) overhead


10. At 9pm a third quarter moon would be}

___ a) below the western horizon
___ b) high in western sky
___ c) high in eastern sky
___ d) nadir
___ e) below the eastern horizon


11. ____ motion is in the usual direction, and _______ is motion that has temporarily reversed itself.

___ a) indirect; direct
___ b) retrograde; direct
___ c) direct; elliptical
___ d) direct; retrograde
___ e) elliptical; retrograde


12. Under what conditions would a planet not seem to rise in the east and set in the west?

___ a) if the planet is in elliptical motion
___ b) if the observer is near the north or south poles
___ c) if the planet is in retrograde motion
___ d) if the planet is in direct motion
___ e) if the observer is below the equator


13. When the faster moving Earth overtakes a slower planet outside Earth's orbit

___ a) tidal forces can be observed on Earth
___ b) two of these are true
___ c) all of these are true
___ d) tidal forces can be observed on the planet
___ e) retrograde motion occurs


14. Which planet spends more days in a given retrograde?

___ a) Mars
___ b) It depends on the season
___ c) Saturn
___ d) They are all equal
___ e) Earth


15. Which planet has more days between two consecutive retrogrades?

___ a) It depends on the season
___ b) They are all equal
___ c) Earth
___ d) Mars
___ e) Saturn


16. A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

___ a) 6
___ b) 3
___ c) 1
___ d) 24
___ e) 12


17. If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?

___ a) 1
___ b) 24
___ c) 3
___ d) 6
___ e) 12


18. Planet comes from the Greek word for 'wanderer'.

___ a) true
___ b) false


19. We know that Galileo saw Neptune, but is not credited with its discovery because

___ a) it was too faint to be worth drawing
___ b) none of these are true
___ c) he never published his drawing
___ d) it was in a transition between retrograde and direct motion
___ e) he thought it was a moon of Saturn


20. Kepler began his career as a teacher of

___ a) astronomy
___ b) philosophy
___ c) mathematics
___ d) history
___ e) theology


21. Kepler is also known for his improvements to

___ a) the telescope
___ b) a perpetual motion machine
___ c) Ptolemy's star charts
___ d) the abacus
___ e) translations of the Bible


22. In Kepler's era, astronomy was usually considered a part of natural philosophy

___ a) true
___ b) false


23. In Kepler's era, astronomy was usually considered a part of mathematics

___ a) true
___ b) false


24. In Kepler's era, astronomy closely linked to astrology

___ a) true
___ b) false


25. In Kepler's era, physics (how and why things moved) was usually considered a part of natural philosophy

___ a) true
___ b) false


26. Kepler incorporated religious arguments and reasoning into his work

___ a) true
___ b) false


27. Kepler avoided religious arguments and reasoning in his work

___ a) true
___ b) false


28. How would one describe the status of Kepler's family when he was a child?

___ a) of noble birth, but in poverty
___ b) wealth and of noble birth
___ c) wealthy but not of noble birth
___ d) his father and grandfather were scientists
___ e) neither wealthy nor of noble birth


29. As a child, Kepler's interest in astronomy grew as a result of

___ a) a comet
___ b) a lunar eclipse
___ c) two of these
___ d) a solar eclipse
___ e) watching his uncle make a telescope


30. When Kepler's studies at the university were over, what he really wanted to do was

___ a) become a minister
___ b) visit Rome
___ c) work with Tycho
___ d) work with Newton
___ e) visit Athens


31. Which of the following is NOT associated with Kepler's Laws

___ a) planets farther from the Sun have longer orbital periods.
___ b) elliptical paths for the planets
___ c) circular motions with epicycles
___ d) planets speed up as they approach the sun
___ e) Earth orbits the sun


32. As a planet orbits the Sun, the Sun is situated at one focal point of the ellipse

___ a) true
___ b) false


33. As a planet orbits the Sun, the Sun is situated midway between the two focal points of the ellipse

___ a) true
___ b) false


34. Newton was able to use the motion of the Moon to calculate the universal constant of gravity, G

___ a) true
___ b) false


35. The force of (gravitational) attraction between you and a friend is small because neither of you possess significant mass

