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Atmosphere
| Term | Definition |
|---|---|
| Nitrogen | makes up 78% of the atmosphere |
| Oxygen | makes up 21% of the atmosphere |
| Air Density | The amount of mass in a given volume of air. |
| Mixture of Other Gases | makes up 1% of the atmosphere |
| Troposphere | The layer of the atmosphere nearest the surface of the Earth is the troposphere. This where the gases are the densest and where most of the overall mass of the atmosphere is found. Almost all weather happens in this area. |
| Stratosphere | The layer above the troposphere is called the stratosphere. This is where the ozone layer is found. The stratosphere is where most airplanes fly and where weather balloons rise before they burst. |
| Mesosphere | The mesosphere is the coldest of the layers. Temperatures in its outer limits known as the mesopause can reach as low as -90°C. This is the layer of the atmosphere where most small meteors burn up and are seen on Earth as shooting stars. |
| Thermosphere | This layer of the atmosphere is the first to be exposed to the Sun's radiation and is the hottest. The thermosphere also contains an area of charged atoms and molecules known as the ionosphere. |
| Exosphere | At the very outermost region of the Earth's atmosphere, gases become very thin. Earth's gravity is unable to hold onto them and they begin to escape into outer space. Because of this, there is not a true outer limit to the exosphere. |
| Atmospheric Density | air closer to surface is denser, air higher up in altitude is thinner, What is most dense sinks! |
Created by:
KoolAidMan11
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