1. Theory of Plate Tectonics
1) What are the types of plate boundaries and where are they located?
2) What features are found at each plate boundary.
3) How do the plates move?

2. Day 1: What is Plate Tectonics
The Earth’s crust and upper mantle are broken into several movable sections called plates
Unifying Theory of Geology.
Explains why we have mountains, volcanoes, earthquakes, the rock cycle etc.

4. There are only 3 types of plate boundaries

6. Divergent and Convergent Boundaries

7. Boundary Type 1
Divergent Boundaries
Boundary between two plates that are moving apart.
 
Divergent boundaries cause SEAFLOOR SPREADING

8. Features of Divergent Boundaries
Mid-ocean ridges
Rift valleys
Magma fills gap and causes underwater volcanoes

9. Atlantic Ocean is getting BIGGER

10. Convergent Boundaries
Boundary Type 2
Convergent Boundaries
Boundaries between two plates that are colliding
 
There are 3 types…

11. Convergent Type 1
Ocean plate colliding with a less dense continental plate
Subduction Zone: where the more dense plate slides under the less dense plate
VOLCANOES occur at subduction zones

13. Andes Mountains, South America

14. Convergent Type 2 Ocean plate colliding with another ocean plate
The more dense plate slides under the less dense plate creating a subduction zone called a TRENCH

16. Convergent Type 3
A continental plate colliding with another continental plate
Have Collision Zones:
a place where folded and thrust faulted mountains form.

19. Transform Fault Boundaries
Boundary Type 3
Transform Fault Boundaries
Boundary between two plates that are sliding past each other
EARTHQUAKES often occur along faults
San Andreas Fault

21. San Andreas Fault, CA

22. Day 2: Review Questions...
What are the three types of plate boundaries?
Draw arrows to show what direction do plates go for each?
List two or three major features or events that occur at each boundary?

23. Day 3: Causes of Plate Tectonics

24. Convection Currents
The Earth’s solid Lithosphere (the crust and upper part of the mantle) floats like a raft on the partially melted athenosphere.
Fluid rock in the athenosphere moves toward the surface, cools, then sinks again.
Creates convection currents beneath the plates that cause the plates to move like a conveyor belt..

25. Convection currents in the athenosphere cause the plates to move
Convection currents in the athenosphere cause the plates to move. Notice that divergent boundaries occur where hot material is rising and convergent boundaries occur where hot material is sinking.
Notice diver

26. Day 3: cont..

27. Day 3: Questions... What causes plates to move?
How is a convection current formed?

28. Day 4: Quiz (Rockin!!!)