1. Layers of the CH 15 Prentice Hall p.515-520 CH 15 Prentice Hall p.515-520 Atmosphere At 15 15. 4ppt

2. The four main layers of the Atmosphere are classified according to changes in: Additional Info How are the layers classified?

3. A. Troposphere tropo = changing conditions 1.We live in this layer 2.Weather occurs here 3.Thinnest Layer, contains 80% of the mass of the atmosphere. 4.Most dense layer 5.Temperature decrease with altitude

4. Strato= layered, spreading out. 1.Ozone Layer 2.3 Oxygen Atoms- O 3 3.Absorbs UV radiation- produces heat causes the top of this layer to be warmer B. Stratosphere

5. 1.Meso=Middle 2.Coldest Layer -120˚C at the top 3.Burns up Meteoroids you see as a shooting star. C. Mesosphere

6. Thermo=Heat 1.Very thin air. (very little air) extremely low density 2.1,500°C or higher, but feels cold due to low density. Too few particles collide with your body. 3.No Outer Limit D. Thermosphere (Divided into 2 layers)

7. Ions= charged particles 1.Causes the Aurora Borealis (Northern Lights) 2.Bounce radio communications off this layer. D1. Ionosphere

8. Exo=“outer” 1.Outer most layer of the thermosphere. 2.Satellites orbit here. ISS 205 mi, 400km D2. Exosphere

9. 1.Convert miles to km. 2.Convert km to cm. 3.Divide by 200,000 to get your scale cm. 4.Create your scale model by following steps 4-7 on the scaling the atmosphere sheet. Scaling the Atmosphere