Continental Drift Theory

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What is the Continental Drift Theory?

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The Continental Drift Theory is the idea that continents have moved over geological time and were once joined together in a single landmass called Pangaea.

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Who proposed the theory of continental drift?

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Alfred Wegener proposed the theory of continental drift.

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What is Pangaea?

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Pangaea was a supercontinent that existed about 175 million years ago, which began to break apart into the continents we know today.

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What are striations?

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Striations are scratches or grooves in rocks caused by the movement of glaciers.

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Why was the Continental Drift Theory initially rejected?

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It was initially rejected because scientists did not know the force responsible for moving the continents.

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What evidence supports the Continental Drift Theory?

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Evidence includes the fit of continental coastlines, fossil similarities across continents, and geological similarities.

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What are tectonic plates?

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Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other, causing geological activity.

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What is the significance of the Appalachian Mountains in relation to continental drift?

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The Appalachian Mountains match well with mountains found in the British Isles, suggesting they were once part of the same landmass.

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What role do fossils play in supporting the Continental Drift Theory?

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Fossils of the same species found on different continents suggest that these continents were once connected.

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What is the lithosphere?

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The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.