Atmosphere.

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Presentation transcript:

Atmosphere

ATMOSPHERE Atmosphere- the air that surrounds the Earth. A mixture of gases that surrounds the Earth 2 abundant (plentiful) gases- Nitrogen (78% of the atmosphere) Oxygen (21% of the atmosphere) Other (1%)

ALTITUDE Altitude- elevation above sea level. The higher into the atmosphere, the higher the altitude. Pressure- amount of force pushing on a surface. Pressure DECREASES the higher the altitude Temperature- how warm or cold the area is. Temperature varies through each layer. Density- the amount of mass per volume. Density DECREASES the higher the altitude

The atmosphere is divided into 4 layers due to temperature change in each layer.

4 Layers of the Atmosphere Troposphere- the area we live, where all weather happens. Stratosphere- Jets fly in this area, ozone layer here absorbing ultraviolet radiation for the sun. Mesosphere- Meteoroids burn up here. Thermosphere- layer that reaches outer space. VERY HOT, because energy from the sun hits here first. The thermosphere is divided into two parts Ionosphere- brilliant light displays (aurora borealis) happen here due to the particles from the sun interaction with the oxygen and nitrogen Exosphere- satellites can orbit here.