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weather part1 vocab
| Question | Answer |
|---|---|
| air pressure | the measure of the force with which air molecules push on a surface |
| altitude | elevation above sea level |
| troposphere | lowest layer of earths ;0-17 km above earths surface ,site of weather,organisms ,contains most atmosphere |
| (switched sides )2nd layer of atmosphere ;extends from 10 to 30 miles up ;location of ozone layer ;absorbs 95% of ultraviolet radiation ;temperature increases with altitude | stratosphere |
| 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 make up 78% ,21% oxygen,,and remaining 1% is carbon dioxide,water vapor and other gases |
| nitrogen | most abundant gas in the atmosphere 78% |
| oxygen 02 | gas that makes up 21% of the air in earths atmosphere.it passes into the bloodstream at the lungs and travels to all body cells |
| carbon dioxide | 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 earths 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 | gasses in the Earth's atmosphere that trap heat near the surface 16.Water Cycle - the continuous process by which water moves from Earth's surface to the |
| water cycle | Earth's atmosphere that trap heat near the surface |
| condensation | the change from a gas to a liquid |
| evaporation | the change of a substance from a liquid to a gas |
| 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. |
| mesosphere | middle layer of the atmosphere; 51-85 km above Earth’s surface; coldest layer, this is where meteors burn up |
| surface runoff | water that is flowing beneath Earth’s surface |
| dew | water that has condensed on a cool surface overnight from water vapor in the air |
| frost | ice formed when water vapor changes directly into ice crystals |
| ozone layer | part of Earth's upper atmosphere; it protects people by absorbing harmful rays from the sun. |
| greenhouse effect | a warming of Earth's surface and the air above it. It is caused by gasses in the air that trap energy from the Sun |
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