why the flam of fore gose up not down? plzz answer this
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The hot gases and air in the flame are much hotter (and less dense) than the surrounding air, so they move upward toward lower pressure. This is why fire typically spreads upward, and it's also why flames are always "pointed" at the top.
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A flame of fire keeps pointing up because it heats the surrounding air, creating streaming currents around itself. Warmer air is thinner and lighter than cooler air, since gas molecules spread out when they gain energy. As the heated air near a flame expands, it also rises, since it's lighter than the air around it
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