A singing balloon experiment is an effective way to find out how sound works. In the event you put a small coin inside a balloon and spin it, the coin spins across the balloon, making the balloon vibrate in a short time. Objects that vibrate shortly make a excessive pitched sound. Because the coin slows down, the pitch of the sound will get decrease. Kids can hear how the sound adjustments because the coin slows contained in the balloon.
Singing balloon sound and pitch investigation
You will want
A balloon
Small coin
Directions
Stretch the neck of the balloon and thoroughly put the coin inside.
Blow up the balloon ( ask an grownup to assist ).
Fasten the top of the balloon so the air can’t escape.
Maintain the balloon on the high and thoroughly spin it in circles. Take care when doing this, as if the balloon bursts, the coin will fly out at excessive velocity.
Take heed to the sound the balloon and coin make.
You need to discover the pitch drops because the coin slows down.
What’s occurring?
When the coin spins quick, the balloon vibrates shortly, making a high-pitched sound. Because the coin slows, the balloon vibrates much less, and the pitch drops.
Extra science experiments for studying about sound
Discover out how one can see sound utilizing rice and a drum.
Make a straw flute with straws and tape! The pitch of the sound adjustments with the size of the straw.
Check completely different supplies to seek out out that are the finest for muffling sound.
Final Up to date on March 7, 2025 by Emma Vanstone
