Plate Tectonics Flashcard

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What is Plate Tectonics?

Back

The theory that explains the movement of the Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere.

Front

What are tectonic plates?

Back

Large sections of the Earth's lithosphere that move and interact with each other, causing geological activity.

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What is a convergent boundary?

Back

A tectonic plate boundary where two plates collide, often forming mountains or causing earthquakes.

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What is a divergent boundary?

Back

A tectonic plate boundary where two plates move apart, often creating new crust as magma rises to the surface.

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What is a transform boundary?

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A tectonic plate boundary where two plates slide past each other horizontally, often causing earthquakes.

Front

What evidence supports the theory of Plate Tectonics?

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Fossil distribution, geological similarities across continents, and the fit of continental outlines.

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What is continental drift?

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The hypothesis that continents have moved over geological time and were once joined together.

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What is subduction?

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The process where one tectonic plate is forced under another, often leading to volcanic activity.

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What are mid-ocean ridges?

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Underwater mountain ranges formed by divergent tectonic plates where new oceanic crust is created.

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What is the significance of fossils in understanding Plate Tectonics?

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Fossils provide evidence of past environments and help trace the movement of continents.