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Ch. 13 Oceans

Mr. De La Torre-Ch 13 Exploring Oceans

QuestionAnswer
Salinity a measure of the amount of dissolved solids in a given amount of liquid.
Thermocline a layer of ocean water in which water temperature drops with increased depth faster than in other layers.
Water cycle the continuous movement of water from water sources into the air.
Continental shelf the flattest part of the continental margin.
Continental slope the steepest part of the continental margin.
Continental rise the base of the continental slope.
Abyssal plain the broad flat portion of the deep ocean basin.
Mid-ocean ridge a long mountain chain that forms on the ocean floor where tectonic plates pull apart.
Rift valley a valley that forms in a rift zone between mountains.
Seamounts an individual mountain of volcanic material on the abyssal plain.
Ocean trench a seemingly bottomless crevice in the deep ocean basin.
Plankton very small organisms floating at or near the oceans surface that form the base of the oceans food web.
Nekton free swimming organisms of the ocean.
Benthos organisms that live on or in the ocean floor.
Benthic environment the ocean floor and all the organisms that live on or in it.
Pelagic environment the entire volume of water in the ocean and the marine organisms that live above the ocean floor.
Desalination the process of evaporating sea water so that the water and the salt separate.
Nonpoint-source pollution pollution that comes from many sources and that cannot be traced.
Created by: Mr. DeLaTorre
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