Science Experiments

A New Spin on Water

By Lois Wickstrom

See which surface creates less friction.

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.

Photo by PhotoObjects.net/Jupiterimages Unlimited

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