Zones
Vocabulary
Vocabulary
Vocabulary
Questions
100
Abyssal Zone
What is 4,000 - 6,000 meters. no sunlight.
100
Abyssal Plains
What is flat areas of ocean floor
100
Currents
What is horizontal movements in a pattern.
100
Nekton
What is organisms that swim and eat plankton
100
island erodes by waves making flat top plates carry islands away from ridge and sink below the ocean surface.
What is know how seamounts form
200
Bathyal Zone
What is begins at continental slope to 4,000 meters
200
Benthos
What is organisms that live on the ocean floor.
200
Fracture Zones
What is faults (cracks) running perpendicular to the mid-ocean ridge which form due to the sinking of tectonic plates.
200
Salinity
What is unfrozen polar water has a high salt concentration so it sinks under less dense surface water.
200
on the sides of moving tectonic plates
What is where are fracture zones located
300
Hadal Zone
What is only in ocean trenches
300
Continental Margin
What is shallow portions of ocean floor made up of the continental crust and thick layer of sediments.
300
Guyot
What is flat topped submerged seamount
300
Submarine Canyon
What is deep valleys in crust
300
to find out the history of the animals that used to live in the area
What is why do scientists research deep ocean core samples
400
Intertidal Zone
What is shallow zone which lies between low and high tides.
400
Continental Rise
What is wedge of sediments at the base of the continental slope.
400
Gyre
What is huge circle of moving water above and below the equator
400
Thermocline
What is layer of water which dramatically decreases as the ocean depth increases.
400
differences in water temperature and salinity
What is what causes deep ocean currents
500
Neretic Zone
What is above ocean surface
500
Continental Shelf
What is shallow layer of water where the ocean covers the edge of the continent.
500
Mid-Ocean Ridges
What is continuous series of underwater mountain ranges that run along the floor of all oceans
500
Trenches
What is deep valley in ocean floor which is made when one tectonic plate subducts under another tectonic plate
500
it becomes denser
What is what happens to deep ocean water as it becomes colder
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