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8 Cards in this Set
- Front
- Back
What is a system that uses sound waves to calculate the distance to an object?
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sonar
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What is the gently sloping, shallow area of the ocean floor that extends out from the edge of a continent?
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continental shelf
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What is formed when volcanic mountains break the surface of the ocean and lava cools?
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volcanic island
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What is a steep incline that extends beyond the continental shelf to the deep ocean floor?
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continental slope
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What is a deep, steep-sided canyon in the ocean floor? It is often where the denser oceanic plate subducts under the less dense continental plate.
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trench
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What is the smooth, nearly flat region of the ocean floor that is made of thick layers of sediment and sunken remains of dead organisms?
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abyssal plain
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What part of the ocean consists of many peaks along both sides of a central valley?
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mid-ocean ridge
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What do we call a mountain whose peak does not reach the surface of the ocean above?
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seamount
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