2. Plate Tectonics

3.  http://vimeo.com/14258924 http://vimeo.com/14258924

4. What is the theory of plate tectonics?  The Earth’s lithosphere is cracked into separate sections known as plates  Geological theory states that these plates are in constant, slow motion, driven by the convection currents in the mantle

5. What happens where the plates meet?  Plate Boundaries – where the edges of the lithosphere meet; faults form along these boundaries:

6. 1. Transform boundaries a. The place where two plates slip past each other, moving in opposite directions Sketch a diagram of a transform boundary in your composition book.

7.  http://geology.com/nsta/transform-plate- boundaries.shtml http://geology.com/nsta/transform-plate- boundaries.shtml

8. Transform Boundary in California: San Andreas fault

9. 2. Divergent Boundaries a.The place where two plates move apart, or diverge and create a rift valley Sketch a diagram of a divergent boundary in your composition book.

10.  http://geology.com/nsta/divergent-plate- boundaries.shtml http://geology.com/nsta/divergent-plate- boundaries.shtml

11. Mid-Atlantic Ocean Ridge

13. 3. Convergent boundaries a.The place where two plates come together, or converge creating a collision b. Subduction occurs at convergent boundaries Sketch a diagram of both convergent boundaries in your composition book.

14.  http://geology.com/nsta/convergent-plate- boundaries.shtml http://geology.com/nsta/convergent-plate- boundaries.shtml

15. convergent boundary

16. Glossary Entries 1. Plate boundary 2. Transform boundary 3. Divergent boundary 4. Convergent boundary