Exam 13: The Ocean Floor

Submarine canyons form the deepest parts of the ocean basins.

What energy resource is present in the oceans with far more energy reserves than conventional oil and gas?

A(n)________ is a volcanic mountain,built up from the seafloor that never reached the sea surface.

Submarine canyons found on the continental slope are believed to have been created ________.

________ continental margins occur where oceanic lithosphere is being subducted beneath the edge of a continent.

The seafloor spreading process at ridges produces what kind of faults?

How do calcareous oozes form?

The second most important economic mineral resource extracted from the seafloor today is manganese from manganese nodules.

The west coast of South America and the east coast of North America have very different continental margins.

Why are there virtually no sediments at ocean ridges,even when they are close to land?

-manganese nodule

Abyssal plains with sediments covering the seafloor igneous rocks are more extensive in the central Pacific basin than in the North Atlantic.