1. Layers of the Earth

3. Continental crust includes continental shelf – it is not just visible continent

4. Oceanic crust is the crust under the oceans

5. Continental vs. Oceanic crust
Continental Crust Thicker Less dense Older
Oceanic Crust Thinner Denser Younger
Which type of crust will go under the other if the two meet? Continental or Oceanic?

6. Plate movement can cause:

7. Two continental plates collide
Mountains (non volcanic) form as two plates move into each other

8. An oceanic and a continental plate collide
Volcanic mountains can form as a result of the more dense oceanic crust subducting beneath the less dense continental crust.

9. Two plates slide past each other
The friction of two plates moving past each other can create earthquakes

10. Plates move apart from each other
Rift Valleys can form as two plates move away from each other
Also, the Mid-Ocean Ridges

11. What causes plate movement?
Convection Currents
What are other examples of convection currents?
Heat above a lamp
Ocean water
Hot summer day