Why fire moving upwards ?

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Why fire moving upwards ?

2007-02-23 05:06:14 · 3 answers · asked by manas d 1 in Education & Reference ➔ Other - Education

3 answers

When atoms get hot their vibration causes them to be further apart. This makes a given volume lighter because atoms have weight, even air and less can fit in the same space. The hotter it is the more they vibrate and the further they are apart,... the lighter the space becomes.

The cooler air is heavier and pushes up the hot air.

2007-02-23 05:11:23 · answer #1 · answered by Ron H 6 · 0⤊ 0⤋

heat rises, as it is less dense than cold in, this is not absolutely true but well enough for our purposes, the heat rises and the fire ensues...

2007-02-23 05:10:33 · answer #2 · answered by lawrence_deleeuw 1 · 0⤊ 0⤋

heat rises.

2007-02-23 05:08:21 · answer #3 · answered by Anonymous · 0⤊ 0⤋