Works Cited
- http://www.enchantedlearning.com/subjects/volcano/
- https://www.youtube.com/watch?v=QUWdkHPm4os
- http://www.enchantedlearning.com/subjects/tsunami/
- http://www.vtaide.com/png/George/earthquake.htm
- https://www.youtube.com/watch?v=faADIW34DC0
- http://www.geology.wisc.edu/courses/g115/projects03/emgoltz/definition.htm
- http://geography.about.com/od/physicalgeography/a/erosion.htm
- http://www.youtube.com/watch?v=G5Rp9MJJGCU
- http://www.nature.nps.gov/geology/usgsnps/misc/gweaero.html