___ a) true
___ b) false


36. Cavendish finally measured G by carefully weighing the force between

___ a) two lead balls
___ b) Jupiter and moons
___ c) Earth and Sun
___ d) Sun and Moon
___ e) Earth and Moon


37.
horizontal crack
The horizontal crack along the center of figure is a
___ a) antipodal
___ b) propodal
___ c) meander
___ d) scarp
___ e) rille


38. Antipodal to Caloris Basin is

___ a) a silicon deposits
___ b) a water deposits
___ c) an iron/nickel deposit
___ d) a scarp
___ e) weird terrain


39. A volatile is a substance that

___ a) melts or evaporates at high temperature
___ b) reacts violently with water
___ c) reacts violently with acids
___ d) melts or evaporates at low temperature
___ e) reacts violently with oxygen


40. The four smaller inner planets, Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of ___ and ___.

___ a) carbon and oxygen
___ b) ice and gas
___ c) ice and rock
___ d) ice and water
___ e) metal and rock


41. If the universe is mostly hydrogen, why aren't terrestrial planets made of mostly hydrogen?

___ a) thermonuclear fusion in the protosun turned the hydrogen into helium
___ b) tidal forces from the Sun prevented accretion
___ c) tidal forces from Jupiter prevented accretion
___ d) These planets lie inside the frost line for hydrogen
___ e) tidal forces between the terrestrial planets prevented accretion


42. Mercury's atmosphere consists mostly of

___ a) carbon dioxide
___ b) nitrogen
___ c) oxygen
___ d) helium
___ e) hydrogen


43. In what sequence did Mercury's weird terrain and Caloris basin form?

___ a) The were formed at exactly the same time
___ b) The weird terrain was formed almost immediately after the Caloris basin
___ c) The weird terrain was formed approximately 2 billions years before the Caloris basin
___ d) The weird terrain was formed approximately 2 billions years after the Caloris basin
___ e) The weird terrain was formed a few millions years after the Caloris basin


44. Very far from the sun, the heliosphere

___ a) becomes the magnetosphere
___ b) becomes weaker than the interstellar wind
___ c) spins in the opposite direction
___ d) reverses direction
___ e) never ends


45. A volatile is a substance that

___ a) reacts violently with oxygen
___ b) reacts violently with water
___ c) reacts violently with acids
___ d) melts or evaporates at low temperature
___ e) melts or evaporates at high temperature


46. All planets lie within a nearly flat disc called the __________ plane

___ a) fissile
___ b) retrograde
___ c) ecliptic
___ d) interstellar
___ e) angular


47. The AU is

___ a) a measure of the brightness of a planet
___ b) the distance from the Sun to Earth
___ c) the distance from Earth to the Moon
___ d) the size of Oort's cloud
___ e) the most distant Kuiper object from the Sun


48. The Sun and Earth are about

___ a) 50 billion years old
___ b) 50 million years old
___ c) 500 million years old
___ d) 5 million years old
___ e) 5 billion years old


49. The universe is about

___ a) 1.5 billion years old
___ b) 15 billion years old
___ c) 15 million years old
___ d) 150 million years old
___ e) 150 billion years old


50. Roughly how much bigger is a gas planet than a terrestrial planet?

___ a) 3
___ b) 30
___ c) 300
___ d) 10
___ e) 100


51. Roughly how much bigger is a the Sun than a gas planet?

___ a) 30
___ b) 3
___ c) 10
___ d) 300
___ e) 100


52. According to Wikipedia, if all the mass of the asteroid belt were combined to one object, it's mass would _______ times less than Earth's mass.

