Science experiment: Bottle flute

Making music does not have to be a terribly noisy experience. Making music with these glass bottles can actually be quite pleasant. Give it a go and see if you can make a tune to impress.

What you need:

• 2 (or more) glass bottles
• water

Number of players:
1+

Activity:

Fill the glass bottles with different amounts of water, without filling any to the top.

Blow gently across the top of the bottle so that you can hear a note.

Now blow gently across all of the bottles. They should all make different notes. Why?
Because blowing air inside the bottle makes the water vibrate, creating the note.

Image from Shutterstock