atmos1011 - EarthsAtmosphere APEnvSci20102011...

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Earth’s Atmosphere AP Env Sci 2010-2011
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Earth’s Four Spheres • Lithosphere: – Solid Earth – Three Principle Parts: • Dense Core • Less Dense Mantle • Crust • Hydrosphere: – Water Portion • Oceans (97%), Streams, Lakes, Glaciers, Groundwater Atmosphere: Gaseous Layer Surrounding Earth • Biosphere: – All Life and Parts of Earth Where Life is Found
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Composition of the   Atmosphere Component Conc (volume%) Constant Nitrogen, N 2 78.08 Oxygen, O 2 20.95 Argon, Ar 0.93 Neon, Ne 0.0018 Helium, He 0.0005 Hydrogen, H 2 0.00005 Variable Water, H 2 O 0 to 4 Carbon Dioxide,  CO2 0.036 Methane, CH 4 0.00017 Ozone, O 3 0.000004 Carbon Monoxide,  CO 0.000002 Other < 0.000002
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The Layers of the Atmosphere Troposphere: – Temperature Decreases with Increasing Altitude  (6.5C/km) – Approximately 90% of Mass of Atmosphere – Significant Vertical Mixing of Air – Extends 9 km (poles) to 16 km (equator) ESSENTIALLY ALL WEATHER OCCURS HERE  
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atmos1011 - EarthsAtmosphere APEnvSci20102011...

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