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Definition
| the theory that the lithosphere is made of plates that move and interact with each other at their boundaries |
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| a hypothesis that earth"s continents move on earth"s surface |
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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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| a boundary between two lithosphere that are moving apart |
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| a deep valley at a point where lithosperc plates are moving aparty such as at a mid ocean ridge |
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| a crack or opening in the earths crust |
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| a boundary between 2 plates |
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| a convergent boundary where an oceanic plate is plnging beneath another overriding plate |
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| a long narrow steepsided trough that runs parallel to continental margins or to volcanic chains |
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| when 2 continents come together and weld together to form one larger continent |
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| 2 plates sliding by each other |
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| when heat from the inner and outer core is traveled through the mantle |
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Definition
| all the continents are welded together |
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| the ancient cave of a continent which is tectonically stable |
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| a large block of lithospheric plate that has moved |
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| the outer shell of the earth consisting of the crust and the upper most portion of the mantle |
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Definition
| the partially melted portion of the mantle |
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Definition
| an opening in earth's crust through that molten rocks, gasses, and ash erupt |
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Definition
| an area of volcanic activity |
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| break in the lithosphere in which movement has occurred |
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| the point at which the first movement occurs during an earthquake |
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| intrument that detects and records earthquake waves |
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| a downfold in rock layers |
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| the point on earths surface directly above the focos of an earthquake |
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