| A | B |
|---|
| ocean current | a movement of ocean water that follows a regular pattern |
| surface current | a horizontal movement of ocean water that is caused by wind and that occurs on or near the ocean’s surface |
| Coriolis effect | the apparent curving of the path of a moving object from an otherwise straight path due to the Earth’s rotation |
| deep current | a streamlike movement of ocean water far below the surface |
| upwelling | the movement of deep, cold, and nutrient-rich water to the surface |
| El Nino | a change in the water temperature in the Pacific Ocean that produces a warm current |
| La Nina | a change in the eastern Pacific Ocean in which the surface water temperature becomes unusually cool |
| undertow | a subsurface current that is near shore and that pulls objects out to sea |
| longshore current | a water current that travels near and parallel to the shoreline |
| whitecap | the bubbles in the crest of a breaking wave |
| swell | one of a group of long ocean waves that have steadily traveled a great distance from their point of generation |
| tsunami | a giant ocean wave that forms after a volcanic eruption, submarine earthquake, or landslide |
| storm surge | a local rise in sea level near the shore that is caused by strong winds from a storm, such as those from a hurricane |
