Homework 2. Due Oct 21

1. List 9 objects in the solar system, three each with gaseous, icy and rocky surface.

2. If there is a solar eclipes today, when is the next possible eclipse? Why might there not be an eclipse at that time?

3. Give one example each for each of Newton's laws of motion.

4. When standing on the Moon, an astronaut dropped a feather and a rock
from the same height. Both hit the surface at the same time. Can you
explain this using Newton's second law of motion, and his law of gravity?

5. Make a lits of at least 10 ``key words" with special definitions in
astonomy. Give a very short definition of each.

6. How is the inside of the sun different form the surface?