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Topic 8

Plate Tectonics

mid-ocean ridge An undersea mountain chain where new ocean floor is produced or made. A DIVERGENT PLATE BOUNDARY under the ocean.
sea-floor spreading The process by which molten material ADDS NEW oceanic crust to the ocean floor.
subduction The process by which oceanic crust SINKS beneath a deep-ocean trench and back into the mantle at a CONVERGENT PLATE BOUNDARY.
ocean trench An undersea valley that represents one of the DEEPEST parts of ocean.
divergent boundary A plate boundary where 2 plates move AWAY from each other.
convergent boundary A plate boundary where 2 plates move TOWARDS each other.
transform boundary A plate boundary where 2 plates move PAST each other in OPPOSITE directions.
Created by: KHow424