1. Bell Questions 9/21/11 1.What do the strips in the model you made yesterday represent? 2.What are two of the three causes of plate motion? 3.List the three different kinds of tectonic plate boundaries.

2. Reshaping Earth’s Crust 1.Rifting the process by which Earth’s crust breaks apart

3. 2.Cratons large areas of stable rock at the center of continents

4. 3.Terrane a piece of lithosphere that has a unique geologic history. 4.Accretion The terrane is scraped off of the subducting plate and becomes part of the continent.

5. Effects of Continental Change When continents move, the flow of air and moisture around the globe changes. As continents rift or as mountains form, populations of organisms are separated. When populations are separated, new species may evolve from existing species.

6. Supercontinent Cycle

11. Locations of Earthquakes in South America, 2002-2003