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Force, pressure and surface area - shoes
The presenter demonstrates the relationship between force, pressure and area using shoes with different sized soles and a sand box. The shoes with the largest sole area don't sink into the sand as much because the pressure they exert per unit area is less.
Use this clip as a starter lesson on pressure. Pupils could think of situations where the pressure exerted needs to be minimised with specialised footwear, and how this is also replicated in the animal kingdom.
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