| A | B |
|---|
| abyssal plain | flat part of the ocean floor |
| continental rise | It is at the base of the continental slope. It leads to the ocean floor. |
| continental shelf | The land around the edge of a continent that is under the shallowest water. |
| continental slope | Steep drop off that extends from the continental shelf to the continental rise. |
| ocean ridge | underwater mountain |
| ocean trench | The deepest part of the ocean. A deep valley in the bottom of the ocean floor. |
| Gulf Stream | a major ocean current |
| crest | The top of a wave before it breaks. |
| trough | The bottom part of a wave |
| wave | A disturbance in the ocean caused by win |
| salinity | The measure of the amount of salt dissolved in the water. |
| current | A stream of a water within the ocean. It is like a river flowing through the ocean. |
| phytoplankton | A plant-like organism that is the bottom of the ocean's ecosystem. It starts most ocean food webs,. |
| depth | The distance below the ocean's surface. |
