1. Plate Tectonics
Notes

2. Alfred Wegener – developed the Theory of Continental Drift
Noticed the continents fit together like a puzzle
Found fossils of identical species on different continents
Found identical geologic structures on different continents
Pangaea – name of the giant supercontinent
Theory of Plate Tectonics – states that the lithosphere is divided into plates that are slowly moving on the asthenosphere

3. Continental crust – crust that is beneath the continents
Thicker
Denser
Older crust
Oceanic crust – crust that is beneath the oceans
Thinner
Less dense
Newer crust

4. Types of Boundaries
Convergent boundary – boundary that occurs where two plates are moving toward each other
Divergent boundary – boundary that occurs where two plates are moving away from each other
Transform boundary – boundary that occurs where two boundaries are sliding past each other