1. Earth’s Moon
Review

3. The distance between the Earth and the Moon
Remains constant as the Moon orbits about the Earth.
B. Varies as the Moon orbits about the Earth.

4. The distance between the Earth and the Moon 
A. Remains constant as the Moon orbits about the Earth.
B. Varies as the Moon orbits about the Earth.

5. Basalt, a dense congealed lava rock rich in iron, is the primary material in the Moon's A. Highlands. B. Crust. C. Maria. D. Far side's regolith

6. Basalt, a dense congealed lava rock rich in iron, is the primary material in the Moon's A. Highlands. B. Crust. C. Maria. D. Far side's regolith

7. Based on a comparison between the amount of cratering seen in the highlands versus the maria, it is possible to conclude that the main bombardment of the Moon occurred A. Very recently. B. About a million years ago. C. About a billion years ago. D. Shortly after the Moon formed a few billion years ago. E. All throughout the history of the Moon.

8. Based on a comparison between the amount of cratering seen in the highlands versus the maria, it is possible to conclude that the main bombardment of the Moon occurred A. Very recently. B. About a million years ago. C. About a billion years ago. D. Shortly after the Moon formed a few billion years ago. E. All throughout the history of the Moon.

9. Which statement about the Moon's orbit is true. A
Which statement about the Moon's orbit is true? A. The Moon is in synchronous rotation as it orbits the Earth. B. The Moon is in a geosynchronous orbit around the Earth. C. The Moon's orbit is aligned with the Earth's orbit. D. The Moon rotates in the opposite direction than it orbits the Earth.

10. Which statement about the Moon's orbit is true. A
Which statement about the Moon's orbit is true? A. The Moon is in synchronous rotation as it orbits the Earth. B. The Moon is in a geosynchronous orbit around the Earth. C. The Moon's orbit is aligned with the Earth's orbit. D. The Moon rotates in the opposite direction than it orbits the Earth.

11. How many times does the Moon rotate on its axis in one orbital period
How many times does the Moon rotate on its axis in one orbital period? A. Only once. B. Twice. C. Several times. D. The Moon does not rotate.

12. How many times does the Moon rotate on its axis in one orbital period
How many times does the Moon rotate on its axis in one orbital period? A. Only once. B. Twice. C. Several times. D. The Moon does not rotate.

13. From the observation that the same side of the Moon always faces the Earth, one can conclude that A. The Moon does not rotate. B. The Moon completes one rotation every day. C. The Moon completes one rotation each time it completes an orbit about the Earth.

14. From the observation that the same side of the Moon always faces the Earth, one can conclude that A. The Moon does not rotate. B. The Moon completes one rotation every day. C. The Moon completes one rotation each time it completes an orbit about the Earth.

15. T or F
Planetary scientists believe that the Moon was most likely a nearby small planet gravitationally captured by the Earth.

16. T or F
Planetary scientists believe that the Moon was most likely a nearby small planet gravitationally captured by the Earth.

17. T or F
The Sun causes tides on the Earth in addition to the Moon.

18. T or F
The Sun causes tides on the Earth in addition to the Moon.

19. T or F
Until we sent missions to the Moon, no one on Earth had seen the far side of the Moon.

20. T or F
Until we sent missions to the Moon, no one on Earth had seen the far side of the Moon.

21. T or F
We can think of the high tide on the side of the Earth opposite the Moon as a result of the Moon pulling the Earth away from the water.

22. T or F
We can think of the high tide on the side of the Earth opposite the Moon as a result of the Moon pulling the Earth away from the water.

23. T or F
The spring tides occur in spring seasons and the neap tides in autumn.

24. T or F
The spring tides occur in spring seasons and the neap tides in autumn.

25. T or F
The Moon contains small amounts of frozen water that is mixed in with its rocks.

26. T or F
The Moon contains small amounts of frozen water that is mixed in with its rocks.

27. T or F
Because of its distance, the Sun does not have any effect on Earth's ocean tides.

28. T or F
Because of its distance, the Sun does not have any effect on Earth's ocean tides.

29. T or F
There is a permanent dark side of the Moon.

30. T or F
There is a permanent dark side of the Moon.

31. T or F
Like the near side of the Moon, the far side has the same general features, a mix of maria and highlands.

32. T or F
Like the near side of the Moon, the far side has the same general features, a mix of maria and highlands.

33. T or F
Solar tides are not as strong as lunar tides mostly because the Sun is much farther away than the Moon.

34. T or F
Solar tides are not as strong as lunar tides mostly because the Sun is much farther away than the Moon.

35. T or F
The Earth's rotation is being gradually slowed by the Moon's gravity.

36. T or F
The Earth's rotation is being gradually slowed by the Moon's gravity.

37. When our Earth becomes tidally locked with the Moon, which of the following statements will be true? A. The Moon will always be visible only from one side of the Earth. B. There will be no eclipses. C. The Moon will not go through phases. D. An astronaut on the Moon would see only one side of the Earth. E. Both A and D.

