The Spinning Buzzer is one of my favourite experiments ever. Not only does it make an incredible noise but it’s so much fun to play with too!
What Do I Need?
- Elastic band (relatively thick)
- 2 lollipop sticks
- Piece of paper
- String
- Blu-Tack
- Scissors
- Tape
How Do I Do It?
STEP1 - Tape your 2 lollipop sticks securely together so they are the correct length to fit snugly inside your elastic band.
STEP2 - Next up, make your sail out of your paper. Measure the length of the lollipop sticks and make a sail of the same length and attach it to your lollipop sticks with some tape.
STEP3 - Connect a 1.5 metre length of string to your lollipop stick chassis by tying it round and securing it with some tape.
STEP4 - Add 4 super-small (about half a pea!) size pieces of Blu-Tac, one to each corner of your lollipop stick chassis.
STEP5 - Pop your elastic band onto your lollipop stick chassis. The Blue-Tac bits should mean there is a small gap between the elastic band and the lollipop stick.
STEP6 - Hold the string and swing your Spinning Buzzer around in a circle.
What’s Going On?
Did you get your Spinning Buzzer working? Sounds pretty cool, right?! But what’s causing the sound this time?
That’s right, something is vibrating (or shaking!) but what? What’s vibrating this time? What do you think?
If you thought the elastic band then you’d be absolutely spot on. When your Spinning Buzzer flies through the air, the air passes between the small gap between the elastic band and your lollipop sticks. This causes the elastic band to vibrate and makes that awesome noise!
More Fun Please! - Experiment Like A Real Scientist!
- What type of elastic bands works best?
- Do thicker/thinner elastic bands sound different?
- Could you make a giant spinning buzzer?
- How could you modify your sail to make your spinning buzzer even better?
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