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Layers Of The Earth

Unit 3 vocab. Addison

TermDefinition
Seismic Waves a wave of energy that is generated by an earthquake or other earth vibration and that travels within the earth or along its surface.
Pressure the exertion of force upon a surface by an object, fluid, etc., in contact with it:
Crust the outer layer of the earth, about 22 miles (35 km) deep under the continents
Basalt the dark, dense igneous rock of a lava flow or minor intrusion, composed essentially of labradorite and pyroxene and often displaying a columnar structure.
Granite a coarse-grained igneous rock composed chiefly of orthoclase and albite feldspars and of quartz, usually with lesser amounts of one or more other minerals, as mica, hornblende, or augite
Mantle the portion of the earth, about 1800 miles(2900 km) thick, between the crust and the core.
Lithosphere the crust and upper mantle of the earth
Asthenosphere the region below the lithosphere, variously estimated as being from fifty to several hundred miles (eighty-five to several hundred kilometers) thick
Outer Core The core that has molten rock as its comosition and is the third closet to the surface.
Inner Core The final layer in the earth. It contains extreme heat and pressure. Its compisition is Iron and Nickel.
Created by: Little Mill
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