atmosphere. atmosphere composition: gases - nitrogen, oxygen, argon, other gases compounds –...
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AtmosphereAtmosphere
AtmosphereAtmosphereComposition:Composition:
Gases - nitrogen, oxygen, argon, other gasesGases - nitrogen, oxygen, argon, other gasesCompounds – carbon dioxide, water vaporCompounds – carbon dioxide, water vapor
Atmospheric pressure – Atmospheric pressure – Gravity pulling the gases Gravity pulling the gases of the atmosphere towards the earth’s surface.of the atmosphere towards the earth’s surface.
BarometerBarometer – Instrument that measures – Instrument that measures atmospheric pressure.atmospheric pressure.
Ex. – mercury barometerEx. – mercury barometerStandard atmospheric pressureStandard atmospheric pressure – average – average atmospheric pressure at sea level. (29.92) atmospheric pressure at sea level. (29.92)
Mercury BarometerMercury Barometer
Layers of the AtmosphereLayers of the Atmosphere(Troposphere)(Troposphere)
TroposphereTroposphere – layer closest to the earth’s surface. – layer closest to the earth’s surface.- Almost all the water vapor and carbon dioxide is - Almost all the water vapor and carbon dioxide is found in this layer.found in this layer.- Temperature decreases at 6.5- Temperature decreases at 6.5°C/km until you °C/km until you reach 10km, where is stops decreasing.reach 10km, where is stops decreasing.- - TropopauseTropopause – the upper boundary of the – the upper boundary of the troposphere, where the temp decrease stops. troposphere, where the temp decrease stops.
StratosphereStratosphereStratosphere – Stratosphere – Extends upward to an altitude of Extends upward to an altitude of
50km.50km.
-- Contains almost all the Ozone (OContains almost all the Ozone (O33))
- - Stratopause –Stratopause – Marks the upper end of the Marks the upper end of the stratospherestratosphere
MesosphereMesosphere
Mesosphere – Mesosphere – extends to an altitude of 80 km.extends to an altitude of 80 km.- the coldest layer of the atmosphere (-90- the coldest layer of the atmosphere (-90°C)°C)- - MesopauseMesopause – upper boundary of the – upper boundary of the mesosphere.mesosphere.
ThermosphereThermosphere
Thermosphere – Thermosphere – the upper layer of our the upper layer of our atmosphere.atmosphere.- the air is very thin, cannot be measured with a - the air is very thin, cannot be measured with a regular thermometer.regular thermometer.- - IonosphereIonosphere - the lower region of the - the lower region of the thermosphere.thermosphere.- - ExosphereExosphere – above the thermosphere where the – above the thermosphere where the earth’s atmosphere blends in with space.earth’s atmosphere blends in with space.
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