Children may have heard stories about tornadoes that can carry entire houses away and set them down somewhere else, like on top of a nasty witch. But do they understand how tornadoes form? With the Tornado Tube from Steve Spangler Science, children of age four and up can create a water bottle tornado that they can see right in front of them. All it takes is a couple of one-liter bottles that are connected with the Tornado Tube and some water. Inverting a full bottle and applying a swirling action creates an energy pattern that mimics that of a real tornado. Vortexes form frequently in nature, and we see them in natural whirlpools in rivers, in some weather patterns, and even in astronomy in the activity of entire galaxies. They occur when there are differences in the speeds that fluids or gases are traveling, and with the Tornado Tube, children can watch it happen. Wow children in the classroom with this exciting tornado in a bottle experiment, or have children explore the wonders of weather on their own with individual tornadoes in a tube. Our Tornado Tube kit comes with multiple pieces, so you can create a classroom full of cyclone tubes all at once!