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weather part 1 vocab
| Term | Definition |
|---|---|
| Mesosphere | Middle layer of the at;51-85 km coldest layer this is where metors burn up |
| Air pressure | The measure of the force with which air molecules on a surface |
| Altitude | Elevation height above sea level |
| Troposphere | lowest layer of earths atmosphere 0-17 km above earth surface site of weather ,orgamisms,contains most atmospheric water vapor |
| stratosphere | 2nd layer of atmosphere extends from 10 to 30 miles up location of ozone layers absords 95% of ultraviolet radation tempature |
| 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 1% is carbon dioxide, water vapor and other gasses |
| Nitrogen (N2) | most abundant gas in the atmosphere (78%) |
| Oxygen (O2) | gas that makes up 21% of the air in Earth's atmosphere. It passes into the bloodstream at the lungs and travels to all body cells |
| Carbon Dioxide (CO2) | a greenhouse gas: a gas that absorbs and radiates heat |
| Trace Gases | gasses such as hydrogen, helium, carbon dioxide and argon that exist in very small quantities in the atmosphere; gases that make up less than 1% of Earth's atmosphere |
| Water Vapor | water in the form of a gas |
| Fossil Fuels | a natural substance formed from the buried remains of ancient organisms that can be used as a source of energy |
| Greenhouse Gases | gasses in Earth's atmosphere that trap heat near the surface |
| Water Cycle | the continuous process by which water moves from Earth's surface to the atmosphere and back |
| Evaporation | the change of a substance from a liquid to a gas |
| Condensation | the change from evaporation of water from the leaves of a plant a gas to a liquid |
| Precipitation | any form of water that falls from clouds and reaches Earth's surface (rain or snow or hail or sleet or mist) |
| Transpiration | evaporation of water from the leaves of a plant |
| Crystallization | the process by which a substance becomes a solid, sort of like freezing |
| Surface Runoff | water that flows over land until it reaches lakes, rivers, or other areas |
| Groundwater Flow | water that is flowing beneath Earth’s surface |
| Dew | water that has condensed on a cool surface overnight from water vapor in the air |
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