We could make pepper jump by getting sound waves to transfer,
We covered a tin with cling film and then put pepper on top.
Then when we banged the tray with a spoon the pepper on the cling film danced.
To make the pepper jump higher we turned the tray to face the tin. This amplified the sound so the rice jumped higher.
It was interesting to see the pepper jump without being touched.
It was also interesting to see that sound waves can travel through the air.