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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. |
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upwelling |
an upward flow of cold water from the ocean depths |
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neritic zone |
the part of the ocean that extends from the low-tide line out to the edge of the continental shelf |
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open ocean zone |
the area of the ocean beyond the edge of the continental shelf |
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plankton |
tiny algae and 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 |
organisms that live on the bottom of the ocean or other body of water |
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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 tide |
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sonar |
a systm that uses sound waves to calculate the distance to an object |
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aquaculture |
the farming of saltwater and freshwater organisms |
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estuary |
a costal inlet or bay where fresh water from rivers mixes with salty ocean water |
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surface zone |
extends as far as sunlight reaches below the surface it is the only part of the ocean that receives enough sunlight for the growth of algae |
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deep ocean zone |
begins when the sunlight no longer reaches the water at the end of the surface zone its dark and cold |
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surface currents |
is a large stream of moving water at the surface that flows through the ocean ;are mainly driven by winds |
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biosphere |
the part of the earths crust and atmosphere that supports life |