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Plate Tectonics 2


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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


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


the layer within the mantle that the tectonic plates rest on

collision boundary

where two plates crash into each other


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

subduction boundary

converging boundary where one plate sinks below another overriding plate

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