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| a convergent boundary with 2 continents have come together and are welded into a single , larger continent |
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| A hypothesis that Earth's continents move on Earth's surface |
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| a boundary between 2 plates that are moving towards each other |
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| ancient core of a continent, which is tectonically stable |
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| long, narrow steep-sided trough that runs parallel to continental margins or to volcanic island chains |
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| a boundary between 2 lithospheric plates that are moving apart |
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| process by which heat from earth's inner and outer cores is transferred through the mantle |
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| long chain of mountains with a central rift valley that is located along a divergent boundary on the ocean floor |
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| hypothetical landmass consisting of all the continents welded together; existed about 250 million years ago |
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| theory that the lithosphere is made of plates that move and interact with each other at their boundaries |
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| force that is exerted by cooling, subsiding rock on the spreading lithospheric plates at a mid-ocean ridge |
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| crack or opening in Earth's crust |
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| deep valley at a point where lithospheric plates are moving apart, such as at a mid-ocean ridge |
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| force at a subduction boundary that the sinking edge of the subducting plate exerts on the rest of the plate |
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| convergent boundary where an oceanic plate is plunging beneath another, overriding plate |
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| large block of lithospheric plate that has been moved, often over a distance of thousands of kilometers and attached to the edge of a continent |
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| boundary between 2 plates that are sliding past each other |
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