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Dynamic Earth
chapter 3 vocabulary
| Term | Definition |
|---|---|
| Geosphere | mostly solid, rocky part of the earth. extends from the center of the core to the surface of the crust |
| Crust | thin and solid outermost layer of the earth above the mantle |
| Mantle | layer of rock between the earths crust and core |
| Core | central part of the earth below the mantle, also the center of the sun. |
| Lithosphere | solid, outer layer of the earth that cosists of the crust and the rigid upper part of the mantle |
| Asthenosphere | solid, plastic layer of the mantle beneath the lithosphere. made of mantle rock that flows very slowly which allows tectonic plates to move on top of it |
| Tectonic Plate | block of lithosphere that consists of the crust and the rigid outermost part of the mantle |
| Erosion | process in which materials of the earths surface are loosened, dissolved, or worn away and transported from one place to another by natural agent, such as wind, ice, water, or gravity |
| Atmosphere | mixture of gases that surrounds a planet, such as earth |
| Troposphere | lowest layer of the atmosphere in which temp. drops ata constant rate as altitiude increases. part of atmopshere where weather conditions exist. |
| Stratosphere | layer of atmosphere that lays between thr troposhere and the mesosphere and in which temp. increases as altitude increases, contains the ozone layer |
| Ozone | gas molecule that is made up of three oxygen atoms. |
| Radiation | energy that is transferred as electromagnetic waves such as visible light and infrared waves |
| Conduction | transfer of energy as heat through a material |
| Convection | movement of matter due to differences in density that are caused by temp.variations can result in the transfer of energy as heat |
| Greenhouse Effect | warming of the surface and lower atmosphere of earth that occurs when carbon dioxide ,water vapor, and other gases in the air absorb and reradiate infrared radtiation |
| Water Cycle | continuious movement of water between the atmosphere the land and the oceans |
| Evaporation | change of state from a liquid to a gas |
| Condensation | change of state from a gas to a liquid |
| Precipitation | any form of water that falls to the earths surface from the clouds. rain snow sleet hail |
| Salinity | measure of the amount of dissolved salts in a given amount of liquid. |
| Fresh Water | water that contains insignificant amounts of salts, as in rivers and lakes |
| Biosphere | part of earth where life exists. |
Created by:
susierose
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