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Marine Biology Module 1

Terms

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mid-ocean ridge
a continuous chain of underwater volcanic mountains encompassing the earth
seafloor spreading
the process that creates new sea floor as plates move away froom each other at the mid-ocean ridges
continental crust
the portion of the earth's crust that primarily contains granite, is less dense the oceanic crust, and is 20 to 50 kilometers thick
oceanic crust
the portion of the earth's crust that primarily contains basalt, is relativly dense, and is about 5 kilometers thick
continental slope
the steeper section of a continental edge, extending seaward from the continental shelf
Which is denser......water or ice?
water
specific heat
the amount of energy required to raise the temperature of one gram of a substance by 1.00*C
What color penetrates the deepest in the ocean? Shallowest?
Blue....Red
What creates a flexible "skin" at the surface of the water?
hydrogen bonding
It was believed that at one time all continents were part of one supercontinent. What was it called?
Pangea
continental shelf
the gently sloped, shallow section of the edge of a continent, extending from the shore to the point were the slope gets steeper
continental rise
the gently sloping area at the base of the continental slope
Which regoin of the ocean floor collects sediment buildup?
continental rise
Where is there more pressure....the surface of the water or the bottom of the ocean?
bottom of the ocean
coriolis effect
the way in which the rotation of the earth bends the path of winds and resulting sea currents
salinity
the total amount of salt dissolved in a solvent
From which region of the ocean floor does most plant and animals life come from?
continental shelf
When is there a higher high tide.....spring tide or neap tide?
spring tide
What are the 4 ocean basins of the world?
Pacific, Atlantic, Arctic, Indian
Which of the two earth crusts is thicker?
continental crust
spring tide
a time of largest tidal range due to the gravitational pull of the aligned sun and moon (during full and new moon)
What are the earth's 4 layers?
crust, mantle, outer core, inner core
plate tectonics
a process involving the movement of large plates on the earth's mantle
gyres
large, mostly circular systems of surface currents driven by the wind
neap tide
a time of smallest tidal range due to the moon and sun beoin located at right angles to each other (during quarter moons)

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