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LOVE MANY, TRUST FEW, PADDLE YOUR OWN CANOE

Drive a paddle boat with the energy stored in an elastic band

Suitable For

Grade 6

Difficulty

2

Time Required

 <2 Days

Supervision

Advised

What’s it about?

Make a ‘rotor-propelled’ paddle boat that is driven by the elastic energy stored in a rubber band. In this science experiment we will learn how elastic energy is converted into kinetic energy. As the elastic energy in the rubber band is released, the rotor or paddle of the boat is turned setting the boat in motion:

Topics covered

Elastic energy, Kinetic energy

What will I need?

  • PLASTIC SOFT DRINK BOTTLE
  • SCISSORS
  • ELASTIC BANDS
  • 2x WOODEN ‘DOWEL’ STICKS
  • WATERPROOF STICKY TAPE
  • PLASTIC TUB LID

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

This science experiment works because rubber bands can provide potential elastic energy, which is then converted to kinetic (velocity) by twisting or stretching it. The ‘boat’ is driven by the energy stored in the twisted elastic band. As the elastic unwinds, it releases its elastic energy and the paddle is turned. The paddle pushes the water backwards and the boat forwards. If you wind the paddle clockwise, the boat will go backwards.

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