Smoke is hot air. Therefore, hot air always rises up because hot air is lighter than cool air.
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short answer:
A fire makes things hot. Above a fire, you get quite a lot of hot air. Hot air is less dense than cool air, so it rises. long answer: A fire makes things hot. Above a fire, you get quite a lot of hot air. Hot air is less dense than cool air, so it rises. Because there is quite a lot of hot air, it makes quite a big wind current as it rises, and that drags the smoke particles upward with the air, in much the same way as wind can raise dust. Some of the smoke particles are very small indeed, so they can be held up in the air for quite a long time, and they do not settle out from the air until a long time after they leave the fire, and usually some distance away from the fire. hope you find some help!
A fire makes things hot. Above a fire, you get quite a lot of hot air. Hot air is less dense than cool air, so it rises. long answer: A fire makes things hot. Above a fire, you get quite a lot of hot air. Hot air is less dense than cool air, so it rises. Because there is quite a lot of hot air, it makes quite a big wind current as it rises, and that drags the smoke particles upward with the air, in much the same way as wind can raise dust. Some of the smoke particles are very small indeed, so they can be held up in the air for quite a long time, and they do not settle out from the air until a long time after they leave the fire, and usually some distance away from the fire. hope you find some help!
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