As the gas escapes, the fire will emit an audible pop or crack. When the wood is burned, combustible gasses will be released. As the wood burns the moisture is heated, and as the moisture is heated it expands and turns into gas.
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And, in these moments, the popping and crackling picks up and increases until the moisture in.
Gas needs more space as it expands into the pocket trapped inside the wood.
Typically, when the moisture in the wood is high, the pops and crackling noises are a lot more frequent.Some will get stuck in the wood. Normally, when temperatures and humidity levels fall again, your floor will pop back.These gases escape either by an explosion or by finding their way through holes caused by insects.
The holes created by the insects will give the gasses an escape route.In basic terms, it has something to do with the combustion gases escaping from the wood. Gas is created by trapped moisture locked in small pockets within the wood.This is because the moisture in the wood begins to evaporate quickly, while also pushing the moisture out of the wood in the form of more steam.
Once the gas pressure builds up it will create an energy burst with mini explosion.
