Flashcards in Marine Organisms, Ocean Layers, and Surface Currents Deck (42)
What are the three broad categories of creatures that live in the ocean?
What are pelagic organisms?
any organisms that can move by its own locomotion
pelagic organisms are mostly things with...
Where do Pelagic organisms live?
in the uppermost waters of the ocean
What are some examples of Benthic organisms?
benthic organisms attach themselves to ocean ______ on the ocean floor
Where do benthic organisms live?
on the ocean floor (bottom sediments) but still in waters shallow enough to receive sunlight.
Planktonic organisms are anything that _____ or _____ along with ocean currents
Almost all the organisms of the ocean live in the _____ zone
What is the photic zone?
the upper 200 meters of the ocean where there is enough light for photosynthesis to occur
The photic zone is the upper _____ meters of the ocean.
in the photic zone there is enough light for _________ to occur
what is the photic zone defined by?
how much sunlight gets/passes through
what are four zones of the ocean?
How are the zones of the ocean defined?
by density and temperature
the zones of the ocean are defined by ______ and _____
Which layer comprises the first 100 meters of the ocean?
the surface layer
the surface layer is characterized by _____ and _____ density water
the transitional zone stretches form _____ to _____ meters
In which zone does the temperature of the water decrease and the density increase?
the transitional zone
In the transitional zone, the temperature of the water _____ and the density ______
The deep zone is...
very dense and very cold
what is the deep zone composed of?
calcareous/ siliceous ooze, or red clay
What is the average temperature in this zone?
surface ocean currents are the way that the water _______ near the ______
Most surface ocean currents form in response to _____ and ____ variations
Surface ocean currents an be modified by the ______ effect
Briefly, what causes the Coriolis effect?
the rotation of the Earth.
what are teleconnection?
anomalies that occur in the surface circulation currents