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8th grade Chapter 14
The Ocean Floor
15
Other
Not Applicable
07/27/2006

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Term
ocean basin floor
Definition
area between the continental margin and mid-ocean ridge
Term
oceanogrpahy
Definition
a science that draws on the methods and knowledge of geology, chemistry, physics and biology to study all parts of the world
Term
bathymetry
Definition
the measurement of ocean depths and the charting of the shape of the ocean floor
Term
sonar
Definition
a machine that uses sound waves to calculate the distance to an object
Term
submersibles
Definition
small underwater craft used for deep-sea research
Term
continental margin
Definition
changeover between a continent and the neighboring ocean basin floor
Term
continental shelf
Definition
a gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent
Term
continental slope
Definition
a steep incline of the ocean floor leading down from the edge of the continental shelf
Term
submarine canyons
Definition
deep, steep-sided valley that are cut into the continental slope
Term
turbindity currents
Definition
occasional movements of dense, sediment-rich wate down the continental slope
Term
continental rise
Definition
where the continental slope becomes less steep in slope
Term
deep ocean trench
Definition
a deep, steep sided canyon in the ocean floor
Term
abyssal plains
Definition
a deep, smooth, nearly flat area of the deep ocean floor
Term
seamounts
Definition
submerged volcanic peaks that are on the ocean floor and have not reached the ocean surface
Term
mid-ocean ridge
Definition
continuous range of mountians that winds around Earth, passes through all of Earth's oceans
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