A campfire makes a crackle sound because the wood inside it is expanding and contracting as it burns. When you hear that snap or pop, it means a piece of wood has just broken apart from the heat. It’s like when your skin feels tight after sitting in the sun for too long, only this time, the fire does the snapping!
Examples
- A stick in a fire snaps loudly when it cracksle.
- The log breaks apart with a pop as it burns.
- You hear the fire 'crackle' every time a piece of wood bursts.
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See also
- How Does Sound Travel Through the Ocean?
- How Did ‘Loudness’ Become a Measurable Quality in Sound?
- What Causes ‘Sound’ and Why Do We Hear It Differently in Different Places?
- What Causes the ‘Creak’ of an Old Door?
- What Causes the ‘Crack’ of a Breaking Eggshell?
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