AtmosphereThe Atmosphere

•The atmosphere is a mixture of gases and dust that surrounds a planet.

•Earth’s atmosphere is divided into FOUR layers.

http://youtu.be/1YAOT92wuD85 min Earth’s Atmosphere – surfing the air

http://youtu.be/3CerJbZ-dm07 ½ min Journey through the layers of atmosphere BBC

Atmosphere•78% nitrogen•21% oxygen•1% (argon, carbon dioxide, dust, water vapor, ash, dirt & smoke)

http://youtu.be/WaikvaAw

2nk5 m

in Layers of Atmosphere

Troposphere•All weather and life – are found in this layer.•It is a layer of mixing and changing gases.

•TROPO = change or mixing

Stratosphere•The gases found here are layered.

•The OZONE layer is located in this layer.

•It protects life on Earth from harmful UV radiation from the sun.

•STRATO = layer

Mesosphere•The middle layer of the atmosphere.•Coldest layer•Layer where meteors burn up

•Meso = middle

Coldest

Thermosphere•The outermost and the hottest layer•“Northern lights” - auroras•Thermo = heat

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