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Plate Tectonics Voca
Vocab Words for Plate Tectonics Unit
Term | Definition |
---|---|
Mid Ocean Ridges | undersea mountain chain where new ocean floor is produced |
Sea Floor Spreading | The process by which molten 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 by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary |
Divergent Boundary | A plate boundary where 2 plates move away from each other |
Convergent Boundary | A plate boundary where 2 plates move toward each other |
Transform Boundary | A plate boundary where 2 plates move past each other in opposite directions |
Plate Tectonics | The theory that pieces of Earth's lithosphere are in constant motion, driven by currents in the mantle |