Toy from Trash – Oriya
By Robolab Technologies In Atal Tinkering Labs ATL, More InfoThis is not a “storm in a teacup” but a tornado in a bottle. Tape two bottle lids back-to-back and make a through hole. Screw two big bottles on the lids. The lower bottle should be filled with water. Upturn and give the bottles a circular shake. A tornado will swirl and spin giving you a feel for a real tornado.
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