The deep-ocean trenches are usually associated with
A) volcanism.
B) island arc systems.
C) earthquakes.
D) All of these are correct.
E) None of these are correct.

Question

Quizplus · Accepted Answer

Deep-ocean trenches are usually associated with volcanism, island arc systems, and earthquakes. Volcanism occurs because of the subduction of oceanic plates into the mantle. As these plates move deeper into the Earth, they heat up and the rock undergoes partial melting, leading to volcanic activity. Island arc systems are formed as a result of the subduction of oceanic plates, which causes magma to rise and form volcanic islands. Earthquakes are also associated with deep-ocean trenches, as the movement of these plates creates a lot of stress and strain, leading to seismic activity.

The Deep-Ocean Trenches Are Usually Associated with