atmosphere answer key - manhasset union free school · pdf file ·...
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Atmosphere Answer Key
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March 14, 2016
Atmosphere Answer Key
2
March 14, 2016
Envelope of gases surrounding Earth
78% Nitrogen21% Oxygen1% other (CO2, H2O(g), CH4, etc)
weather, clouds, birds, mountains
air pressure decreases as altitude increases
Troposphere closest to surface, weather and clouds, thickest layer, temp dec. Stratosphere ozone layer traps UV rays, temp inc., jets Mesosphere temp dec., where meteors burn up before hitting Earth
thermosphere first exposed to sun, temp. very variable, air very thin, auroras, ionosphere, space shuttle orbits
exospheremerges into space
increase in CO2, traps more radiation, increases global temperature
No! Greenhouse effect makes Earth a livable planet. TOO MUCH greenhouse effect is the problem