Question

Fracture zones are cracks on the ocean floor that horizontally offset mid-ocean ridges. Fracture zones typically run perpendicular to mid-ocean ridges. The diagram below shows two tectonic plates moving apart. One plate is dark blue, and the other is light blue. Several fracture zones are shown at places where parts of the same tectonic plate are moving in the same direction but at different speeds.



The study of the location of fracture zones has provided evidence to support the theory of plate tectonics because
A.
fracture zones indicate the locations of once-active underwater faults.
B.
fracture zones indicate that tectonic plates are always stationary.
C.
fracture zones prevent subduction at ocean trenches.
D.
fracture zones allow old, oceanic crust to be subducted by continental crust.

Answer 1

The correct answer is:

A. fracture zones indicate the locations of once-active underwater faults.

Fracture zones serve as evidence for the movement of tectonic plates and provide insights into the history of tectonic activity, including past fault lines where significant geological activity occurred.