8. Historically there have been other theories besides plate tectonics to explain the current state of the earth. Go to: http://scign.jpl.nasa.gov/learn/plate2.htm
9. What are the earlier theories leading up to the discovery of plate tectonics?
11. Each plate touches at least two other plates and interacts on something called the plate boundary. Go to: http://www.platetectonics.com/book/page_5.asp
12. Discuss the various types of plate boundaries. Give a real-world example of each. Drawings are welcome.
13. Watch the animations of how the plates have moved through the main eras. Go to: http://www.ucmp.berkeley.edu/geology/tectonics.html
24. Understanding the rock cycle is fundamental to understanding plates. But you will also be able to understand the rock cycle when you understand plate tectonics. Let’s apply our knowledge. Go to: http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html