An under sea mountian chain where new ocean floor is produced

The process by which molton material adds new oceanic crust to the ocean floor

A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle

The process ny which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundry.

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Sea Floor Spreading

science

Question	Answer
Mid Ocean Ridge	An under sea mountian chain where new ocean floor is produced
Sea Floor Spreading	The process by which molton material adds new oceanic crust to the ocean floor
Deep Ocean Trench	A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
Subduction	The process ny which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundry.