The Ocean Floor

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Long, narrow cracks in the ocean floor, the deepest parts of the ocean.

The ocean floor at a depth of more than 4,000 meters.

A mountain chain that rises from the ocean basins; where seafloor spreading takes place.

A flat part of the continent that is covered by seawater; lies between the coast and the ocean basin.

Deep, V-shaped valleys found along the continental slope

Detailed charting of the features of an area; heights, depths, and shapes of the surface of an area.

The sloping surface between the edge of the continental shelf and the ocean basin.

Underwater volcanic mountains with flat tops.