| A | B |
|---|
| Continental Margin | Regions of sea floor that contains the shelf and the slope |
| Continental Slope | where water deepens abruptly and the edges of the continental land mass drops off |
| Continental Shelf | Part of the continent that is underwater |
| Ocean Basin Floor | begins where the slope ends, regions made up of mountains, ridges, trenches, valleys, rifts, guyots, abbysal plains, and canyon plateau |
| Abbysal Plains | vast smooth areas on floor |
| Guyots | Flat topped volcanic mountains |
| Rift | a valley that runs along the center of a ridge |
| Steamout | iceletaed mountains that rise more than 3000 feet above sea floor |
| Mid-Ocean Ridge | great undersea mountain ranges characterized by freakquent earthquakes and volcanoes |
| island | steamout that rises above the surface of the water |
