| A | B |
|---|
| continental rise | a buildup of sediment on the sea floor at the bottom of the continental slope |
| deep currents | caused by difference in salinity, temperature (cold water sinks) |
| continental slope | the steep slope leading down from the continental shelf toward the sea floor |
| tide | the ocean movement of the surface level caused by the gravitational attraction between the Moon and the Sun |
| wave | the up and down movement of water |
| mid-ocean ridge | chain of mountains that wind along all the world’s major oceans |
| current | an ocean movement with a large stream of water |
| surface currents | caused by wind, Earth’s rotation, and the sun |
| seamount | a huge underwater volcanic mountain |
| trench | a deep valley in the sea floor |
| abyssal plain | the vast flat lands beyond the continental shelf that cover almost half of the deep ocean floor |
| salinity | describes how much salt is found in a body of water or solution |
| crest | the ridge or top of a wave |
| trough | the depression (u-shaped dip) between two waves |
| breaker | a wave breaking into foam against the shore |
| wave length | the space between wave crests |
| continental shelf | the underwater edge of a continent |