38. When our Earth becomes tidally locked with the Moon, which of the following statements will be true? A. The Moon will always be visible only from one side of the Earth. B. There will be no eclipses. C. The Moon will not go through phases. D. An astronaut on the Moon would see only one side of the Earth. E. Both A and D.

39. Why do we always see only one side of the Moon. A
Why do we always see only one side of the Moon? A. The Moon does not rotate. B. The Moon is tidally locked with the Earth. C. The far (opposite) side only faces the Earth during the daytime when the Sun's light outshines the Moon. D. From time to time we see all the sides of the Moon from the Earth.

40. Why do we always see only one side of the Moon. A
Why do we always see only one side of the Moon? A. The Moon does not rotate. B. The Moon is tidally locked with the Earth. C. The far (opposite) side only faces the Earth during the daytime when the Sun's light outshines the Moon. D. From time to time we see all the sides of the Moon from the Earth.

41. If the Moon were farther from the Earth, compared to now, the tides would be A. About the same as now. B. Neap tides would be shallower, and spring tides would be taller than now. C. Less tall all the time. D. Higher all the time.

42. If the Moon were farther from the Earth, compared to now, the tides would be A. About the same as now. B. Neap tides would be shallower, and spring tides would be taller than now. C. Less tall all the time. D. Higher all the time.

43. Which of the following theories for the origins of the Moon is general accepted by astronomers? A. The Moon formed alongside the Earth (the twin theory). B. The Moon is the result of a collision between the Earth and a Mars sized object in the early days of the Solar System (the collision theory). C. The Moon was originally a bulge on the Earth that was flung off by the rapidly spinning Earth (fission theory). D. The Moon formed somewhere else and was later captured by the Earth (capture theory).

44. Which of the following theories for the origins of the Moon is general accepted by astronomers? A. The Moon formed alongside the Earth (the twin theory). B. The Moon is the result of a collision between the Earth and a Mars sized object in the early days of the Solar System (the collision theory). C. The Moon was originally a bulge on the Earth that was flung off by the rapidly spinning Earth (fission theory). D. The Moon formed somewhere else and was later captured by the Earth (capture theory).

45. The primary reason the Moon lacks an atmosphere is because. A
The primary reason the Moon lacks an atmosphere is because. A. The Moon is made up of the wrong kinds of rocks to release atmospheric gases. B. The Earth's gravity pulls away any atmosphere the Moon collects. C. The Moon lacks sufficient gravity to retain an atmosphere. D. There is no life on the Moon.

46. The primary reason the Moon lacks an atmosphere is because. A
The primary reason the Moon lacks an atmosphere is because. A. The Moon is made up of the wrong kinds of rocks to release atmospheric gases. B. The Earth's gravity pulls away any atmosphere the Moon collects. C. The Moon lacks sufficient gravity to retain an atmosphere. D. There is no life on the Moon.

47. One result of bombardment of the Moon's surface is a layer of broken, pulverized, and powdered rock called A. Maria. B. Regolith. C. Basalt. D. Lunar rays

48. One result of bombardment of the Moon's surface is a layer of broken, pulverized, and powdered rock called A. Maria. B. Regolith. C. Basalt. D. Lunar rays

49. Which of the following is not a kind of geological feature found on the Moon? A. Scarp B. Crater C. Maria D. Rille

50. Which of the following is not a kind of geological feature found on the Moon? A. Scarp B. Crater C. Maria D. Rille

51. The Moon is about one-quarter the diameter of the Earth
The Moon is about one-quarter the diameter of the Earth. How does its mass compare? A) The Moon is 1/4th as massive as Earth. B) The Moon is 1/6th as massive as Earth. C) The Moon is 1/32nd as massive as Earth. D) The Moon is 1/81st as massive as Earth.

52. The Moon is about one-quarter the diameter of the Earth
The Moon is about one-quarter the diameter of the Earth. How does its mass compare? A) The Moon is 1/4th as massive as Earth. B) The Moon is 1/6th as massive as Earth. C) The Moon is 1/32nd as massive as Earth. D) The Moon is 1/81st as massive as Earth.

