Question

Based on the diagram, which process explains how mid-ocean ridges are formed?

A. Less dense, hot magma rises to the surface to displace more dense, cooler magma, pushing the plates toward each other.

B. Convection currents in the core push the plates away from one another

C. Radiation from the sun cracks the lithosphere into pieces that drift apart

D. Less dense, hot magma rises to the surface to displace more dense, cooler magma, pushing the plates away from each other.

Answer 1

Answer: Based on the information given, the correct answer is D.

Explanation: Mid-ocean ridges are formed by a process called seafloor spreading, which occurs at divergent plate boundaries. At these boundaries, less dense, hot magma rises to the surface from the mantle and then cools to form new crust. As new crust is formed, it pushes the existing crust away from the ridge and toward the subduction zones. This process creates a continuous chain of volcanic ridges that runs through the middle of the world's oceans.