1. Why is Earth’s surface not riddled with craters as is that of the Moon? 2. List the layers of Earth’s atmosphere. 3. Describe the process of plate tectonics. Give specific examples of geographic...

1. Why is Earth’s surface not riddled with craters as is that of the Moon?

2. List the layers of Earth’s atmosphere.

3. Describe the process of plate tectonics. Give specific examples of geographic features created by plate tectonics.

4. To review Earth’s tectonic plates, do Interactive Exercise 6-1 and print out or sketch the completed diagram.