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Earth's Atmosphere
| Term | Definition |
|---|---|
| Atmosphere | A layer of gases that surrounds Earth that protects it from the full radiation from the sun |
| Altitude | Height above sea level or the earth's surface |
| Troposphere | The lowest layer of the atmosphere. Where weather occurs! |
| Stratosphere | Second layer of the atmosphere. Ozone Layer found here |
| Ozone Layer | An invisible shield of oxygen gas found in the stratosphere. It protects life by absorbing the sun's dangerous UV rays |
| Mesosphere | Third layer of the atmosphere. Layer where meteors burn. |
| Thermosphere | 4th layer of Earth's atmosphere. Northern Lights (Aurora Borealis) occur here |
| Exosphere | The uppermost region of Earth's atmosphere as it gradually fades into the of space. Air here is extremely thin |
| Reflection | Light colors do this with with incoming radiation from the sun |
| Absorption | Dark colors do this with with incoming radiation from the sun |
| Earth's Energy Balance | The balance between the energy lost by Earth into space and the energy gained by solar radiation trapped by Earth's atmosphere |
| The Sun | The primary source of all energy on earth |
| Nitrogen | The most abundant gas in the atmosphere |
| Oxygen | The second most abundant has in the atmosphere |
| Temperature Increase | This occurs when Earth gives off LESS energy than we receive |
| Temperature Decrease | This occurs when Earth gives off MORE energy than we receive |
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