Equipment:
- Candle
- Inside of a toilet roll
- 2X elastic bands
- Scrap paper
- A pencil
Steps:
- Fit two pieces of paper to the ends of the toilet roll and attach them with the elastic bands - when you are done it will look like a small drum
- Make a small hole on the middle of one of the paper ends. You have now made a simple sound gun
- Light the candle
- Hit the closed end of the toilet roll with the top of your pencil
- Aim the open end of the toilet roll at the candle
- Watch
Focus Questions
- What do you see when you aim the sound gun at the candle?
- What is happening?
- Why does this happen?
- What does this tell us about how sound travels?
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