The main idea of seafloor spreading is that
A)lithosphere floats on the asthenosphere.
B)new crust forms at a spreading center and old crust is recycled at a subduction zone.
C)new crust is magnetized according to the existing magnetic field.
D)the seafloor never stops growing.

Question

Quizplus · Accepted Answer

Seafloor spreading is the process by which new oceanic lithosphere is formed at a spreading center and older oceanic lithosphere is recycled at a subduction zone. This process is driven by the movement of tectonic plates. As new crust forms, magnetic minerals within the rock align themselves with the existing magnetic field, creating a magnetic pattern on the seafloor.

The Main Idea of Seafloor Spreading Is That