1.  Where do meteorites come from in space?

2.  What kinds of meteorites are found on Earth?  In other words, how are meteorites classified or arranged?  This goes back in part (but not totally) to Question # 1.

3.      How did these different kinds of meteorites form?  In other words, what does each of the main kind of meteorite represent?  This goes back in part (but not totally) to Question # 1.

4.      How does an impact crater form?  What does the size of the crater tell us about the size of the projectile?

5.      Why are there different crater densities on the Moon (different numbers of craters in one area compared to another)?  At least two completely different explanations.

6.      What is the relationship between the crater density (crater count) and age for the Moon?  For the Earth?

7.  There are real problems in using crater density to determine the age of a surface.  Think of at least two problems that would make this method suspect.