NOAA
Noaa: Tornadoes, Nature's Most Violent Storms
This page, put out by the National Weather Service, thoroughly explains the causes and types of tornadoes. Tornado safety is covered in the form of warning signs and what you can do to stay safe both in school and at home. The full...
Discovery Education
Discovery Education: Understanding Tsunamis
Come and learn more about the devastating effects of tsunamis. This site features video segments revealing the devastation tsunamis can cause and how tsunamis are formed.