| A | B |
|---|
| basin | the oceans floor, which contains mountains, valleys, & plains |
| abyssal plain | vast, flat land covering almost half of the deep ocean floor |
| mid-ocean ridges | chains of mountains that wind their way through all the world's major oceans |
| continental shelf | the underwater edge of a continent |
| trench | the narrow V-shaped valley on the ocean floor |
| seamount | a huge underwater mountain |
| continental slope | this leads from the continental shelp toward the sea floor |
| current | stream of water that flows through the ocean like a river |
| continental rise | buildup of sediment on the sea floor at the bottom of the continental slope |
