Science Projects And Inventions

YOU NEED:

• A Cork                     

• A Knitting Needle

• Four, thin pieces of plastic                           ;

• Proximity to a tap

Bore a hole through the centre of a cork and insert a knitting needle through it. Make six slits on the surface of the cork and wedge thin slices of plastic into each slit. Hold the turbine under a steam of water. The turbine rotates as

the water hits the vanes. The speed will depend upon how fast the water flows. This is how water falls from the top of the dams on large water turbines which rotate and generate electricity.

HOW DOES IT WORK?

The knitting needle passing through the cork serves as a central shaft that allows the cork to rotate. As the

water falls on the thin strip of plastic, it pushes it down. This makes the cork rotate and the next strip comes

under the flowing water, this is again pushed down by the pressure of water and the cork continues to rotate.