Continental Drift Theory

Front

What is Continental Drift Theory?

Back

A scientific theory that explains how continents have moved over geological time, suggesting that they were once joined together and have since drifted apart.

Front

Who proposed the Continental Drift Theory?

Back

Alfred Wegener.

Front

What is convection in the context of the Earth's mantle?

Back

A process of heat transfer where warmer, less dense material rises and cooler, denser material sinks, causing the movement of tectonic plates.

Front

What are the two types of Earth's crust?

Back

Continental crust and oceanic crust.

Front

What type of evidence did Alfred Wegener use to support his theory?

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Evidence from landforms, fossils, and climate.

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What type of evidence was NOT used by Alfred Wegener?

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Evidence from human remains.

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What is a scientific theory?

Back

A carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, bringing together many facts and hypotheses.

Front

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

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

Front

What role do tectonic plates play in Continental Drift Theory?

Back

Tectonic plates are large sections of the Earth's crust that move and interact, causing continents to drift.

Front

What is the asthenosphere?

Back

A semi-fluid layer of the Earth's mantle that allows tectonic plates to move.