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Ch. 20 vocab

QuestionAnswer
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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