1. Write down everything you know about Earths Atmosphere

2. Characteristics of the Atmosphere (ATM)
The atmosphere is a mixture of gases that surrounds Earth
Earth has a unique ATM – no other planet in the solar system has an ATM with the exact mixture of gases

3. Composition Gases 78% Nitrogen 21% Oxygen .93% Argon
.04% Carbon Dioxide
Water Vapor
Other Particles
Dust, dirt, smoke, volcanic ash, sea salt

4. Plot all data points on your graph.
Layering of the ATM
Plot all data points on your graph.

5. Prefix quiz 11-20 FRIDAY Finish plotting all data points on your graph
Connect the dots
Draw a horizontal line at 10km, 45 km, and 80 km

6. Atmosphere Tree Map – pg. 198
For each layer of the ATM, you need to have 3 facts in your own words!!
When you get finished, you can:
Read a book
Work on other HW
Study for your Prefix Quiz #2 (TOMORROW)

8. Layers of the ATM Troposphere: You are sitting in this layer!
Where all weather occurs
Temperature increases or decreases with altitude

9. Layers of the ATM Stratosphere:
Where the ozone layer is, therefore increasing the temperature
The ozone layer protects life on Earth by absorbing UV rays
Air is thinner and drier

10. Layers of the ATM Mesosphere: The coldest layer in the ATM
Where meteors tend to burn up

11. Layers of the ATM Thermosphere: Has the highest temperature in the ATM
Where space begins
Auroras happen here!

12. Layers of the ATM Exosphere: Exo means outside
Sometimes called the Ionosphere
Outermost layer of earths ATM
Reaches up to 10,000 km
Temperatures are anywhere 0-1,700 C
Where the International Space Station orbits Earth

13. You jump off a diving board into the deep end of the pool
You jump off a diving board into the deep end of the pool. Describe what you feel as you get closer to the bottom

14. Air
Air has weight!
Anything with mass has a weight. Air has mass therefore it has weight!
Create a balance beam out of a meter stick. Blow up 2 balloons and show how much they weigh. Then let the air out of 1 balloon to show how air has weight
14.7 lbs!!

15. Air Pressure
Air molecules move constantly and is affected by gravity. The force of this movement causes air pressure.

16. Differences in air pressure cause Earth’s winds and weather changes.
How can air pressure change?

17. Air pressure can change with temperature and elevation

18. Air How much does air weigh? 14.7 lbs!!
Trash Bag demo – when vacuum is turned on, the pressure inside the bag is reduced and becomes lower than the pressure outside. Reducing the pressure inside allows you to feel the 14.7 psi of atmospheric pressure.

19. **As altitude increases, air pressure decreases**
As you move up the ATM, the air molecules are farther apart and decrease in pressure
**As altitude increases, air pressure decreases**