Sound Experiment

You will need:

- two people

- a stopwatch

- two medium size stones

Instructions:

1. Person 1 has the stopwatch

2. Person 2 stands 200 metres away with the stones

3.At the same time Person 1 turns on the stopwatch and person 2 bangs the stones together

4. When person 1 hears the noise from the stone they stop the clock

5. This has measured the time it took for the sound to travel

6. You can do this over again and person 2 can move further away

By Josh