According to the plate tectonics theory, sea-floor spreading occurs at a
A)subduction zone.
B)convergent boundary.
C)divergent boundary.
D)transform boundary.

Question

Quizplus · Accepted Answer

Sea-floor spreading occurs at divergent boundaries, where two tectonic plates are moving away from each other. As they move apart, magma rises from the mantle to fill the gap and solidifies to form new sea floor. This process is responsible for the creation of mid-ocean ridges, such as the one that runs through the Atlantic Ocean.

According to the Plate Tectonics Theory, Sea-Floor Spreading Occurs at a