2. Earth’s Atmosphere Text pg. D6-D9 V. Martinez

3. 1. What is the layer of air that surrounds the planet?  Atmosphere is the layer of air that surrounds the planet.

4. 2. What are the particles of air pressing on the earth’s surface called?  Air pressure is the particles of air pressing on the earth’s surface.

5. 3. What is the layer of the atmosphere closest to the earth?  The troposphere is the layer of the atmosphere closest to the earth.  We live in the troposphere. This is where the weather happens.

6. 4. What is the second layer of the earth’s atmosphere?  The stratosphere is the second layer of the earth’s atmosphere.

7. 5. The atmosphere formed millions of years ago as gas from _____ collected around the planet.  The atmosphere formed millions of years ago as gas from erupting volcanoes collected around the planet.

8. 6. The atmosphere is made up of billions of ______ particles.  The atmosphere is made up of billions of gas particles.

9. 7. Almost all weather happens in what layer of the earth?  Almost all weather happens in the troposphere.

10. 8. Plants use carbon dioxide during what process?  Plants use carbon dioxide during photosynthesis.

11. 9. Water vapor condenses to form what?  Water vapor condenses to form clouds.

12. 10. Air pressure changes as you go ______ in the atmosphere.  As pressure changes as you go higher in the atmosphere.

13. 11. Earth’s atmosphere is divided into _______ layers.  Earth’s atmosphere is divided into four main layers.

14. 12. The _____ protects living things from harmful rays of the sun.  The ozone protects living things from harmful rays of the sun.

15. 13. What is the coldest layer of the Earth’s atmosphere?  The mesosphere is the coldest layer of the earth’s atmosphere.

16. 14. In the _____ air temperature increases quickly with height.  In the stratosphere air temperature increase quickly with height.

17. 15. The atmosphere looks like a _______ that surrounds the earth.  The atmosphere looks like a thin blanket that surrounds the earth.

18. 16. Water vapor and carbon dioxide absorb _____ energy.  Water vapor and carbon dioxide absorb heat energy.

19. 17. Air over bodies of water usually contains ____ water vapor than air over land.  Air over bodies of water usually contains more water vapor than air over land.

20. 18. Each of the Earth’s layers blends into the next and the thermosphere fades into ____.  Each of the Earth’s layers blends into the next and the thermosphere fades into outer space.

21. In the experiment with the ruler and balloons, when the balloon was popped the ruler went down on the opposite side. What does this show?  It shows that air is matter because it has weight and takes up space.