Why does a kettle make noise while the water is heating up?

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The water is completely still until the later stages of boiling, but there’s this rising noise from very early on.

In: Engineering

3 Answers

Anonymous 0 Comments

The kettle is designed with a tiny hole in it; as the amount of steam from water boiling increases, the steam is forced out of the hole and makes a whistling noise. The kettle might also make a noise from simply boiling, in which case it would sound like it was bubbling.

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