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Inside the Earth

TermDefinitionnull
CRUST The crust is 5 to 100km thick. It is the thinnest layer of the earth.
MANTLE The mantle is much thicker than the crust and contains most of the earths mass. The layer of rock between the earths crust and core
CORE The Central part of the earth below the mantle.
Lithosphere The solid outer layer of the earth that consist of the crust and the rigid upper part of the mantle.
Asthenosphere The soft layer of the mantle on which the tectonic plates move.
Mesosphere The strong. Lower part of the mantle between the asthenosphere and the outer core.
TECTONIC PLATES A block of lithosphere that consist of the crust and the rigid outermost part of the mantle.
CONTINENTAL DRIFT
The hypothesis that states that the continents once formed a single landmass broke up and drifted to their present locations.
SEA FLOOR SPREADING
The process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies.
PLATE TECTONICS The theory that explains how large pieces of the earths outermost layer called tectonic plates move and change shape.
CONVERGENT BOUNDARY The boundary formed by the collision of two lithospheric plates.
DIVERGENT BOUNDARY The boundary between two tectonic plates that are moving away from each other.
TRANSFORM BOUNDARY The boundary between tectonic plates that are sliding past each other horizontally.
COMPRESSION Stress that occurs when forces act to stretch an object.
FOLDING The bending of rock layers due stress.
FAULT A break in a body of rock along which one block slides relative to another.
UPLIFT The rising of regions of the earths crust to lower elevations.
SUBSIDENCE The sinking of regions of the earths crust to lower elevations.
TENSION Stress that occurs when forces act to stretch an object.
Created by: Corbin.mooney
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