1. 9/15/10 BR: What do you think… Will Chicago ever have a volcano
9/15/10 BR: What do you think… Will Chicago ever have a volcano? How are mountains formed? Why do earthquakes happen? Today: The Earth’s Crust & Continental Drift

2. Plates move at a rate of between ½ to 4 inches annually
Continental Drift
Earth’s crust is broken up into plates which float around on magma and bump into each other.
Plates move at a rate of between ½ to 4 inches annually

7. Pangaea – Super Continent from which all continents grew

8. Continental Drift Plates come together or spread apart at plate boundries.
Convergence- when 2 plates come together, forming mountains
Subduction- when 1plate slides under the other
Divergence- when magma rises to the surface, creating new ocean floor- sea floor spreading
Transform- when 2 plates slide against each other- fault line
Continental rift- when a continent is pulled apart

9. Assignment (25 Points)- Due Thursday
Using information from today draw each type of plate boundry. Make sure to label each type of boundry.