1. 6.1: Properties of the Atmosphere
Unit 6: Meteorology

2. Air

3. Air
Air is matter.

4. Air
Air is matter.
Air has mass

5. Air
Air is matter.
Air has mass
Air has pressure

6. Air
Air is matter.
Air has mass
Air has pressure
The atmosphere is an envelope of gases that surrounds the earth.

7. Composition of the Air

8. Composition of the Air
About 78% of the air is made up of nitrogen.

9. Composition of the Air About 78% of the air is made up of nitrogen.
About 20% of the air is made up of oxygen.

10. Composition of the Air About 78% of the air is made up of nitrogen.
About 20% of the air is made up of oxygen.
About 0.04% of the air is made up of carbon dioxide.

11. Air Layers
Earth Science Reference Table, Page 14

12. Air Layers The troposphere is the lowest layer of the atmosphere.
Earth Science Reference Table, Page 14

13. Air Layers The troposphere is the lowest layer of the atmosphere.
The stratosphere is a middle layer of the atmosphere.
Earth Science Reference Table, Page 14

14. Air Layers The troposphere is the lowest layer of the atmosphere.
The stratosphere is a middle layer of the atmosphere.
Mesosphere extends from 50 to 80 kms.
Earth Science Reference Table, Page 14

15. Air Layers The troposphere is the lowest layer of the atmosphere.
The stratosphere is a middle layer of the atmosphere.
Mesosphere extends from 50 to 80 kms.
The upper layer of the troposphere is the tropopause.
Earth Science Reference Table, Page 14

16. Troposphere
Thunderstorms and Rainbows happen in troposphere

17. Troposphere Most atmospheric water vapor is in the troposphere.
Thunderstorms and rainbows happen in troposphere

18. Troposphere Most atmospheric water vapor is in the troposphere.
Most air is in the troposphere.
Thunderstorms and rainbows happen in troposphere

19. Troposphere Most atmospheric water vapor is in the troposphere.
Most air is in the troposphere.
Most weather is in the troposphere.
Thunderstorms and rainbows happen in troposphere

20. Stratosphere Polar Stratospheric Clouds
The stratosphere is a layer of Earth's atmosphere. We live in the troposphere, the layer below the stratosphere. There are many different kinds of clouds in the troposphere. However, there is only one kind of cloud in the stratosphere! Those clouds are called Polar Stratospheric Clouds (PSCs).
PSCs form at very high altitudes, between 15 and 25 km (about 50,000 to 80,000 feet). PSCs only form at very cold temperatures around -78° C (-108° F). Sometimes, in winter near the North or South Pole, temperatures in the lower stratosphere get that cold. That's when PSCs can form.
Polar Stratospheric Clouds

21. Stratosphere
The stratopause is the layer between the stratosphere and that mesosphere.
The stratosphere is a layer of Earth's atmosphere. We live in the troposphere, the layer below the stratosphere. There are many different kinds of clouds in the troposphere. However, there is only one kind of cloud in the stratosphere! Those clouds are called Polar Stratospheric Clouds (PSCs).
PSCs form at very high altitudes, between 15 and 25 km (about 50,000 to 80,000 feet). PSCs only form at very cold temperatures around -78° C (-108° F). Sometimes, in winter near the North or South Pole, temperatures in the lower stratosphere get that cold. That's when PSCs can form.
Polar Stratospheric Clouds

22. Stratosphere
The stratopause is the layer between the stratosphere and that mesosphere.
The ozone layer is in the stratopause.
The stratosphere is a layer of Earth's atmosphere. We live in the troposphere, the layer below the stratosphere. There are many different kinds of clouds in the troposphere. However, there is only one kind of cloud in the stratosphere! Those clouds are called Polar Stratospheric Clouds (PSCs).
PSCs form at very high altitudes, between 15 and 25 km (about 50,000 to 80,000 feet). PSCs only form at very cold temperatures around -78° C (-108° F). Sometimes, in winter near the North or South Pole, temperatures in the lower stratosphere get that cold. That's when PSCs can form.
Polar Stratospheric Clouds

23. Stratosphere
The stratopause is the layer between the stratosphere and that mesosphere.
The ozone layer is in the stratopause.
The ozone layer protects the earth from the ultraviolet light from the sun.
The stratosphere is a layer of Earth's atmosphere. We live in the troposphere, the layer below the stratosphere. There are many different kinds of clouds in the troposphere. However, there is only one kind of cloud in the stratosphere! Those clouds are called Polar Stratospheric Clouds (PSCs).
PSCs form at very high altitudes, between 15 and 25 km (about 50,000 to 80,000 feet). PSCs only form at very cold temperatures around -78° C (-108° F). Sometimes, in winter near the North or South Pole, temperatures in the lower stratosphere get that cold. That's when PSCs can form.
Polar Stratospheric Clouds

24. Upper Atmosphere
Atmospheric Layers

25. Upper Atmosphere Mesosphere is an upper layer of the atmosphere.
Atmospheric Layers

26. Upper Atmosphere Mesosphere is an upper layer of the atmosphere.
Thermosphere is the top layer of the atmosphere.
Atmospheric Layers