Atmosphere

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Atmosphere

  1. 1. Unit 10:Atmosphere Layers
  2. 2. I. Atmosphere or “air” thin layer of gases that surrounds Earth. Extends from surface to hundreds of km above surface.
  3. 3. A. 78% N, 21% O2qremaining 1% CO2,He, Ne, Ar, H2Ovapor, & others.
  4. 4. B. Protects us from UVC. Helps keep Earth warm
  5. 5. II. The Five Layers
  6. 6. A. Troposphereqextends fromEarth’s surface toabout 10 km (6 mi.)above surface
  7. 7. 1. it’s the air we breathe2. mostweatheroccurs here
  8. 8. B. Stratosphereqextends from 10km to 45 km (28 mi)above Earth
  9. 9. 1. very thin air2. not as turbulent as troposphere
  10. 10. 3. planes fly in lower part of stratosphere4. contains the ozone layer
  11. 11. C. Mesosphere 45-80kmD.Thermosphere 80-500km
  12. 12. E. Exosphere 500km onqgases get thinner and thinner
  13. 13. q Biosphere - The layer around the Earth in which life occurs naturally, extending to about 8km above the Earth to the deepest part of the ocean, which is 8 km deep

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