Why does the candle flame rush vertically upward?

The air heated by a candle flame rises up in calm weather, and cold air descends in its place, since the density of cold air is less than the density of cold air. Therefore, the candle flame is set vertically.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.