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9 Cards in this Set
- Front
- Back
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Continental Drift
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States that the continents had moved.
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Pangaea
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"all lands"; the continents were part of one single land mass
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Panthalassa
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the giant body of water that surrounded Pangaea
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Mesosaurus
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a small and extinct reptile that lived 270 million years ago
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Mid-Atlantic Ridge
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an undersea range with a steep, narrow valley running down into the center
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Mid-Ocean Ridge
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65,000 km long that wind their way around the earth
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Seafloor Spreading
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as the ocean floor moved away from the ridge, it was replaced by rising magma that cooled and solidified into new rock
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Normal Polarity
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magnetic materials in newly formed rock orient towards magnetic north
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Reverse Polarity
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magnetic materials in newly formed rock orient to magnetic south
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