2.  Earth’s atmosphere is divided into several different atmospheric layers extending from the Earth’s surface outward: › Troposphere › Stratosphere › Mesosphere › Thermosphere › Exosphere

3.  Troposphere Temperature: › As altitude increases, temperature decreases!

4.  Troposhpere Gases: › Nitrogen and oxygen are found in ALL layers of the atmosphere › There are other trace gases in the troposphere

5.  Troposphere Air Pressure: › Greatest amount of pressure

6.  Troposphere Interesting Facts: › Where we live › Where weather happens

7.  Stratosphere Temperature: › Cold!

8.  Stratosphere Gases: › Nitrogen › Oxygen › Ozone

9.  Stratosphere Air Pressure: › Decreases as you move through the layers

10.  Stratsosphere Interesting Facts › Planes fly in this layer › This is where the ozone layer is › Absorbs ultraviolet radiation (UV)

11.  Mesosphere Temperature: › Coldest Layer

12.  Mesosphere Gases: › Nitrogen › Oxygen

13.  Mesosphere Air Pressure: › Decreases as you move through the layers

14.  Mesosphere Interesting Facts › Meteroids burn up in this layer › This can cause meteor trails.