Why Does Burning Wood Pop and Crackle?

Answer

Wood has small pockets of air and fluid in it. When it is burned, these pockets increase in pressure and pop and crackle as the pressure is released.
1 Additional Answer
Ask.com Answer for: why does burning wood pop and crackle
Why Does Burning Wood Pop & Crackle?
A log of wood contains small pockets of fluids such as water and sap. When the wood is placed on a fire and begins to burn, the fire heats the fluids, the same as if they were in a pan on the stove.... More »
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Q&A Related to "Why Does Burning Wood Pop and Crackle?"
A log of wood contains small pockets of fluids such as water and sap. When the wood is placed on a fire and begins to burn, the fire heats the fluids, the same as if they were in
http://www.ehow.com/how-does_4910112_does-burning-...
Vapor trapped inside the wood (mainly water) exerts pressure and causes the
http://www.chacha.com/question/why-does-burning-wo...
Wood contains small pockets of fluids such as water and sap. When the wood is placed on a fire, the fire heats the fluid,as if they were in a pan on the stove.
http://www.kgbanswers.com/what-causes-burning-wood...
The moisture within the wood expands and causes tiny "explosions" within the structure of the wood. Think of the phenomenon of corn popping but on a very, very small scale
http://wiki.answers.com/Q/When_wood_burns_it_crack...
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Wood has a very pleasant sound when it burns. The crackling sound when wood burns comes from the rapid expansion of air pockets in the wood. This pop is similar ...
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