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Weather part 1 vocab
| Term | Definition |
|---|---|
| Air Pressure | the measure of the force with which air molecules push on a surface |
| Altitude | elevation (height) above sea level |
| Troposphere | lowest layer of Earths atmosphere, 0-17 km above Earths Surface, site of weather, organisms, contains most atmospheric water vapor |
| Stratosphere | 2nd layer of atmosphere; extends from 10 to 30 miles up;location of ozone layer, absorbs 95% or ultraviolet radiation; temperature increases with altitude increase |
| Thermosphere | the fourth layer of the atmosphere, in which temperature increases as altitude increases |
| Exosphere | the outer layer of the Thermosphere, extending outward into space |
| Atmospheric Gases | nitrogen makes up 78%,21% oxygen, and remaining carbon dioxide, water vapor and other gases |
| Nitrogen N2 | most abundant gas in the atmosphere 78% |
| Oxygen O2 | gas that makes up 78% of the air in the Earths atmosphere |
| Carbon dioxcide CO2 | a greenhouse gas: a gas that abosorbs and radiates heat |
| Trace Gases | gasses such as hydrogen, helium and carbon dioxide and argon that exist in very small quantities in the atmosphere, gases that makes up 1% of earths atmosphere |
| Water Vapor | water in the form of gas |
| Fossil fuels | A natural substance found in acient remained that can be used as a source of energy |
| Greenhouse Gases | gasses in earths atmosphere that trap heat near the surface |
| Water cycle | a continuous cycle when water goes up nto the atmosphere and back |
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