Books:                                        

Berry, K. M. (2008). Georgia Earth Science. Austin, TX: Holt, Rinehart, and Winston

Feather, Snyder, Zike, R. M., S. L., D. (2008). Georgia Science. New York, New York: Glencoe McGraw Hill.

Padilla, M. J. (2009). Georgia Earth Science. Upper Saddle River, NJ: Pearson Prentice Hall.

Trefil, J. (2008). Earth Science. Evanston, IL: McDougal Littell

Wolfe, S (2003). Concepts and Challenges Earth Science. Parsippany, NJ: Globe Fearon

Websites:

Cooltext buttons and logos. Retrieved March 27, 2008, from Cooltext Graphics Generator Web site: http://cooltext.com/

Edwards, Roger The Basics about Tornadoes. Retrieved February 12, 2008 , from The Online Tornado FAQ Web site: http://www.spc.noaa.gov/faq/tornado/#The%20Basics

2005-2006). www.georgiastandards.org/. Retrieved Feb.28, 2008, from Georgia Department of Education.

Lovett, Richard A. ( May 8, 2007 ). How Kansas Tornado Became a Monster. Retrieved March 21, 2008, from National Georgraphic News Web site: http://news.nationalgeographic.com/news/2007/05/070508-tornado-kansas.html

( May 7, 2007 ). F-5 Tornado Wipes of 95% of Greensburg, Kansas. Retrieved March 20, 200, from NaplesNews.com Web site: http://www.naplesnews.com/news/2007/may/07/f5_tornado_wipes_out_95_greensburg_kansas/

Theiss, Mike (2007). Tornado Damage Stock Photos. Retrieved March 20, 2008, from Ultimate Chase Web site: http://www.ultimatechase.com/Chase_Accounts/Greensburg_Tornado_Damage_Survey.htm

Retrieved March 27, 2008, from Animation Factory Web site: http://www.animationfactory.com/en/

Retrieved February 14, 2008 from Backgroundcity.com website: http://backgroundcity.com

Think Quest Library. Retrieved March 6, 2008 , from Tornado Formation Web site: http://library.thinkquest.org/J001393/tornadoes/tornado_formation.htm