|What is the source of most of the salt in the oceans?
||Rocks on Land
|What is an under water mountain range where new seafloor is formed?
|What is a flat area on the ocean floor called?
|What is a long, narrow, steep-sided depression on the ocean floor?
|What is a steeper slope that extends from the outer edge of the continental shelf down the ocean floor?
|What is an inactive volcanic peak on the bottom of the ocean floor?
|What is the gradually sloping end of a continent that extends under the ocean?
|A volcano on the ocean floor that creates a mountain big enough to break the ocean surface.