Earth Science Ch 7 Sec 3
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7 terms
Terms | Definitions |
|---|---|
 Plate Tectonics | the theory that explains how large pieces of the earth's outer most layer (tectonic plates) move and change shape |
| convergent boundary | a plate boundary where two plates move toward each other - new sea floor forms - continental/continental, continental/oceanic, oceanic/oceanic |
| divergent boundary | A plate boundry where two plates move away from each other - Mid-ocean ridges are most common |
| transform boundary | the boundary between tectonic plates that are sliding past each other horizontally - san andreas fault |
| can earthquakes occur at all types of boundary's? | yes |
| what are the 3 possible causes of plate tectonic motion? | Ridge Push, convection, slab pull |
| how is the the speed of tectonic plate movement measured? | in centimeters/year - scientists use GPS to measure. |
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