1. Earth’s Atmosphere
Review

2. Atmosphere The gases surrounding the earth.
What is it?
The gases surrounding the earth.
It contains gases, solids, and liquids.

3. Troposphere Weather Water cycle /clouds Living things: plants/animals
What occurs or is found in the troposphere?
Weather
Water cycle /clouds
Living things: plants/animals
Mt. Everest!
Troposphere

4. Is the layer with the greatest density
Troposphere
Is the layer with the greatest density

5. Mt. Everest Is still in the troposphere! Mt. Everest is 29,000 ft
5.5 miles
8.9 km
The troposphere starts at Earth's surface and goes up to a height of:
7 to 20 km.
4 to 12 miles
23,000 to 65,000 feet above sea level.

6. Stratosphere What occurs or is found in the stratosphere? Jet planes
Ozone layer
Weather ballons
Stratosphere

7. Temperature increases in the stratosphere because of the ozone layer.

8. So….How is the stratosphere different from the troposphere?
Temperature increases, warms at a higher altitude

9. Gases in the atmosphere

10. Atmospheric Gases
Which gas is the highest?
Nitrogen
Which gas is the lowest?
Carbon dioxide

11. What is the Ozone Layer? Located in the stratosphere
Shields (protects) harmful ultraviolet light from the sun, allowing life to thrive on earth.
Chemical formula O3
What is the Ozone Layer?

12. What does the greenhouse gases do?
Trap heat that radiates from the earth.

13. Atmospheric Relationships and Graphs Air Density

14. Atmospheric Relationships and Graphs Temperature

15. What happens to temperature as elevation increases in the troposphere?
Temperature and the air is colder. Decreases.

16. Because…. Air near mountain tops is less dense.

17. The force or weight of the air pressing down
What is Air Pressure?

18. Where is air pressure the greatest and least?
Greatest at sea level
Least in the mountains, as you go higher in altitude

19. Why does the troposphere have the highest amount of atmospheric pressure?
It has the highest concentration of gas particles.

20. Why does the troposphere have the highest amount of atmospheric pressure?
It has the highest concentration of gas particles.

21. 20. The air pressure surrounding the balloon decreases.

22. Why does the balloon expand (get bigger)?
Less pressure as you go up higher in altitude (elevation)..