Do Now - 12/13 - Science - Test Review

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What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates collide or come together.

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What is a divergent boundary?

Back

A divergent boundary is where two tectonic plates spread apart or move away from each other.

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What is seafloor spreading?

Back

Seafloor spreading is the process that occurs at a divergent oceanic boundary, creating new oceanic crust.

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Who proposed the theory of continental drift?

Back

Alfred Wegener proposed the theory of continental drift.

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Why was Wegener's theory of continental drift initially rejected?

Back

Wegener's theory was rejected because he had no proof of how the continents were moving.

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What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other horizontally.

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What is subduction?

Back

Subduction is the process where one tectonic plate moves under another plate and sinks into the mantle.

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What is the significance of tectonic plate movement?

Back

Tectonic plate movement is responsible for earthquakes, volcanic activity, and the formation of mountains.

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What is continental drift?

Back

Continental drift is the theory that continents have moved over geological time and were once joined together.

Front

What evidence supports the theory of continental drift?

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Evidence includes the fit of the continents, fossil distribution, and geological similarities across continents.