Today we made some musical straws. This is how we made them...
1. Flatten one end of the straw.
2. Cut the corners to make an upside down V
3. Blow through the tip of the straw to make a sound
4. Cut the bottom of the straw shorter and shorter and keep blowing
What did we notice?
The straw made different sounds.
As we cut the straw shorter the sound got higher and higher.
Shorter = high sound, Longer = lower sound
We found out that to make the sound the air inside the straw was vibrating.