1. How Landforms Are Created

2. Plate Tectonics

3. Large moving slabs of rock slide slowly over a layer of the mantle
Plate Tectonics

4. The Theory of Continental Drift

5. Earth ~200 million years ago

7. Alfred Wegener’s Evidence:
The presence of fossils only over small areas of now separate continents

8. 3 Types of Plate Boundaries
Divergence
Convergence
Transformal

9. DIVERGENCE

10. Divergence

11. Process where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge
Sea-Floor Spreading

12. CONVERGENCE

13. Forms mountains, e.g. European Alps, Himalayas
CONVERGENCE

14. CONVERGENCE ZONE

15. Shows the South American and Nazca plates colliding

16. Transformal

17. No mountains are created
Transformal
No mountains are created

18. What are Hot Spots???

19. What are Hotspot Volcanoes?
Hot mantle breaches the surface in the middle of a tectonic plate
The Hawaiian island chain are examples of hotspot volcanoes.

20. Has a major impact on countries that are close to it
Examples: Earthquakes, Volcanic Eruptions
Pacific Ring of Fire

21. Hawaii was formed by volcanic activity