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10 Cards in this Set
- Front
- Back
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Continental Drift
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How the continents moved slowly to their current locations
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Pangaea
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A large supercontinent of landmass
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A Controversial Idea
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Wegener's ideas were controversial that all the continents were once a Pangaea
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Fossil Clues
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The fossils left from the dinosoars suggest that once the dinosoars could have went to another continent easily
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A Widespread Plant
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The plant Glossopteris has been found in Africa, Austrailia, India, South America, and Antarctica.
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Climate Clues
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Fossils of warm-weathered plants were found around the Arctic Ocean. There might have been a Pangaea that had on warm climate
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Rock Clues
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Similar rock structures were found on different continents, so the might have been a Pangaea that broke apart.
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Seafloor Spreading
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Hot, less-dense material below the Earth's crust rises moving the mid ocean ridges.
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Evidence For Spreading
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Old rocks found at the bottom of the ocean were getting younger age as they get closer to ridges, suggesting the continents moved apart
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Magnetic Clues
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Scientists made a suggestion that Earths magnetic field changes directions in the past, that are recorded in mid oceas ridges
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