___ a) 100
___ b) 1
___ c) 10
___ d) 10,000
___ e) 1,000


53.
planetary disk
In this hypothetical image of a sun-like star we see a bright band of dust that we on Earth call zodiacal light. It is due to sunlight reflecting off dust in the
___ a) Van Allen belt
___ b) Kuiper belt
___ c) ecliptic plane
___ d) magnetic sun's magnetic field
___ e) Oort Cloude


54. In planetary science, the frost line refers to a distance away from

___ a) the star in the middle
___ b) the south pole of a planet
___ c) ecliptic plane
___ d) either pole of a planet
___ e) the north pole of a planet


55. Oort's cloud was hypothesized to explain the source of

___ a) asteroids
___ b) comets
___ c) water inside the frost line
___ d) planets
___ e) water outside the frost line


56. According to Wikipedia _______ and ______ are referred to as volatiles.

___ a) electrons and protons
___ b) ices and gasses
___ c) asteroids and terrestrial planets
___ d) planets and moons
___ e) acids and bases


57. Which of the following list is properly ranked, starting with objects closest to the Sun?

___ a) Oort's cloud, Asteroid belt, Kuiper belt
___ b) Asteroid belt, Oort's cloud, Kuiper belt
___ c) Kuiper belt, Oort's cloud, Asteroid belt
___ d) Asteroid belt, Kuiper belt, Oort's cloud
___ e) Kuiper belt, Asteroid belt, Oort's cloud


58. When the sun turns into a red giant,

___ a) surface temperature increases; energy output decreases
___ b) The sun will not turn into a red giant
___ c) surface temperature decreases; energy output increases
___ d) surface temperature increases; energy output increases
___ e) surface temperature decreases; energy output decreases


59. In astrophysics, what is accretion?

___ a) the growth of a comet's tail as it comes close to the Sun
___ b) the growth of a massive object by gravitationally attracting more matter
___ c) the increase in temperature and pressure of a star as it collapses from its own gravity
___ d) the condensation of volatiles as a gas cools
___ e) the growth in size of a massive star as its outer atmosphere expands


60. Dwarf planets are defined as objects orbiting the Sun and smaller than planets, that?

___ a) lie in the asteroid belt
___ b) have been rounded by their own gravity
___ c) are too far from the Sun to be planets
___ d) possess an atmosphere
___ e) lack an atmosphere


61. Dwarf planets have no natural satellites,

___ a) true
___ b) false


62. Pluto is classified as

___ a) a natural satellite of Uranus
___ b) a natural satellite of Neptune
___ c) a dwarf planet with no natural satellites
___ d) a dwarf planet and a trans-Neptunian object.
___ e) an asteroid belt object


63. How many of the outer planets have rings?

___ a) 4
___ b) 2
___ c) 3
___ d) 1


64. Currently there are 7 billion people on Earth, if that ever increases to 10 billion people, for every person on Earth there will be ____ stars in the Milky Way galaxy.

___ a) 2
___ b) 20
___ c) 2000
___ d) 200


65. The revolution of Haley's comet around the Sun is nearly circular.

___ a) true
___ b) false


66. The revolution of Haley's comet around the Sun is opposite that of the 8 planets.

___ a) true
___ b) false


67. The frost line is situated approximately

___ a) 5 times as far from the Sun as the Earth is from the Sun
___ b) 10 times as far from the Earth as the Earth's surface is from its center
___ c) 5 times as far from the Earth as the Earth's surface is from its center
___ d) 10 times as far from the Sun as the Earth is from the Sun


Key to AstroTest2_Study-v1s1[edit]

1. At 9am a new moon would be}

- a) overhead
- b) eastern horizon
- c) high in western sky
- d) below the western horizon
+ e) high in eastern sky


2. At noon a waning gibbous moon would be}

+ a) below the western horizon
- b) high in western sky
- c) western horizon
- d) nadir
- e) overhead


3. At 6pm a waxing crescent moon would be}

+ a) high in western sky
- b) overhead
- c) western horizon
- d) nadir
- e) eastern horizon


4. At 6pm a waning crescent moon would be}

- a) western horizon
- b) nadir
- c) below the eastern horizon
+ d) below the western horizon
- e) eastern horizon


5. At midnight a waning gibbous moon would be}

+ a) high in eastern sky
- b) high in western sky
- c) below the western horizon
- d) eastern horizon
- e) western horizon


6. At 3pm a full moon would be}

- a) western horizon
- b) high in eastern sky
- c) nadir
+ d) below the eastern horizon
- e) below the western horizon


