http://www.photolib.noaa.gov/nssl/tornado1.html
Tornadoes Photo Library - four galleries of tornado pictures from the National Severe Storms Labratory.
http://www.nationalgeographic.com/eye/tornadoes/
Eye in the Sky: Tornadoes - learn about tornadoes, their environmental effects, and the science behind them, from National Geographic.
http://whyfiles.org/013tornado/index.html
Tornadoes: Going Around in Circles - from the Why Files. Includes info on what causes tornadoes, how they get their energy, twister glossary, a quiz, and more.
http://teacher.scholastic.com/activities/wwatch/tornadoes
Weather Watch: Tornadoes - get the tornado basics, learn how to be ready in case one hits, read what the experts have to say, and more.
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