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10 Cards in this Set

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spreading centers


areas where the tectonic plates are moving apart

plate Tectonics

The study of the formation and movement of the earth's plates



sliding boundaries

where two plates are sliding past each other, the San Andreas is an example


lithosphere


the portion of the crust and the upper mantle that makes up the tectonic plates


converging boundary


where two plates move toward each other


continental drift


the theory that the continents were once one large land mass and it broke into pieces that moved apart


asthenosphere


the layer within the mantle that the tectonic plates rest on


collision boundary


where two plates crash into each other


fault


a break or crack Earth's crust along which movement has occured


subduction boundary


converging boundary where one plate sinks below another overriding plate