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9 Cards in this Set
- Front
- Back
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Who is the scientist that introduced continental drift and when?
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Alfred Wagner, 1912
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Pangaea
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idea that all land masses used to exist as one superior content
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Continental Drift
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Over 200-350 million years ago the land mass broke up and moved to their present locations.
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what was the condition of the theory of continental drift in 1930?
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his ideas were controversial and not accepted till after he was dead
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why didn't people believe Wagner's theory
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Wagner had trouble explaining why the continents move- suggested because earth was spining on ts axis
Physicists and gelologists didnt believe because they didn't understand how Wagner, a meteorologist could explain how continents could move |
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Evidence for continental drift
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The continents looked like they could fit together like puzzle pieces, fossil clues, mountain ranges such as the Applachines
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name the four fossils
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thecodont, cynognathus, lustrosaurus, labyrinthodont, kannemeyerid
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name and describe the seed that was found.
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glossopteris- fossils in Australia, South America, Africa, India, Antarctica too large to be carried by wind and tooo fragile to be carried by sea
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name and describe the reptile fossil that was found
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Mesosaurus, a small freshwater reptile, -Africa and South America
no way it could have swam across the Atlantic Ocean |
