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7 Cards in this Set
- Front
- Back
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continental drift
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states that the continents had moved from a single landmass called Pangaea; by Wegner
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Pangaea
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"all lands"; single landmass
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Panthalassa
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"all seas"; surrounding Pangaea
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Mesosaurus
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a small extinct land reptile that lived 270 million yrs ago; was found in both eastern America and western Africa
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Mid-Atlantic Ridge
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a very long narrow elevation on the ocean floor that runs all the way from Iceland in the North Atlantic to Bouvet Island in the South Atlantic
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Mid-ocean ridges
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65,000 km; system of undersea mountain ranges that wind around the earth
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seafloor spreading
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movement discovered by geologist Robert Dietz; ocean floor moving along with cont.; proved Wegener's hypothesis
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