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.
Like the sound of it?
Why not check out the full worksheet in one of our popular e-books?
This particular science project can be found in any of the following Experiland e-books:
Experiland e-books contain detailed steps, including illustrations, to complete the science projects from start to finish.
