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10 Cards in this Set

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  • Back
lithosphere
the crust and upper area of the mantle, consisting of plates
theory of plate tectonics
the idea that the earth's crust is made up of moving plates
plate boundaries
places where plates meet
earthquake
rocks along the plate boundaries shift suddenly and release stored energy causing vibrations that shake and rattle the earth's surface
faults
breaks in the earth's surface along which rocks can move
thrust or reverse fault
rocks push together until they force a section or rock upward (colliding)
normal fault
rocks move apart, a section of rock may fall between the separating rocks-this allows molten rock to form new land
strike-slip fault
rocks move horizontally past each other
focus
beginning point of an earthquake
epicenter
the point on the surface of the earth directly above the focus