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The Atmosphere

A short presentation describing the layers of the earth's atmosphere.
by

Katherine LaCommare

on 15 October 2012

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Transcript of The Atmosphere

The first layer is the troposphere. The troposphere contains 78% nitrogen and 21% oxygen. The remaining 1% is made up of carbon dioxide, argon, water vapor, methane, ozone etc. The bottom of the stratosphere contains a concentrated layer of ozone.

Ozone is formed when UV light interacts with oxygen.

It is considered a "global sunscreen" because it "filters" out harmful UV radiation. The stratosphere
is the next layer. Notice the temperature. In the stratosphere, the temperature increases. The earth is surrounded by a thin blanket of gases that can be divided into several spherical layers.

The figure on the right illustrates these layers from the bottom to the top. The top two layers are the thermosphere and mesosphere. Air currents, water vapor, wind and the concentration of gases in this layer control the weather and climate that we feel on earth. Notice what happens to temperature in this layer. The temperature is warmer near the earth and cooler near the top.
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