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| A convergent boundary where two 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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| The ancient core of a continent, which is tectonically stable. |
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| Long trench that is the deepest part of the ocean |
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| A boundary between two lithospheric plates that are moving apart. |
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| A process by which heat from Earth's inner and outer cores is transferred through the mantle. |
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| A long chain of mountains with a central rift valley that is located along a divergent boundary on the ocean floor |
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| The name of a hypothetical landmass consisting of all the continents welded together, which evidence indicates existed about 250 million years ago. |
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| The theory that the lithosphere is made of plates that move and interact with each other at their boundaries. |
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| A force that is exerted by cooling, subsiding rock on the spreading lithospheric plates at a mid-ocean ridge. |
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| a boundry between two plates that are moving twords each other or converging |
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| a crack or opening in the earths crust |
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| a deep valley at a point where the lithosperic plates are moving apart such as at the mid ocean ridge |
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| a force of subduction boundry that the sinking edge of the subducting plate exerts on the rest of the plate |
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| a convergant boundry where oceanic plates plunge over an overiding plate |
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| a large block of plate that has been moved thousands of kilometers and attaches to an edge of an continent |
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| a boundary from two plates that slide past each other |
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