Examine how wind-up toys work. Inside each toy is a torsion spring that stores energy by being wound, then releases that energy as it unwinds which the mechanisms inside the toy turn into movement.

Mr. O’s “O Wow Moments” help you to become an scientist at home with hands-on, minds-on experiments and demos! Watch Mr. O every Saturday morning during the 7 a.m. news on Houston's KPRC Local 2 to see a new science demo you can try at home. Share your experiments with us on facebook and Instragram!