1. Plate Tectonics, Pangaea, Continental Drift, and Erosion Forces
Land Formations
Plate Tectonics, Pangaea, Continental Drift, and Erosion Forces

3. Average Plate Movement/Year
Plate Absolute Velocity (cm/yr)*
Antarctic ~2.05
African ~2.15
Arabian ~4.65
Caribbean ~2.45
Cocos ~8.55
Eurasian ~0.95
Indian ~6.00
Nazca ~7.55
North American ~1.15
Pacific ~8.10
Philippine ~6.35
South American ~1.45

4. Background questions…
Define plate tectonics.
What is Pangaea?
How long ago did Pangaea exist?
How do scientist support continental drift?

5. Theory Support Fossils-distribution of ancient plants and animals
Paleoclimatology-sedimentary rocks indicate climate and latitude of original placement
Rock magnetism-rocks, especially volcanic rocks, preserve a record of the orientation of the earth’s magnetic field
Sea floor spreading-formation of the Mid-Atlantic Ridge

6. Fossil Support

7. Pangaea

8. Erosion Forces Name the four external erosion forces.
Which of the four forces are most common here?
Using a atlas tell the erosion force that affects the following areas:
-Kjolen Mountains, Norway
-Cape Town, South Africa
-Amazon Basin, Brazil
-Gobi Desert, Mongolia