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 from a single supercontinent called Pangaea to their current locations.

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Who proposed the Continental Drift Theory?

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Alfred Wegener proposed the Continental Drift Theory in 1912.

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What evidence did Wegener use to support his theory?

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Wegener used evidence such as the fit of continents, fossil similarities across continents, and geological features like mountain ranges.

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What is Pangaea?

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Pangaea was a supercontinent that existed around 335 million years ago, where all continents were joined together.

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Why did scientists initially reject Wegener's theory?

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Scientists rejected Wegener's theory because he could not explain how the continents moved.

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What are Glossopteris fossils?

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Glossopteris fossils are remains of an ancient plant that provide evidence for continental drift, as they have been found on multiple continents.

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What role do glacier scars play in supporting the Continental Drift Theory?

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Glacier scars show that glaciers once covered areas that are now warm, indicating that continents have moved from different climates.

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How do mountain ranges support the idea of continental drift?

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Mountain ranges that line up across continents suggest that those continents were once connected.

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What is plate tectonics?

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Plate tectonics is the scientific theory that describes the large-scale movements of Earth's lithosphere, which includes the movement of continents.

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What is the significance of fossil evidence in the Continental Drift Theory?

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Fossil evidence shows that similar species existed on continents that are now separated by oceans, supporting the idea that they were once connected.