The mid-ocean ridges are elevated above the surrounding sea floor because ________.
A)ridge rocks are hot and therefore have relatively low density
B)the lithosphere is thickest at the ridges so they stand up taller
C)rising ocean currents create a vacuum that pulls ridges up
D)ridge rocks are mafic,which are less dense than ultramafic ocean basin rock

Question

Quizplus · Accepted Answer

The mid-ocean ridges are elevated because the rocks there are hot and have a relatively low density, causing them to be buoyant and rise above the surrounding cooler, denser sea floor.

The Mid-Ocean Ridges Are Elevated Above the Surrounding Sea Floor