Product Description
Video and lesson investigations on the topic of wind and energy. Key concepts include:
- Model windmills can be made to move like real windmills.
- Sails make use of energy from moving air.
- Some sails turn round or spin and are linked to moving machinery.
- Others are fixed to objects that move along themselves.
- The force of wind can be utilised to provide power for machines.
- Making models is a good way of demonstrating the properties of air moving. Sails can be made in many different forms.
- They need control devices to be efficient.
- Sails on windmills work different to those on yachts.
- A boat made of relatively heavy materials would not move if its sails were very small.
- By using bigger and more sails, more of the wind force is captured, to the point where the boat would move.
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