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Ch. 1 Sec. 4

Sea Floor Spreading

QuestionAnswer
Mid-ocean ridge Giant undersea mountain range extending around the world like the seams of a baseball.
Sonar A system that uses the reflection of underwater sound waves to detect objects.
Sea-floor spreading The idea that the middle of the ocean is spreading apart, moving very slowly in opposite directions.
Deep-ocean trench A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.
Subduction Process in which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary.
Created by: huffakerluk11
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