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 most of the mass of the atmosphere. 4.Clouds in upper part have ice pellets

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 -90˚C 3.Burns up Meteoroids you see as a shooting star. C. Mesosphere

6. Thermo=Heat 1.Very thin air. (very little air) 2.Molecules spread out 3.No Outer Limit 4.N 2 & O 2 absorb heat 5.1,800°C 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. 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