| A | B |
|---|
| Continental Margin | Regions of the sea floor that contains the shelf and slope. |
| Continental Shelf | Part of the continent that is underwater. |
| Continental Slope | Where water deepens abruptly and the edge of the continental land mass drops off. |
| Ocean Basin Floor | Begins where the slop ends, regions made up of mountians, ridges, trenches, valleys, rifts, guyots, abyssal plains, and canyons pleateau. |
| Abyssal Plain | vast smooth areas on the floor |
| Trenches | cracks on the Earth's crust, deepest part of the oceans. |
| Guyots | flat topped volcanic mountains |
| Rift | a vally that runs along the center of a ridge |
| Seamount | issolated mountain that rises more than 3000 ft. above the sea floor. |
| Mid-Ocean Ridge | Great undersea mountain ranges characterized by frequent earthquakes and volcanoes |
| Island | seamount that rises above the surface of the water |
| Water Coverage | 75% of the earth's surface is covered with water |
