In class we finished the Slinky Lab and started the Forces in Earth's Crust notes
http://docs.google.com/present/edit?id=0AVxVays3l2mcZGN4anNzaHhfMzFyZjlwcXpkbg&hl=en
Students should continue to study notes and material from Chapter 5 Plate Tectonics. TEST in Tuesday, October 6.
