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12th Grade Seafloor Spreading Quizzes , Questions & Answers

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Subduction Zones Quiz: Recycling Earth's Crust

This assessment explores subduction zones, focusing on their role in recycling Earth's crust. It evaluates understanding of tectonic processes, plate interactions, and geological implications. Engaging with this material...

Questions: 15 | Attempts: 19 | Last updated: Mar 20, 2026

Sample Question 1
What is a subduction zone, and what type of plate boundary is it associated with?

A region where two continental plates collide and crust folds upward

A convergent plate boundary where dense oceanic crust sinks beneath another plate into the mantle

A divergent boundary where oceanic crust splits and magma fills the gap

A transform boundary where plates slide horizontally past each other

Sample Question 2
At a subduction zone, the older, denser oceanic plate always sinks beneath the younger, more buoyant plate regardless of whether it is oceanic or continental.

True

False

Sample Question 3
What is the subducting slab, and what happens to it as it descends into the mantle?

The overlying plate that rides over the subducting oceanic crust

The layer of sediment scraped off at the trench and added to the overriding plate

The descending oceanic lithosphere that is progressively heated and eventually assimilated into the mantle

The magma generated at depth that rises through the overriding plate

12th Grade Seafloor Spreading Quizzes , Questions & Answers

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