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15 Cards in this Set

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Hydrothermic Vents

an areawhere ocean water sinks through cracks in the ocean floor, is heated by theunderlying magma, and rises again through the cracks.




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upwelling

an upward flow of cold water from the ocean depths



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Neritic Zone

the part ofthe ocean that extends from the low-tide line out to the edge of thecontinental shelf



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open ocean zone

the area ofthe ocean beyond the edge of the continental shelf



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plankton

tiny algaeand animals that float in water and are carried by waves and currents



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nekton

free-swimming animals that can move throughout the water column



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benthos

organismsthat live on the bottom of the ocean or other body of water



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intertial Zones

thearea that stretches from the highest high-tide line on land out to the point onthe continental shelf exposed by the lowest low tide



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sonar

asystem that uses sound waves to calculate the distance to an object



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aquaculture

thefarming of saltwater and freshwater organisms



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estuary

a costalinlet or bay where fresh water from rivers mixes with salty ocean water



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surface zone

extendsas far as sunlight reaches below the surface; it is the only part of the openocean that receives enough sunlight for the growth of algae.

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deep ocean zone

begins whenthe sunlight no longer reaches the water (at the end of the surface zone); itis dark and cold.



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surface currents

- is a largea stream of moving water at the surface that flows through the ocean; aremainly driven by winds



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biosphere

thepart of the earth's crust, waters, and atmosphere that supports life



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