click below
click below
Normal Size Small Size show me how
section 4 words
word | meaning |
---|---|
deep-ocean trench | A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle. |
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. |
seafloor spreading | the idea that the middle of the ocean is spreading apart, moving very slowly in opposite directions. |
subduction | Process in which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary. |