ATMOSPHERE

ATMOSPHEREPresented By Kiran NaseemB.S V

1CONTENTSAtmosphereLayers of the atmosphereTroposphere

Stratosphere

Mesosphere

ThermosphereATMOSPHEREThe atmosphere is a thin layer of air that protects the Earths surface from extreme temperatures and harmful sun raysprovides us oxygen to breatheIt supplies the oxygen and carbon dioxide needed by living things.

Layers of the AtmosphereThe four layers of the atmosphere include: the troposphere, where we live;the stratosphere, which contains the ozone layer;the mesosphere, where meteors burn; andthe thermosphere, where satellites orbit Earth

TROPOSPHEREIt extends about 14 to 16 km from the earths surface.(closest to Earth)Tropo means Changingcontains the most water vaporweather occurs, most pollution is found Air is densest

STRATOSPHEREIt is about 50km above the earth ozone layerAir flows in horizontal direction.Jet AircraftsNo clouds in this layer

MESOSPHEREColdest region of the atmosphere.Most meteors from space burn in this layerTemperature decreases

THERMOSPHEREThe topmost part of the atmosphereHigh temperature Very thin layer, solar radiation absorbedAuroras occurs

IonosphereLower part of the thermosphereHighly ionized air, where auroras occurs

Exosphere

outer part of the thermosphereExtremely thin airSatellites orbit earth in the exosphere

Temperature in atmospheric layersThe troposphere is warmed primarily by the Earths surface; temperature decreases as altitude increases in this layer.Temperatures increase as altitude increases in the stratosphere, particularly in the upper portion ozoneTemperatures decrease with altitude in the mesosphereThermosphere and exosphere are the first to receive Suns rays, so they are very hot