1. The Atmosphere

2. Atmosphere
- A blanket of air that surrounds the Earth.

3. What do you think air is made of?
Air is made up of gases:
78% nitrogen
21% oxygen
1% trace gases
(a combination of several gases)

4. Fun Fact About Oxygen Would air that is 100% oxygen be better for us?
We require oxygen to breathe but we breathe air that is made up of only 21% oxygen.
Would air that is 100% oxygen be better for us?
Actually 100% oxygen can be harmful. It can cause nausea, dizziness and chest pains.

5. How Earth’s Atmosphere Compares to our neighbors

6. The atmosphere is divided into four distinct layers.
Troposphere
Stratosphere
Mesosphere
Thermosphere
The upper layer of the atmosphere, the exosphere, is the layer beyond the thermosphere that includes space.

7. COLOR RED Troposphere Height: Extends to 0-10KM Contains: People
Weather
Buildings
Bad Ozone
Temperature: 18*C—60*C
COLOR RED

8. Stratosphere Color Yellow Height: Extends from 10-50Km Contains:
Flying Planes
Weather Balloons
Good Ozone
Temperature: -60*C-0*C
Color Yellow

9. Mesosphere Color Green Coldest Layer Height: Extends from 50-80km
Contains:
Meteors
Coldest Layer
Temperature: 0*C—90*C
Color Green

10. Color BLUE Thermosphere Height: Extends from 80-120km Contains:
Auroras (Northern Lights)
Space Shuttle Orbits
Hottest Layer
Temp: -90*C-90*C
Color BLUE

11. Exosphere
Height: Extends from about 400 miles and up.
Color Black