Energy efficiency

Property of Polyurethane foams Uses
Lightweight - Furniture, soles of shoes
- Inside the walls of refrigerators
- Insulation materials for roofs, walls

Experiment: 

- Get two small light cardboard or wood boxes.
- Spray polyurethane foam in one of them and let it dry.
- Place both boxes on top of a layer of ice-cubes.

Leading questions:
- Can you feel cold on the top side of the box?
- Can you explain what's happening?
- Can you set up other easy experiments that show energy efficiency in action?
- Can you find applications of this property in your house or city?

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Key documents

Guidelines