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Description

Not what you think! Compare cotton and synthetic t-shirts weight when wet and dry

Resources

Cotton and synthetic t-shirt
Bowl of water
Coat hangers
Scales
Print of attached record card

Instructions

Weigh t-shirts dry, then wet.
Hang on hangers and leave to dry then reweigh
Demonstrate that synthetic materials repel water and so dry much quicker and so are better suited to adventurous activities in the outdoors.
Weight is relevant in terms of how much you carry. How quick you dry is relevant to keeping you warm.

Tags

• clothing
• expedition

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