With this simple Tornado Kit and two soft-drink bottles, your students can experiment with vortex action!Test the effects on air and water with this experiment.
 
A small rotation of the bottles creates a centrifugal force, which keeps liquid away from the exact centre of the tube.
 
Please note that bottles are not included in this kit.
 
This Tornado Kit joiner piece is designed to fit with most generic, large soda bottles.