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Vocabulary
Organisms
Currents
Vocabulary
Zones and Layers
100
Continuous flow of ocean water in a certain direction.
current
100
Can all organisms live under moderate conditions?

Why or why not?

No, because some are extremophiles.
100
What causes surface currents?
winds
100
Movement that transfers energy through matter.
waves
100
What zone has periods of submersion and exposure?
intertidal
200
Tiny algae and animals that float in the surface zone.
plankton
200
What are extremophiles?
Organisms that can live in extreme conditions where most organisms wouldn't survive.
200
What causes deep currents?
differences in density
200
strong flow of water perpendicular to the shore that returns seaward.
rip current
200
What area on the ocean floor has high salinity?
brine pools
300
Gently sloping area of ocean floor that extends outward from shoreline.
continental shelf
300
How does bioluminescence help certain organisms?
They have the ability to produce their own light.
300
What are ALL currents affected by?
gravity and the Coriolis effect
300
Production of light by living organisms.
bioluminescence
300
What layer rapidly decreases in temperature?
transition layer
400
Organisms that inhabit ocean floor.
benthos
400
Why do organisms need bioluminescence?
There is no light in the deep layer.
400
What is a longshore current?
Water movement caused by waves that strike the beach at an angle.
400
Movement of water caused by waves that strike the shore at an angle.
longshore current
400
This area of ocean extends from the low tide line out to the edge of the continental shelf.
neritic
500
free swimming organisms
nekton
500
What do organisms with bioluminescence use their light for?
To attract a mate or prey, or to escape a predator.
500
How does a longshore current affect the shoreline?
As the waves move up and back, the water erodes the sand and deposits it farther down the shoreline.  
500
Relating to an ocean zone located between high and low tide lines.
intertidal
500
Where do hydrothermal vents occur?
the deep layer