Why does a whistle make noise?
A whistle makes noise because air inside it shakes back and forth super fast.

Pip’s answer
- A whistle makes noise because air inside it shakes back and forth super fast.
- When you blow, air zooms in and hits a sharp edge. Whoosh!
- The air flips and wiggles, making sound waves that fly to your ears.
- Wow-ee, a tiny whistle can be heard all the way across a big field!
For grown-ups
When you blow into a whistle, air hits a sharp edge and splits, swirling back and forth very quickly. This makes the air vibrate, creating sound waves. Many whistles have a chamber that makes the vibration stronger, and some contain a little ball that makes a trilling sound.
Ask your child: Can you whistle with your lips?
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- 🍎Why do things fall down?
- 🧲Why do magnets stick?
- 🫧Why are bubbles round?
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