7. At 6pm a waxing gibbous moon would be}

+ a) high in eastern sky
- b) nadir
- c) western horizon
- d) below the western horizon
- e) eastern horizon


8. At 9am a waxing crescent moon would be}

- a) overhead
- b) nadir
+ c) eastern horizon
- d) below the western horizon
- e) high in eastern sky


9. At 9pm a full moon would be}

- a) eastern horizon
+ b) high in eastern sky
- c) below the western horizon
- d) nadir
- e) overhead


10. At 9pm a third quarter moon would be}

- a) below the western horizon
- b) high in western sky
- c) high in eastern sky
- d) nadir
+ e) below the eastern horizon


11. ____ motion is in the usual direction, and _______ is motion that has temporarily reversed itself.

- a) indirect; direct
- b) retrograde; direct
- c) direct; elliptical
+ d) direct; retrograde
- e) elliptical; retrograde


12. Under what conditions would a planet not seem to rise in the east and set in the west?

- a) if the planet is in elliptical motion
+ b) if the observer is near the north or south poles
- c) if the planet is in retrograde motion
- d) if the planet is in direct motion
- e) if the observer is below the equator


13. When the faster moving Earth overtakes a slower planet outside Earth's orbit

- a) tidal forces can be observed on Earth
- b) two of these are true
- c) all of these are true
- d) tidal forces can be observed on the planet
+ e) retrograde motion occurs


14. Which planet spends more days in a given retrograde?

- a) Mars
- b) It depends on the season
+ c) Saturn
- d) They are all equal
- e) Earth


15. Which planet has more days between two consecutive retrogrades?

- a) It depends on the season
- b) They are all equal
- c) Earth
+ d) Mars
- e) Saturn


16. A planet that is very, very far from the Sun would be in retrograde for approximately ___ months.

+ a) 6
- b) 3
- c) 1
- d) 24
- e) 12


17. If a planet that is very, very far from the Sun begins a retrograde, how many months must pass before it begins the next retrograde?

- a) 1
- b) 24
- c) 3
- d) 6
+ e) 12


18. Planet comes from the Greek word for 'wanderer'.

+ a) true
- b) false


19. We know that Galileo saw Neptune, but is not credited with its discovery because

- a) it was too faint to be worth drawing
- b) none of these are true
- c) he never published his drawing
+ d) it was in a transition between retrograde and direct motion
- e) he thought it was a moon of Saturn


20. Kepler began his career as a teacher of

- a) astronomy
- b) philosophy
+ c) mathematics
- d) history
- e) theology


21. Kepler is also known for his improvements to

+ a) the telescope
- b) a perpetual motion machine
- c) Ptolemy's star charts
- d) the abacus
- e) translations of the Bible


22. In Kepler's era, astronomy was usually considered a part of natural philosophy

- a) true
+ b) false


23. In Kepler's era, astronomy was usually considered a part of mathematics

+ a) true
- b) false


24. In Kepler's era, astronomy closely linked to astrology

+ a) true
- b) false


25. In Kepler's era, physics (how and why things moved) was usually considered a part of natural philosophy

+ a) true
- b) false


26. Kepler incorporated religious arguments and reasoning into his work

+ a) true
- b) false


27. Kepler avoided religious arguments and reasoning in his work

- a) true
+ b) false


28. How would one describe the status of Kepler's family when he was a child?

+ a) of noble birth, but in poverty
- b) wealth and of noble birth
- c) wealthy but not of noble birth
- d) his father and grandfather were scientists
- e) neither wealthy nor of noble birth


29. As a child, Kepler's interest in astronomy grew as a result of

- a) a comet
- b) a lunar eclipse
+ c) two of these
- d) a solar eclipse
- e) watching his uncle make a telescope


30. When Kepler's studies at the university were over, what he really wanted to do was

+ a) become a minister
- b) visit Rome
- c) work with Tycho
- d) work with Newton
- e) visit Athens


31. Which of the following is NOT associated with Kepler's Laws

- a) planets farther from the Sun have longer orbital periods.
- b) elliptical paths for the planets
+ c) circular motions with epicycles
- d) planets speed up as they approach the sun
- e) Earth orbits the sun


