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Conceptual Questions



1

Suppose the Earth orbited the Sun in 225 days. What effect would that have on the length of the Moon's synodic period? Explain your answer.
2

On June 8, 2004, the planet Venus cross the disk of the Sun. What part of the shadow of Venus were we in when that happened?
3

When we see a total lunar eclipse, what kind of eclipse would be seen by an observer on the Moon?
4

What is the phase of the Earth, as seen from the Moon, during a total solar eclipse?
5

Describe the ways in which the chemical compositions of Earth rocks and lunar samples are similar and different.
6

How do the ages of lunar samples compare with the ages of samples from the Earth's ocean bottoms? What is the reason for the great difference in age?
7

How has the crater density of the maria changed since the maria formed?
8

The terrae have reached crater saturation. In the future, how will the crater density of the terrae change with time?
9

Examination of images of the surface of Jupiter's satellite Io has failed to find a single impact crater. What conclusion about the surface of Io can you draw from this observation?
10

Why does the Moon have so little atmosphere?
11

Summarize the evidence that the Moon does not have a large metallic core.
12

The giant impact theory of the origin of the Moon combines features of the three previous theories of the Moon's origin. Describe features held in common by the giant impact theory and each of the three earlier theories.





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