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19 Cards in this Set
- Front
- Back
Crust |
the thin and solid outermost layer of the Earth above the mantle |
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Mantle |
the layer of rock between the Earth's crust and core |
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Core |
the central part of the Earth below the mantle |
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Lithosphere |
the solid outer layer of the Earth that consist of the crust and the rigid upper part of the mantle |
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Ashenosphere |
the soft layer of the mantle on which the tectonic plates move |
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Mesosphere |
the strong lower part of the mantle between the ashenosphere |
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Tectonic plate |
a block of lithosphere that consists of the crust and the rigid outermost part of the mantle |
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Continental drift |
the hypothesis that states that the continents once formed a single landmass, broke up , and drifted to their present locations |
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Sea-floor spreading |
the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies |
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Plate tectonics |
the theory that explains how large pieces of the Earth's outermost layer ,called tectonic plates, move and change shape |
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Convergent boundary |
the boundary formed by the collision of two lithosphere plates |
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Divergent boundary |
the boundary between tectonic plates that are moving away from each other |
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Transform boundary |
the boundary between tectonic plates that are sliding past each other horizontally |
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Compression |
stress that occurs when forces act to squeeze an object |
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Tension |
stress that occurs when forces act to stretch an object |
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Folding |
the bending of rock layers due to stess |
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Fault |
a break in a body of rock along which one block slides relative to another |
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Uplift |
the rising of regions of the Earth's crust t higher elevations |
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Subsidence |
the sinking of regions of the earth's crust to lower elevations |