• Question: Why dose crisp crunch?

    Asked by rhasea to Tiffany, Hitesh, Hywel, Mae, Nik on 18 Jun 2012.
    • Photo: Mae Woods

      Mae Woods answered on 18 Jun 2012:


      Crisps Crunch because they are quite hard.

      This all has to do with forces. If you press down on a cushion what happens? The cushion gets squashed right? No sound there just a squashed cushion. However, if you press down on a crisp, the crisp breaks and makes a crunching sound right?

      Scientists understand this difference by using something called mechanics. Mechanics looks at how pressing hard on objects changes the objects shape and properties.

      If objects are made up of tightly packed atoms and molecules, a large force will break them. Otherwise if objects are made up of loosely packed atoms and molecules a force acting on them will make them more tightly packed rather than breaking them.

      The crunch is the energy released from the breaking of the crisp and this can be completely understood with mechanics and equations.

    • Photo: Hitesh Dave

      Hitesh Dave answered on 20 Jun 2012:


      Apart from science I just love the cruchy crisps…It is all mechanics as Mae mentioned…

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