Plate Tectonics.

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Presentation transcript:

Plate Tectonics

Plate Tectonics The theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle. CD + SFS + “plates” = Plate Tectonics!

Breaks in earth’s crust where rocks move Faults Breaks in earth’s crust where rocks move

Faults meet at Boundaries 3 kinds of boundaries: Convergent Divergent Transform

Where 2 plates move apart Divergent Boundary Where 2 plates move apart Mid-ocean ridge (oceanic) Rift Valley (continental)

Mid-Ocean Ridge (SFS)

Rift Valley

Convergent Boundary Where 2 plates collide Oceanic-Oceanic Oceanic-Continental Continental-Continental Outcome determined by DENSITY

Oceanic-Oceanic Convergent Boundary

Oceanic-Continental Convergent Boundary

Continental-Continental Convergent Boundary

Transform Boundary 2 plates slide past each other in opposite directions

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