Seafloor spreading is driven by volcanic activity
A) in the middle of abyssal plains.
B) along mid-ocean ridges.
C) at the edges of continental shelves.
D) along fracture zones.

Question

Quizplus · Accepted Answer

Seafloor spreading occurs along mid-ocean ridges, where volcanic activity creates new oceanic crust that moves away from the ridge axis in both directions. This process is driven by the upwelling of magma from the mantle, which then solidifies and forms new seafloor.

Seafloor Spreading Is Driven by Volcanic Activity