Ocean floor and sea floor terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| continental shelf | continent's rim, extends from the shoreline, sealife is abundant here, 10-100 miles long, gradually slopes
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| continental slope | The big frop-off to the ocean floor, plunges from the continental shelf, can be more than 10,000 feet deep
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| abyssal plain | Begins at the base of the continental slope, usually 2 miles (10,000 feet) deep, much of the floor is the abyssal plain, form much of the ocean basins of the world
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| guyot | flat topped underwater seamounts, many are found in Pacific Ocean
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| trench | deepest areas of the oceans, depressions, the Marianas Trench is more than 7 miles deep
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| ridge | Chains of undersea mountain ranges, the Mid-Ocean Ridges extend about 42,000 miles and covers 23% of the earth's surface, occur where mantle material rises to the top of the earth's crust and spreads out to create a NEW ocean floor
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| rift | a split, break or crack
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| island | tops of ocean floor mountains, rise above the surface, Hawaiian islands are highest peaks of a volcanic mountain range
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Created by:
dfinger@shipley
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