Oceanic ridges are elevated compared to the surrounding ocean floor because ________.
A)newly formed lithosphere is hotter and therefore less dense than the surrounding rocks
B)the older, colder lithosphere is less dense and tends to rise
C)the mantle is pushing up the lithosphere along the ridge
D)of the shield volcanoes that develop due to seafloor spreading

Question

Quizplus · Accepted Answer

Newly formed lithosphere is hotter and therefore less dense than the surrounding rocks, causing it to rise and form oceanic ridges. As it cools and solidifies, it becomes denser and sinks, creating a cycle of seafloor spreading.

Oceanic Ridges Are Elevated Compared to the Surrounding Ocean Floor