32. As a planet orbits the Sun, the Sun is situated at one focal point of the ellipse

+ a) true
- b) false


33. As a planet orbits the Sun, the Sun is situated midway between the two focal points of the ellipse

- a) true
+ b) false


34. Newton was able to use the motion of the Moon to calculate the universal constant of gravity, G

- a) true
+ b) false


35. The force of (gravitational) attraction between you and a friend is small because neither of you possess significant mass

+ a) true
- b) false


36. Cavendish finally measured G by carefully weighing the force between

+ a) two lead balls
- b) Jupiter and moons
- c) Earth and Sun
- d) Sun and Moon
- e) Earth and Moon


37.
horizontal crack
The horizontal crack along the center of figure is a
- a) antipodal
- b) propodal
- c) meander
+ d) scarp
- e) rille


38. Antipodal to Caloris Basin is

- a) a silicon deposits
- b) a water deposits
- c) an iron/nickel deposit
- d) a scarp
+ e) weird terrain


39. A volatile is a substance that

- a) melts or evaporates at high temperature
- b) reacts violently with water
- c) reacts violently with acids
+ d) melts or evaporates at low temperature
- e) reacts violently with oxygen


40. The four smaller inner planets, Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of ___ and ___.

- a) carbon and oxygen
- b) ice and gas
- c) ice and rock
- d) ice and water
+ e) metal and rock


41. If the universe is mostly hydrogen, why aren't terrestrial planets made of mostly hydrogen?

+ a) thermonuclear fusion in the protosun turned the hydrogen into helium
- b) tidal forces from the Sun prevented accretion
- c) tidal forces from Jupiter prevented accretion
- d) These planets lie inside the frost line for hydrogen
- e) tidal forces between the terrestrial planets prevented accretion


42. Mercury's atmosphere consists mostly of

- a) carbon dioxide
- b) nitrogen
- c) oxygen
- d) helium
+ e) hydrogen


43. In what sequence did Mercury's weird terrain and Caloris basin form?

- a) The were formed at exactly the same time
+ b) The weird terrain was formed almost immediately after the Caloris basin
- c) The weird terrain was formed approximately 2 billions years before the Caloris basin
- d) The weird terrain was formed approximately 2 billions years after the Caloris basin
- e) The weird terrain was formed a few millions years after the Caloris basin


44. Very far from the sun, the heliosphere

- a) becomes the magnetosphere
+ b) becomes weaker than the interstellar wind
- c) spins in the opposite direction
- d) reverses direction
- e) never ends


45. A volatile is a substance that

- a) reacts violently with oxygen
- b) reacts violently with water
- c) reacts violently with acids
+ d) melts or evaporates at low temperature
- e) melts or evaporates at high temperature


46. All planets lie within a nearly flat disc called the __________ plane

- a) fissile
- b) retrograde
+ c) ecliptic
- d) interstellar
- e) angular


47. The AU is

- a) a measure of the brightness of a planet
+ b) the distance from the Sun to Earth
- c) the distance from Earth to the Moon
- d) the size of Oort's cloud
- e) the most distant Kuiper object from the Sun


48. The Sun and Earth are about

- a) 50 billion years old
- b) 50 million years old
- c) 500 million years old
- d) 5 million years old
+ e) 5 billion years old


49. The universe is about

- a) 1.5 billion years old
+ b) 15 billion years old
- c) 15 million years old
- d) 150 million years old
- e) 150 billion years old


50. Roughly how much bigger is a gas planet than a terrestrial planet?

- a) 3
- b) 30
- c) 300
+ d) 10
- e) 100


51. Roughly how much bigger is a the Sun than a gas planet?

- a) 30
- b) 3
+ c) 10
- d) 300
- e) 100


52. According to Wikipedia, if all the mass of the asteroid belt were combined to one object, it's mass would _______ times less than Earth's mass.

