1. ATMOSPHERE

2. The Atmosphere is important!
Provides gasses needed for life (oxygen and carbon dioxide, etc)
Protects us from heat and radiation from the Sun (blocks some of it)
Acts as an insulator and keeps Earth warm by trapping some heat
Burns up most meteors before impact occurs

3. Troposphere Layer closest to Earth’s surface Contains life and weather
Planes fly at the top of this layer
Temperature decreases as altitude increases

4. Stratosphere 2nd layer from Earth
Contains Ozone Layer – protects us from
UV rays by absorbing them
Weather balloons are in this layer
Temperature increases as altitude increases due to Ozone Layer

5. Mesosphere Middle layer Contains Ionosphere – reflects radio waves
Meteors burn up here
Very thin atmosphere and coldest layer

6. Thermosphere 4th layer that also contains ionosphere
Filters X-Rays and UV rays from the Sun
Warmest Layer
Space Shuttles and Auroras are found in this layer

7. Exosphere Farthest layer from Earth’s surface
Air pressure and density is very low
Air molecules can escape into space
Satellites orbit here