Order now at http://www.stevespanglerscience.com/product/1192 Twirl this 30-inch plastic “hose” over your head at different speeds and make at least five different tones, depending on how fast you can twirl! This is a fun science activity that’s also guaranteed to get your arm in shape!
Centripetal Force Board – Sick Science! #191
UV Beads – Color Changing Beads
Tornado Tube – Vortex in a Bottle
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