- a) 100
- b) 1
- c) 10
- d) 10,000
+ e) 1,000


53.
planetary disk
In this hypothetical image of a sun-like star we see a bright band of dust that we on Earth call zodiacal light. It is due to sunlight reflecting off dust in the
- a) Van Allen belt
- b) Kuiper belt
+ c) ecliptic plane
- d) magnetic sun's magnetic field
- e) Oort Cloude


54. In planetary science, the frost line refers to a distance away from

+ a) the star in the middle
- b) the south pole of a planet
- c) ecliptic plane
- d) either pole of a planet
- e) the north pole of a planet


55. Oort's cloud was hypothesized to explain the source of

- a) asteroids
+ b) comets
- c) water inside the frost line
- d) planets
- e) water outside the frost line


56. According to Wikipedia _______ and ______ are referred to as volatiles.

- a) electrons and protons
+ b) ices and gasses
- c) asteroids and terrestrial planets
- d) planets and moons
- e) acids and bases


57. Which of the following list is properly ranked, starting with objects closest to the Sun?

- a) Oort's cloud, Asteroid belt, Kuiper belt
- b) Asteroid belt, Oort's cloud, Kuiper belt
- c) Kuiper belt, Oort's cloud, Asteroid belt
+ d) Asteroid belt, Kuiper belt, Oort's cloud
- e) Kuiper belt, Asteroid belt, Oort's cloud


58. When the sun turns into a red giant,

- a) surface temperature increases; energy output decreases
- b) The sun will not turn into a red giant
+ c) surface temperature decreases; energy output increases
- d) surface temperature increases; energy output increases
- e) surface temperature decreases; energy output decreases


59. In astrophysics, what is accretion?

- a) the growth of a comet's tail as it comes close to the Sun
+ b) the growth of a massive object by gravitationally attracting more matter
- c) the increase in temperature and pressure of a star as it collapses from its own gravity
- d) the condensation of volatiles as a gas cools
- e) the growth in size of a massive star as its outer atmosphere expands


60. Dwarf planets are defined as objects orbiting the Sun and smaller than planets, that?

- a) lie in the asteroid belt
+ b) have been rounded by their own gravity
- c) are too far from the Sun to be planets
- d) possess an atmosphere
- e) lack an atmosphere


61. Dwarf planets have no natural satellites,

- a) true
+ b) false


62. Pluto is classified as

- a) a natural satellite of Uranus
- b) a natural satellite of Neptune
- c) a dwarf planet with no natural satellites
+ d) a dwarf planet and a trans-Neptunian object.
- e) an asteroid belt object


63. How many of the outer planets have rings?

+ a) 4
- b) 2
- c) 3
- d) 1


64. Currently there are 7 billion people on Earth, if that ever increases to 10 billion people, for every person on Earth there will be ____ stars in the Milky Way galaxy.

- a) 2
+ b) 20
- c) 2000
- d) 200


65. The revolution of Haley's comet around the Sun is nearly circular.

- a) true
+ b) false


66. The revolution of Haley's comet around the Sun is opposite that of the 8 planets.

+ a) true
- b) false


67. The frost line is situated approximately

+ a) 5 times as far from the Sun as the Earth is from the Sun
- b) 10 times as far from the Earth as the Earth's surface is from its center
- c) 5 times as far from the Earth as the Earth's surface is from its center
- d) 10 times as far from the Sun as the Earth is from the Sun


Attribution (for quiz questions) under CC-by-SA license
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Lunar_Phases/Quiz(advanced)&oldid=1284517
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Apparent_regrograde_motion/Quiz01&oldid=1284510
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Kepler/Quiz01&oldid=1284523
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Mercury/questions&oldid=1388427
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Solar_system/Quiz&oldid=1388382
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Solar_system/Quiz_2&oldid=1298068
Study guide
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Lunar_Phases&oldid=1190185
http://en.wikipedia.org/w/index.php?title=User:Guy_vandegrift/Astronomy_college_course/Apparent_retrograde_motion&oldid=615635101
http://en.wikipedia.org/w/index.php?title=User:Guy_vandegrift/Astronomy_college_course/Kepler&oldid=615571371
http://en.wikiversity.org/w/index.php?title=Astronomy_college_course/Mercury&oldid=1381954
http://en.wikipedia.org/w/index.php?title=Solar_System&oldid=589452802