1. Major Geological Events Caused by Plate Tectonics

2. Types of Boundaries Divergent   Plates move apart Convergent 
Plates come together
Transform
Plates slide horizontally
past each other

3. DIVERGENT {PLATE} BOUNDARY
What are DIVERGENT plates?
They are plates that move in the opposite direction of each.
How do DIVERGENT plate boundaries work?
They pull apart allowing magma to ooze through the cracks to the surface of the sea floors
What do DIVERGENT plate boundaries form?
New Crust
Form mountain ranges on the sea floor.

4. CONVERGENT {PLATE} BOUNDARY
What are CONVERGENT plates?
They are plates that COLLIDE with each other
How do CONVERGENT plate boundaries work?
The continental crust {what we live on} and the oceanic crust {under the sea} collide.
The oceanic crust {more dense} sinks below the continental crust {less dense}.
What do CONVERGENT plate boundaries form?
Major Earthquakes
Volcanic Mountains
Deep sea trenches

5. TRANSFORM {PLATE} BOUNDARY
What are TRANSFORM plates?
The action of two plates that are sliding past each other
How do TRANSFORM plate boundaries work?
These plates sliding past each other horizontally cause large amounts of energy to build up.
What do TRANSFORM plate boundaries form?
Tsunami
Major Earthquakes
Faults

6. Subduction Result of convergent boundary
A more dense plate slides under a less dense plate and sinks into the mantle.
Features include:
Oceanic-Oceanic = Trenches
Oceanic-Continental = Mountain Ranges

7. PLATE TECTONICS
A theory that explains the movement of continents
Massive Slab of rock
Irregularly shaped
Located and Float on the Lithosphere
Move around Earth by circulating CONVECTION CURRENTS {hot liquid rises and cold liquid sinks, moves in a circular motion, the energy gets transferred}
Move only a few centimeters each year
Most of the events happen near the boundaries

8. Trench - a depression in the ground that is generally deeper than it is wide

9. Fault Lines – break in the Earth’s crust

10. Transform Boundary San Andreas Fault Line

11. Rift Valley – lowland between several highlands or mountain ranges caused
by a fault

12. Rift Valley Divergent Structure
Divergent Structure

13. Mid–Ocean Ridge (Location of Sea Floor Spreading)

14. Sea Floor Spreading (Mid-Ocean Ridge)
Younger
Older
Older
Divergent Structure

16. Transform Boundary
Oceanic-Oceanic
Land Feature – Fault Line

17. Volcanoes

18. Earthquakes – All Boundaries

19. Subduction Examples

20. Oceanic-Oceanic convergence
Convergent Boundary
Oceanic-Oceanic
Land Features – Trench and Island Arc
Oceanic-Oceanic convergence

21. Oceanic-Continental convergence
Convergent Boundary
Oceanic-Continental
Land Features – Trench and Volcanic Arc (Volcanic Mountains)
Oceanic-Continental convergence

22. Continental-Continental convergence
Convergent Boundary
Continental-Continental
Land Features – Folded Mountains
Continental-Continental convergence

23. Mountain Ranges

24. Transform Boundary Continental-Continental Land Features – Fault Line
Aerial view of San Andreas Fault in the Carrizo Plain, self-made, Nov 16, 2007, I. Kluft,

25. Putting It All Together

26. Plate Movement