1. Theory of Plate Tectonics
Section 1.5

2. Theory of Plate Tectonics
(NOT continental drift which is an hypothesis)
Explains the Formation, Movement, and Subduction of Earth’s plates.

3. Plates
Scientists noticed that the continental crust is broken into pieces just like the ocean floor.
They called these pieces PLATES
Mr. Parr

4. Plate Movement
There are 3 ways plates move at their edges 1. Convergent boundary. Two plates move toward each other

5. Plate Movement
There are 3 ways plates move at their edges 2. Divergent boundary. Two plates move away from each other like mid-ocean ridges under water= mid-ocean ridge on land = rift valley

6. Plate Movement
There are 3 ways plates move at their edges 3. Transform boundary. Two plates move past each other with no change in altitude

7. Plate Boundaries Divergent boundary Convergent boundary
Transform boundary
Mr. Comford’s Rap 2:33

8. Plate Motion over Time

9. Video 2:30
Video :56