Blowing across the mouth of an open bottle can make sound. Try it! Can you hear a note?
What You’ll Need
plastic or glass bottle
What to Do
Blow across the mouth of an open plastic or glass bottle.
How It Works
If you direct your air stream just right, it will split, with some going inside and some going out of the bottle. The air in the bottle gets pushed by the incoming air. The air stream vibrates in waves, which you hear as sound.
