1. In which layer of the atmosphere do meteors usually burn up?

2. In which layer of the atmosphere does weather occur?

3. In which layer of the atmosphere do auroras form?

4. The force of air exerted on us is called

5. The transfer of energy through space is

6. What is the chemical formula for oxygen we breathe?

7. For a cloud to form, you need water vapor, cooling air, and

8. Which of the following is not necessary for cloud formation?

9. As altitude increases, air pressure

10. The boundary between air masses that have different temperatures and/or amounts of water vapor is called a