2. Plate 8 th Grade Science With the marvelous Mr. Christine Tectonics

3. What is Plate Tectonics? Remember what a theory was? –A scientific Theory is a well tested concept that explains many observations. So, the Theory of Plate Tectonics is … –Pieces of the Earth’s Lithosphere are in slow, constant motion, driven by convection currents in the mantle.

4. Remember the Interior of the Earth or else …

5. What a full plate

6. What is a plate? A plate is a section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of oceanic and continental crust.

7. Remember Convection The transfer of heat by movement of a fluid. This causes plate movement

8. Plate Boundaries The Earth is broken up into many plates So, the plates meet at areas called boundaries Plate Boundaries: Where edges of world’s plates meet. 3 types –D–Divergent, Convergent, and Transform

9. Divergent Boundary Divergent Boundary: Place where two plates move apart or diverge. Ocean = Mid Ocean Ridge Land = Rift Valley

10. Divergent Boundary

11. Convergent Boundary Convergent Boundary: Place where two plates come together or converge and collide. Remember Subduction?

12. Convergent Boundary

13. Transform Boundary Transform Boundary: Place where two plates slip past each other moving in opposite directions. Earthquakes occur but no crust is destroyed

14. San Andreas Fault (Transform)

15. All Boundaries

16. Pangea to Future