1. Atmosphere Review
Quick Review

2. A layer of gas that surrounds Earth is called the ___________
atmosphere

3. What element is the most abundant gas in the atmosphere?
Nitrogen

4. What holds the gases of the atmosphere near Earth’s surface?
gravity

5. Air molecules are compressed together and exert force on Earth’s surface__________.
Air pressure

6. What layer of the atmosphere does all weather occur?
troposphere

7. What happens to atmospheric pressure as altitude increases?
decreases

8. What layer of the atmosphere contains the ozone layer?
stratosphere

9. What is the name of the instrument that meteorologist use to measure atmospheric pressure?
barometer

10. What layer of Earth’s atmosphere blends into space?
exosphere

11. What is the main source of air pollution?
Burning fossil fuels such as coal