Continental drift theory

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What is the continental drift theory?

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The continental drift theory posits that continents have moved slowly apart to their current locations over geological time.

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Who proposed the continental drift theory?

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Alfred Wegener proposed the continental drift theory in the early 20th century.

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What evidence supports the continental drift theory?

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Evidence includes matching fossils across continents, similar rock formations, and glacial deposits found in now-warm regions.

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What is Pangaea?

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Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras, where all continents were joined together.

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How do tectonic plates move?

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Tectonic plates move due to convection currents in the Earth's mantle, driven by heat from the Earth's core.

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What is seafloor spreading?

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Seafloor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away.

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What role do fossils play in supporting continental drift?

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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 significance of glacial grooves in the context of continental drift?

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Glacial grooves found on different continents indicate that these areas were once covered by glaciers when the continents were joined.

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What is the difference between continental drift and plate tectonics?

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Continental drift refers specifically to the movement of continents, while plate tectonics encompasses the movement of all tectonic plates, including oceanic plates.

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What is a tectonic plate?

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A tectonic plate is a massive slab of solid rock that makes up the Earth's lithosphere and moves over the semi-fluid asthenosphere.