| A | B |
|---|
| Continetal Margin | region of the seafloor that contains the shelf and slope |
| continental shelf | part of the contenite that is under water |
| continental slope | where water depends adruptively and the edge of the continental land mass drops off |
| ocean basin floor | begins where the slope ends,reigon made up of mountain, ridges, trenches, valleys, rifts, guyots, abyssal plains, and cnyons plateau |
| Abyssal plain | vast smooth areas on sea floor |
| Trenches | cracks on earths crust, deepest part of the ocean |
| guyots | flat topped volcanic mountains |
| rift | a vally that runs along the center of a ridge |
| seamount | insolated mountain that rises more than3,000 ft. above the sea floor |
| mid-ocean ridge | great undersea mountain ranges chatictorizedby frequentearthquakes and volcanoes |
| ISLAND | seamount that rises above the surface of the water |
| what % of the earth is water? | 75% of the earth’s surface is covered with water |
