What happens to water vapor concentration as altitude increases? What happens to air pressure as altitude increases? What happens to temperature as altitude increases?
Troposphere A. Troposphere Tropo- changing Closest to Earth’s surface Weather occurs here Contains most of the water vapor and CO 2 in atm Temperature decreases as altitude increases TropopauseTropopause: boundary – temp stops decreasing –Altitude varies with latitude and season
Stratosphere B. Stratosphere Strato- layer Extends to altitude of about 50 km Contains ozone layer Temp increases as altitude increases –Direct absorption of solar energy by ozone Stratopause: boundary –highest temp
Mesosphere C. Mesosphere Meso- middle Extends to about 80 km Temp decreases as altitude increases Coldest layer of atm Meteors burn up in this layer Mesopause: boundary –Marked by an increase in temp
If the Mesosphere is the coldest layer of the atmosophere, why do meteors burn up there?
Thermosphere D. Thermosphere Thermo- heat Temp increases steadily with altitude Nitrogen and oxygen absorb solar energy Air is very thin, temp recorded @ 2,000 o C Contains ionosphere –Layer where gases absorb solar rays and lose electrons, forming ions and free electrons –Used to reflect radio waves back to Earth –Charged particles create aurora borealis Exosphere: area where atm blends into space