Plate Tectonics STAAR Review

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What is a divergent plate boundary?

Back

A divergent plate boundary is where two tectonic plates move apart from each other, often creating new crust as magma rises to the surface. This type of boundary is commonly found in oceanic regions, such as the Mid-Atlantic Ridge.

Front

What geological feature is formed at a divergent boundary in the ocean?

Back

A Mid Ocean Ridge is formed at a divergent boundary in the ocean, where tectonic plates are moving apart.

Front

What is a convergent plate boundary?

Back

A convergent plate boundary is where two tectonic plates collide or move towards each other, often resulting in one plate being forced beneath the other, leading to subduction.

Front

What geological feature is commonly associated with convergent boundaries?

Back

Subduction zones and mountain ranges are commonly associated with convergent boundaries.

Front

What is a transform plate boundary?

Back

A transform plate boundary is where two tectonic plates slide past each other horizontally, causing friction and earthquakes.

Front

What happens at a transform boundary?

Back

At a transform boundary, tectonic plates slide past each other, which can lead to earthquakes due to the build-up of stress along the fault lines.

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What is the difference between oceanic and continental plates?

Back

Oceanic plates are denser and thinner than continental plates, which are thicker and less dense.

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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, often creating deep ocean trenches.

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What is a rift valley?

Back

A rift valley is a lowland region that forms where tectonic plates are moving apart, often found in continental areas.

Front

What is the significance of the Mid-Atlantic Ridge?

Back

The Mid-Atlantic Ridge is a divergent boundary that is significant for being the longest mountain range in the world, formed by tectonic activity.