Science Experiments

A New Spin on Water

By Lois Wickstrom
Photo by PhotoObjects.net/Jupiterimages Unlimited

A New Spin on Water

 

 

 

Choose two balls that float—a tennis ball and a smooth ball about the same size. See which surface creates less friction. Float the balls on water and spin them. Which ball spins faster? Which spins longer? That ball's surface creates less friction.