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9 Cards in this Set

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hydrothermal vents - an area where ocean water sinks through cracks in the ocean floor, is heated by the underlying magma, and rises again through the cracks.

upwelling - an upward flow of cold water from the ocean depths

netric zone - the part of the ocean that extends from the low-tide line out to the edge of the continental shelf

open ocean zone - the area of the ocean beyond the edge of the continental shelf

plankton - tiny algae and animals that float in water and are carried by waves and currents

nekton - free swimming animals that can move throughout the water column

benthos - organisms that live on the bottom of the ocean or other body of water

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

sonar - a system that uses sound waves to calculate the distances to an object

aquaculture - the farming of saltwater and freshwater organisms

estuary - a coastal inlet or bay where fresh water fro rivers mixes with salty ocean water

surface zone - extends as far as sunlight reaches below the surface; it is the only part of the open ocean that receives enough sunlight for the growth of algae

deep ocean zone - begins when the sunlight no longer reaches the water (at the end of the surface zone); it is dark and cold

surface currents - is a large a stream of moving water at the surface that flows through the ocean; are mainly driven by the winds

biosphere - the part of the earth's crust, waters, and atmosphere that supports life

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