New crust is continually being pushed away from divergent boundaries (where sea-floor spreading occurs), increasing Earth's surface. But the Earth isn't getting any bigger. What happens, then, to ...

These convergent boundaries also occur where a plate of ocean dives ... A mid-ocean ridge would then mark the boundary between the plates. Mountains and a rift can be seen along the San Andreas ...

Also known as subduction boundary, a convergent boundary occurs where one plate slides under another as the two are pushed together. If there is land at the edge of one of these plates ...