Earth’s Atmosphere ew/assetGuid/795D88AC-CDC A46-8AE2D4D222BB

Troposphere  Lowest layer 6-10 miles high  We live in this layer  6-10 miles from Earth  Weather, wind, clouds, Jet stream Jet stream

Stratosphere  miles high  Includes ozone layer to protect life  Slows radiation  Higher temperature than troposphere troposphere

Mesosphere  30 to 50 miles high  Colder than Stratosphere  Meteors disintegrate in this layer this layer

Thermosphere  miles high, thin ozone layer  2000 degrees C.  Also called Ionosphere, atoms have electrical atoms have electrical charges. charges.

Ionosphere - Exosphere  350 to 400 miles high. Unstable molecules escape into space where our satellites orbit the Earth

The Big Picture  Why do we care that the earth has different layers?  Zer4 Zer4 Zer4  ine_content/animations/sun_to_earth.html ine_content/animations/sun_to_earth.html ine_content/animations/sun_to_earth.html

Convection  Convection is the transfer of heat by the actual movement of the heated material.  Convection Currents are what causes weather

Resource/Exploration Five Layers : mosphere/index.html m

Resource/Exploration  Convection: onmentalScience/course%20files/multimedi a/lesson21/animations/2d_Air_Movement.ht ml onmentalScience/course%20files/multimedi a/lesson21/animations/2d_Air_Movement.ht ml onmentalScience/course%20files/multimedi a/lesson21/animations/2d_Air_Movement.ht ml