Deep-ocean trenches are found predominantly along the perimeter of the
A) Indian Ocean.
B) Pacific Ocean.
C) Atlantic Ocean.
D) Arctic Ocean.

Question

Quizplus · Accepted Answer

Deep-ocean trenches are found predominantly along the perimeter of the Pacific Ocean, known as the Ring of Fire. This is due to the convergence of tectonic plates, where one plate subducts beneath the other, creating deep trenches where the oceanic lithosphere is forced downward into the mantle. While there are some trenches in other oceans, they are not as numerous as those found in the Pacific.

Deep-Ocean Trenches Are Found Predominantly Along the Perimeter of the