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Ch. 20 vocab
| Question | Answer |
|---|---|
| ocean currents | streamlike movements of water in the ocean. |
| surface currents | stream like movements of water that move across the surface. |
| coriolis effect | the curving of moving objects from a straight path because of the earths rotation. |
| deep currents | streamlike movements of water far below the surface of the ocean. |
| upwelling | a process in which cold nutrient rich water from the deep ocean rises to the surface and replaces warn surface water. |
| El Nino | a periodic change in the location of warm and cool surface waters in the Pacific Ocean. |
| crest | the highest point of a wave. |
| trough | the lowest point of a wave. |
| wave length | the distance between two corresponding points that are adjacent on a wave. |
| wave height | the vertical distance between the creat and trough of a wave. |
| wave period | the time between the passage of two waves crests/ troughs at a fixed point. |
| breakers | ocean waves whose crest fall because of gravity as they approach the shore. |
| whitecaps | white foaming waves with very steep crests that break in the open ocean before the waves get close to the shore. |
| swellls | rolling waves that move steadily across the ocean. |
| tsunami | a wave that forms when a large volume of ocean water is suddenly moved up or down. |
| storm surge | a local rise in sea level near the shore that is caused mainly by strong winds in a storm. |
| tides | daily changes in the levels of ocean water. |
| lunar phases | the different appearences of the moon throughout the month. |
| lunar cycle | the orbit of the moon around the earth, during which all of the lunar phases occur. |
| tidal range | the difference between levels of ocean water at high tide and low tide. |
| spring tide | tides that have the largest daily tidal range and occur during the new and full moons. |
| neap tides | tides with the smallest daily tidal range that occur during the first and third quarters of the moon. |
Created by:
MadelynI
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