1. Gravity on the moon is about __________ the gravity on Earth.
A. one eightieth
B. the same as
C. one half
D. one sixth
2. The moon has no atmosphere, because
A. the surface temperature varies greatly.
B. gravity at the surface is not strong enough to hold gases.
C. the moon has significantly more mass than the Earth.
D. the moon has no gravity.
3. The moon’s surface has plains of dark, solidified lava called
A. rilles.
B. anorthosites.
C. maria.
D. regolith.
4. __________, which run along the moon’s surface, are thought to be leftover lava channels.
A. Rilles
B. Anorthosites
C. Maria
D. Regolith
5. When did the moon’s development begin?
A. 4 billion years ago
B. 6 billion years ago
C. 2 billion years ago
D. 1 billion years ago
6. The moon’s regolith is composed of
A. a layer of dust and rock.
B. long deep channels.
C. rough highlands.
D. long, narrow elevations of rock.
7. One main difference between Earth rocks and lunar rocks is that
A. most lunar rock has been crushed by asteroids, comets, or meteorites.
B. earth rocks are more dense than most types of lunar rocks.
C. earth and lunar rocks contain different proportions of the same elements.
D. earth and lunar rocks contain different elements in the same proportions.
8. What evidence indicates that the interior of the moon is layered?
A. The shape of the moon’s orbit around the Earth
B. The composition of moon rocks
C. The moon’s weak gravity
D. The detection of moonquakes
9. What did the surface of the moon look like 3 billion years ago?
A. The surface was covered by an ocean of molten rock.
B. The surface looked the same as it looks today.
C. The surface had active volcanoes and earthquakes.
D. The surface was cooled and solid, but had no craters.
10. The moon is comprised largely of
A. the same material that comprises Earth.
B. material from Earth’s silica rich mantle.
C. material from Earth’s dense, metallic core.
D. material from meteors.
11. How did magma form in the interior of the moon?
A. Scientists do not yet know.
B. The movement of tectonic plates
C. A long period of intense meteorite bombardment
D. Radioactive decay of materials
12. What are two characteristics of the far side of the moon?
A. The crust is about 60 km thick, and the surface is covered with regolith.
B. The crust is up to 100 km thick, and the surface has many maria.
C. The crust is up to 100 km thick, and the surface is mountainous.
D. The crust is about 60 km thick, and the surface has few visible craters.
13. The moon is at apogee when it is
A. farthest from Earth.
B. directly above the North Pole.
C. closest to Earth.
D. directly between the Earth and the sun.
14. When the moon casts a shadow, sunlight is completely blocked in the
A. gibbous.
B. umbra.
C. penumbra.
D. antumbra.
15. People on Earth can see a partial solar eclipse when they are in the
A. gibbous.
B. umbra.
C. penumbra.
D. antumbra.
16. A total solar eclipse is visible from the
A. gibbous.
B. umbra.
C. penumbra.
D. antumbra.
17. The diamond ring effect is visible during a(n)
A. penumbral eclipse.
B. partial solar eclipse.
C. annular eclipse.
D. total solar eclipse.
18. An annular eclipse is visible when
A. the moon is at or near perigee.
B. the Earth is between the sun and the moon.
C. the moon is at or near apogee.
D. the outer layers of the sun’s atmosphere are visible.
19. A(n) __________ occurs when the entire moon passes through the Earth’s penumbra.
A. penumbral eclipse
B. partial lunar eclipse
C. annular eclipse
D. partial solar eclipse
20. The moon appears to have a reddish color during a
A. total solar eclipse.
B. partial lunar eclipse.
C. total solar eclipse.
D. total lunar eclipse.
21. The Earth is directly between the moon and the sun during which phase?
A. First quarter
B. New moon
C. Third quarter
D. Full moon
22. The lighted part of the moon’s near side is larger than a semicircle and still increasing in size during which phase?
A. Waxing crescent
B. Waning crescent
C. Waxing gibbous
D. Waning gibbous
23. A sliver of the near side of the moon is visible as the moon enters the __________ phase.
A. waxing crescent
B. waning crescent
C. waxing gibbous
D. waning gibbous
24. Light that first reflects off of Earth’s clouds and oceans and then reflects off of the moon is called
A. earthshine.
B. reflected earthlight.
C. sunlight.
D. moonshine.
25. The balance point of the Earth-moon system is located at the
A. center of the Earth-moon orbit.
B. center of the Earth.
C. epicenter.
D. barycenter.
