Which of the following describes how and where a trench forms in a plate tectonic setting?

A.

A trench results from subduction and forms in the volcanic arc on the overriding plate.

B.

A trench results from rifting and forms outside the rift on whichever plate is higher in elevation.

C.

A trench results from rifting and forms outside the rift on whichever plate is lower in elevation.

D.

A trench results from subduction and forms on the ocean floor where the two plates meet.

Question

English

Aylin Bolton

6 July, 10:11

Which of the following describes how and where a trench forms in a plate tectonic setting?

A.

A trench results from subduction and forms in the volcanic arc on the overriding plate.

B.

A trench results from rifting and forms outside the rift on whichever plate is higher in elevation.

C.

A trench results from rifting and forms outside the rift on whichever plate is lower in elevation.

D.

A trench results from subduction and forms on the ocean floor where the two plates meet.

+3

Answers (2)

Know the Answer?

Alayna Becker · Answer 1

D, a trench results from subduction and forms on the ocean floor where the two plates meet

Biablo · Answer 2

The answer here is D, A trench results from subduction and forms on the ocean floor where the two plates meet.

Explanation:

Trenches are formed through subduction, a geophysical process in which two or more of Earth's tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust to bend and form a steep, V-shaped depression.