Fire and Gravity
Few things capture a student's attention and curiosity more than fire - especially after the fire drill Nov 12. This fire tornado in Earth Science class demonstrates how gravity pulls cool dense air down which forces the hot gases of the flame up. Gravity pushes warm air up - there is no magical rising force in nature. It also demonstrates the way air (and water) flows better in a spinning vortex, like a tornado (which also does not suck - but gravity pulling cool air down pushes less dense warmer air up into the tornado).