Plate Tectonics
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| the theory that the Earth's lithosphere is divided into tectonic plates that move around on top of the asthenosphere | plate tectonics
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| the boundary between two colliding tectonic plates | convergent boundary
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| the region where an oceanic plate sinks down into the asthenosphere at a convergent boundary, usually between continental and oceanic plates | subduction zone
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| the boundary between two tectonic plates that are moving away from each other | divergent boundary
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| the boundary between two tectonic plates that are sliding past each other horizontally | transform boundary
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| the amount of force per unit area that is put on a given material | stress
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| the type of stress that occurs when an object is squeezed | compression
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| the type of stress that occurs when forces act to stretch an object | tension
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| the bending of rock layers due to stress in the Earth's crust | folding
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| a break in the Earth's crust along which blocks of the crust slide relative to one another due to tectonic forces | fault
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| a fault in which the hanging wall moves down relative to the footwall | normal fault
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| a fault in which the hanging wall moves up relative to the footwall | reverse fault
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| a fault in which the two fault blocks move past each other horizontally | strike-slip fault
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