1. EARTH’S ATMOSPHERE

2. Composition of the Atmosphere
Oxygen= __________
Nitrogen = ________
Other gases = ________
argon., carbon dioxide, methane, helium, etc.

3. Layers of the Atmosphere
The atmosphere is divided into ____ layers.

4. Layers in the Atmosphere

5. Layers of the Atmosphere
4 Layers are:
1. Troposphere:
Closest to ground
All weather occurs here
As altitude goes up, temperature goes _____

6. Layers of the Atmosphere
2. Stratosphere
Ozone “layer” is located here
Jets fly there
As altitude goes up, temperature goes _____

7. Layers of the Atmosphere
Layers of the Atmosphere
3. Mesosphere:
Coldest layer
As altitude goes up, temperature goes _____

8. Layers of the Atmosphere
4. Thermosphere
Divided into 2 parts:
Ionosphere and Exosphere
Aurora borealis happens in ionosphere
Exosphere is considered “outer space”
As altitude goes up, temperature goes _____

12. Do you understand this stuff?
Name the 4 layers of the atmosphere.
Describe the chemical composition of the troposphere.
What causes the temperature to increase in the Stratosphere?
What causes the temperature to decrease in the Mesosphere?
Where does weather occur?
Describe the chemical composition of the mesosphere.

13. What is the temperature in the troposphere at 5 km?
-30 C
-20 C
0 C
-60 C
No clue 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

14. What is the temperature at 60 km?
-20 C
-45 C
-10 C
0 C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

15. Which layer goes from 50 km to 85 km?
Stratosphere
Mesosphere
Thermosphere
Troposphere 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

16. Which is the coldest layer?
Troposphere
Stratosphere
Mesosphere
Thermosphere

17. What criterion determines when each layer starts and stops?
Temperature
Altitude
Color
Composition
Prettiness

18. As altitude increases, density ________
Goes up
Goes down
Stays the same
IDK