1. TLW identify convergent, divergent, and transform plate boundaries
For the purpose of understanding the different landforms formed by these plate boundaries
As measured by naming the three types of plate boundaries correctly

2. Why do we have earthquakes?
Plate Tectonics
Why do we have earthquakes?

3. Is the earth’s crust solid?
No, the earth’s crust is broken into many plates.

4. Do the plates move?
At one time, there was only one continent called Pangaea.
Yes, the plates move slowly over time.

5. Why do they move?
Heat from the inner earth creates convection currents that move the magma.

6. Driving Forces of Plate Tectonics

7. Two Tectonic Plates That Separate
 Divergent
Boundary 
Two Tectonic Plates That Separate

8. Magma rises up and new crust is formed
 Divergent
Boundary 
Sea-floor spreading
Magma rises up and new crust is formed

9. Divergent
Boundary 
Mid-Atlantic Ridge
Indian Ridge

10.  Divergent
 Divergent
Boundary 
Boundary 

11. Divergent
Boundary
Rift Valley
Iceland

12.  Divergent
Boundary 
Rift Valley in Africa

13. (Land Subsidence = sinking land)
The East African Rift Valley is land that has sunken by divergent boundary
(Land Subsidence = sinking land)

14. Two tectonic plates slide past each other.
 Transform
Boundary 
Two tectonic plates slide past each other.

15.  Transform
Boundary 

16.  Transform
Boundary 

17. Two tectonic plates collide.
Convergent 
 Boundaries
Two tectonic plates collide.

18. Ocean-Continent Convergent Boundary
Rising magma forms new crust in the form of mountains and volcanoes
Two plates converge
Heavier plate squeezed down
Sea Trench
Subduction
Melting of old crust

19. Andes Mountains
Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc.

20. Ocean-Ocean Convergent Boundary
Aleutian Trench
Old crust is melted and recycled.

21. Aleutian Islands

22. Continent-Continent Convergent Boundary
No new crust is formed or created

24. TLW identify convergent, divergent, and transform plate boundaries
For the purpose of understanding the different landforms formed by these plate boundaries
As measured by naming the three types of plate boundaries correctly