2 ATMOSPHEREAtmosphere- the air that surrounds the Earth. A mixture of gases that surrounds the Earth2 abundant (plentiful) gases-Nitrogen (78% of the atmosphere)Oxygen (21% of the atmosphere)Other (1%)
3 ALTITUDEAltitude- 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 altitudeTemperature- 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
4 The atmosphere is divided into 4 layers due to temperature change in each layer.
5 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 partsIonosphere- brilliant light displays (aurora borealis) happen here due to the particles from the sun interaction with the oxygen and nitrogenExosphere- satellites can orbit here.