14. The word "debris" in line 5 is closest in meaning to
(a) rubbish
(b) satellites
(c) moons
(d) earth
15. According to the passage, the Moon is
(a) older than the Earth
(b) protected by a dense atmosphere
(c) composed of a few active volcanoes
(d) the primary cause of Earth's ocean tides
16. The word "uneven " in line 11 is closest in meaning to
(a) Heavier
(b) Equally distributed
(c) Orderly
(d) Not uniform
17. Why does the author mention "impact craters" in line 16?
(a) to show the result of the Moon not having an atmosphere
(b) to show the result of the Moon not having active tectonic or volcanic activity
(c) to explain why the Moon has no plant life because of meteorites
(d) to explain the corrosive effects of atmospheric weathering
18. The word "erase" in line 19 is closest in meaning to
(a) change
(b) impact
(c) obliterate