How did Wegener's theory of continental drift differ from the current theory of plate tectonics?

Wegener's theory did not explain how the continents could move.
Wegener's theory did not explain how the coastlines of continents were similar.
Wegener's theory did not explain how continents' rock patterns could match.
Wegener's theory did not explain how the fossils on different continents were similar.

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The correct answer is Wegener's theory did not explain how the continents could move.

The theory given by Wegener's states that once the continents were once joined together but the continents are separated now. He was not able to tell the name of the force that made the continents apart. He did not have any explanation regarding the fact or the reason behind continental drift. The theory of plate tectonics on the other hand describes that the continents were broken down into slabs which moves as a result of movement of tectonic plates.

Wegener's theory of continental drift differs from the current theory of plate tectonics because Wegener's theory did NOT explain how the continents could move.

  • According to Wegener's theory of continental drift, continents were once joined into a single landmass called Pangaea.

  • Subsequently, Pangea broke up million years ago and different landmasses move (drifted) to form the current continents.

  • The currently accepted theory of plate tectonics differs from Wegener's theory because it indicates that the continents are in constant motion due to convection currents in the upper mantle of the Earth.

In conclusion, Wegener's theory of continental drift differs from the current theory of plate tectonics because Wegener's theory did NOT explain how the continents could move.

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