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Explorations: Stars, Galaxies, and Planets
Thomas Arny, University of Massachusetts
The Moon

Questions for Review



1

What are the Moon’s mass and radius compared with the Earth’s?
2

Describe a crater and how it is formed.
3

What are lunar rilles? What are rays?
4

How do the maria differ from the highlands?
5

What formed the maria? Why are they smooth?
6

Why has the Moon no atmosphere?
7

Why is the Moon’s surface cratered but the Earth’s not?
8

How do astronomers believe the Moon formed? What supports this theory? How does the theory explain why the Earth and Moon have such different densities?
9

How are tides formed on the Earth?
10

Why does the Moon form two tidal bulges on the Earth?
11

Why aren’t there eclipses each month?
12

What is an eclipse season?
13

How does the Moon rotate? Why does it spin in this manner?








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