Tornado Tube – Vortex in a Bottle
Order now at http://www.stevespanglerscience.com/search?sSearch=tornado+tube&sClass=Product&sType=&submit.x=0&submit.y=0 Create a tornado in a bottle! With this colorful plastic tube, learn about the science of vortex energy, the swirling, twisting and spiraling action that can be found everywhere in nature.
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