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1.5 Atmosphere (Layers of the atmosphere (tropophere: 75-80% of gases are…
1.5 Atmosphere
Layers of the atmosphere
are defined by altitude
tropophere: 75-80% of gases are here due to gravity
0-15 km
stratosphere 15-50
mesophere 50-85
thermosphere 85-700
exosphere 700-?
Elevation and Altitude
elevation:distance above sea level of something on the land
altitude: something in the air
height: distance above ground
pressure and temperature
temperature decreases with altitude
composition of the atmosphere
the atmosphere is most dense at the earths surface, and then it thins out
21% oxygen
0.9% argon
nitrogen 78%
co2, nitrous, acid, methane ozone 1%
water vapor 0-4%