Straw Through a Potato

Can you punch a hole through a potato using only a straw?

 

Equipment

  • 2 drinking straws
  • A firm, raw potato

 

Method

  1. Place 2 Lollipop sticks together and fix at each end with 2 elastic bands
  2. Cut a straw and insert 2 short pieces into the gap between the lollipop sticks
  3. Blow through the gap
  4. Can you hear a sound? What happens if you move the 2 straws closer together or further apart? Does the noise change?

 

The Challenge

To try to punch a hole in a potato using only a drinking straw

 

how does it work?

Covering the top of the straw with your thumb traps air inside, forcing it to compress as you stab the straw through the potato skin. This creates enough rigidity within the straw to pierce the potato.

 

*taken from www.jamesdysonfoundation.co.uk challenge cards series