Question

when coal burns particles of soot rise up above the fire and make smoke why doesnt the smoke move along the ground?

Answer 1

The soot particles very light , lighter than air so the rising hot gasses from the fire drag the particles upwards with them.

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Answer 2

when the coal burns,the particals of soot rise up above bcuz the soot particles are very light and less in weight.so the particals are rise up...