4
QuizMultiple Choice

Earth's Crust and Mantle — Quiz

Question 4 • Earth and Space Science

Which statement best explains why oceanic-oceanic collisions do not form high mountains like continental-continental collisions?

Answer
A
Ocean currents and waves keep eroding the mountains.
B
Oceanic crust is too thin and dense to uplift.
C
Oceanic plates float higher on the mantle.
D
Oceanic crust is too thick to form a mountain.

Explanation

Oceanic crust is thinner and denser than continental crust, so when two oceanic plates collide, one usually sinks beneath the other in a process called subduction. This creates features such as deep trenches and volcanic island arcs rather than the large uplifted mountain ranges formed when buoyant continental crust collides. Therefore, the best choice is “Oceanic crust is too thin and dense to uplift.”

AI-written and checked against the verified answer.

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