53. The large dark areas on the Moon that form the face of the "Man in the Moon" are called what? A) craters and rays B) rilles C) maria D) all of the above

54. The large dark areas on the Moon that form the face of the "Man in the Moon" are called what? A) craters and rays B) rilles C) maria D) all of the above

55. Craters form when _________
Craters form when _________. A) lunar volcanoes blow their tops B) solid bodies such as asteroids strike the Moon's surface. C) pieces of the Moon fall off, leaving holes in its surface. D) Both a and c.

56. Craters form when _________
Craters form when _________. A) lunar volcanoes blow their tops B) solid bodies such as asteroids strike the Moon's surface. C) pieces of the Moon fall off, leaving holes in its surface. D) Both a and c.

57. What we call the Moon's surface layer
What we call the Moon's surface layer? A) regolith B) rilles C) maria D) craters

58. What we call the Moon's surface layer
What we call the Moon's surface layer? A) regolith B) rilles C) maria D) craters

59. What are rays. A) Canyons, caused by lava flows or crustal cracking
What are rays? A) Canyons, caused by lava flows or crustal cracking. B) Long, light streaks of pulverized rock radiating outward from craters. C) Mountainous regions. D) Areas with no craters at all.

60. What are rays. A) Canyons, caused by lava flows or crustal cracking
What are rays? A) Canyons, caused by lava flows or crustal cracking. B) Long, light streaks of pulverized rock radiating outward from craters. C) Mountainous regions. D) Areas with no craters at all.

61. The lunar highlands have more craters than the maria because __________. A) the surface of the maria is liquid and craters quickly disappear there. B) the material composing the highlands is very soft and easily cratered. C) the maria are much younger than the highlands. D) the maria are much older than the highlands.

62. The lunar highlands have more craters than the maria because __________. A) the surface of the maria is liquid and craters quickly disappear there. B) the material composing the highlands is very soft and easily cratered. C) the maria are much younger than the highlands. D) the maria are much older than the highlands.

63. How were the maria formed
How were the maria formed? A) Maria were formed by ancient oceans on the Moon's surface. B) Maria formed from ash falls from long dead volcanoes. C) Molten rock from the Moon's interior flooded the huge basins after large impacts. D) They were formed by the huge tidal interaction between the Earth and Moon.

64. How were the maria formed
How were the maria formed? A) Maria were formed by ancient oceans on the Moon's surface. B) Maria formed from ash falls from long dead volcanoes. C) Molten rock from the Moon's interior flooded the huge basins after large impacts. D) They were formed by the huge tidal interaction between the Earth and Moon.

65. Why doesn't the Moon have an atmosphere
Why doesn't the Moon have an atmosphere? A) It never had volcanoes and the gravity is too weak to hold a substantial atmosphere. B) The blasts that formed the craters blew it away. C) The Moon's atmosphere was drawn away from it by Earth's stronger gravitational force. D) The solar wind evaporated the Moon's atmosphere.

66. Why doesn't the Moon have an atmosphere
Why doesn't the Moon have an atmosphere? A) It never had volcanoes and the gravity is too weak to hold a substantial atmosphere. B) The blasts that formed the craters blew it away. C) The Moon's atmosphere was drawn away from it by Earth's stronger gravitational force. D) The solar wind evaporated the Moon's atmosphere.

67. Why is the Moon's surface cratered but the Earth's not
Why is the Moon's surface cratered but the Earth's not? A) The Moon's stronger magnetic field attracted more iron asteroids. B) Meteors bounce off the Earth's atmosphere. C) Earth's impact craters have been mostly obliterated by erosion and plate tectonics. D) When the dinosaurs died, their remains filled all the Earth's craters

68. Why is the Moon's surface cratered but the Earth's not
Why is the Moon's surface cratered but the Earth's not? A) The Moon's stronger magnetic field attracted more iron asteroids. B) Meteors bounce off the Earth's atmosphere. C) Earth's impact craters have been mostly obliterated by erosion and plate tectonics. D) When the dinosaurs died, their remains filled all the Earth's craters

69. The Moon does turn on its axis but with a rotation period exactly equal to its orbital period, a condition known as
synchronous rotation
tidal braking
differential gravitational force

70. The Moon does turn on its axis but with a rotation period exactly equal to its orbital period, a condition known as
synchronous rotation
tidal braking
differential gravitational force