[Free Registration/Login Required] Overview: In this lesson, students will learn the basics about how tornadoes are formed, and when and where they are most likely to occur. They will learn that the United States is the country most vulnerable to tornadoes and why most tornadoes occur in tornado alley. Students will also learn safety measure to take in case of a tornado. Connections to the Curriculum: Geography (map skills), earth science, math (calendars, percents, reading tables), language arts (presenting an idea to a group.) Connections to the National Geography Standards: Standard 7: The physical processes that shape the patterns of Earth's surface Standard 15: How physical systems affect human systems