List at least 3 ways that Jupiter has affected the asteroid belt.
2) What are Near-Earth Objects? What evidence is there that Earth has been struck by these objects? Why are there not as many craters on the Earth as on the Moon?
3) Describe how the presence of iridium was used to determine the cause of extinction of the dinosaurs.
4) What is the difference between a meteoroid, meteor, and a meteorite?
5) What are the two tails produced by a comet? Which direction does each tail extend?