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15 Cards in this Set

  • Front
  • Back

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.


an upward flow of cold water from the ocean depths.

Neritic 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.


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


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


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

Internal 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.


a system that uses sound waves to calculate the distance to an object.


the farming of saltwater or freshwater organisms.


a coastal inlet or bay where fresh water from 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 stream of moving water at the surface that flows through the ocean; are mainly driven by winds.


the part of the earths crust, waters, and atmosphere that supports life.