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| a german meteorologist who thought that the fit of the continents |
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| Wegners hypothesis that all continents were once connected |
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| large landmass that was composed of all the continents joined together |
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| a reptile fossil found in South America and Africa |
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| a plant fossil found in Australia, India, Antarctica, Africa |
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| Hess's theory that new seafloor is formed when magma is forced upward |
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| 1968, ship allowed scientists to drill into the seafloor |
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| to detect magnetic fields, so scientists could find rocks at the bottom of the ocean |
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| theory that earth's crust and upper mantle are broken into plates that "float" around the mantle. |
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| a large section of earths oceanic crust and upper mantle. |
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| rigid layer of Earth about 100 km thick made of the crust |
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| plastic-like layer of earth on which the lithosphere plates float and move around |
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| The boundary between two plates that are moving apart |
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| when two plates move together |
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| where oceanic plates margin in being pushed under a continental plate |
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| where two plates slide against each other in a sideways motion |
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| entire cycle of heating, rising, cooling, and sinking |
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| when the force grabs onto eachother in opposite sides |
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| a pressure that attempts to flatten a material |
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