Question

The Atlantic Ocean is currently growing wider as its floor enlarges due to the process of sea-floor spreading.

In sea-floor spreading, pieces of oceanic crust
A.
move together along a convergent plate boundary.
B.
move apart along a divergent plate boundary.
C.
move sideways against each other along a transform plate boundary.
D.
move down in a subduction zone.

Answer 1

In sea-floor spreading, pieces of oceanic crust:

**B. move apart along a divergent plate boundary.**

This process occurs at mid-ocean ridges, where magma rises to create new oceanic crust as tectonic plates pull away from each other.