Introduce your students to the power and beauty of tornadoes with the tornado tube. This unique device is a must-have for any science classroom or lab. To use, simply screw the device onto a plastic soda bottle that is two-thirds full of water, then attach an empty plastic soda bottle to the other end. With just a quick swirl of the upper bottle, students can watch in amazement as a tornado forms right before their eyes. NOTE: Bottles are not included with the tornado tube. This hands-on demonstration allows students to better understand the physical properties and movement of tornadoes, making it an essential tool for any science curriculum. Get your tornado tube and bring the power of tornadoes to your classroom today!