Question

Which is a result of seafloor spreading?

A magma piles up on top of the plates involvedmagma piles up on top of the plates involved


B earthquakes occur along the edge of the larger plate earthquakes occur along the edge of the larger plate


C the plates involved grow in size as the ocean floor extendsthe plates involved grow in size as the ocean floor extends


D the plates involved are cracked on the surface

Answer 1

Seafloor spreading creates new crust. Subduction destroys old crust. The two forces roughly balance each other, so the shape and diameter of the Earth remain constant.

Answer 2

Answer: C

I know it’s not A nor B and I don’t think it’s D so C because the ocean floor is extending.