US Search and Rescue Task Force sponsors site on predicting weather. It includes information about What is the Weather?, Weather tools, Cloud types, Weather types.
Interactive from National Geographic - students create their own tornadoes based on appropriate conditions for a tornado. Also includes case study activities.
Coriolis Effect - This site provides a definition of the Coriolis Effect; talks about air; describes the Coriolis in the real world; and provides a quiz. Caution - some spelling errors but visuals are good.
Shape It Up is one of many good educational games and activities on Kinetic City. Shape It Up is an activity that would be good for use in an elementary school Earth Science lesson. The activity presents students with "before" and "after" images of a piece of Earth. Students then have to select the force nature and the span of time it took to create the "after" picture. If students choose incorrectly, Shape It Up will tell the student and they can choose again.