Green Fire Tornado or Fire Whirl

Make a tabletop fire tornado, fire whirl or fire devil using simple household materials. You can even color the flames green! This easy science project illustrates how real tornadoes, fire whirls and waterspouts form. Usually a difference in temperature in a fluid medium creates a current. Since motion rarely occurs straight up or straight down, it is natural for a vortex to form. In this project the vortex is produced by spinning a mesh cylinder. The air that enters the cylinder rotates at a different rate