Why does the flame always point upwards?
When we light a candle or lamp or the matchstick, we can observe the flame is always pointed upwards.
Why ?
Heated gas is lighter than cold gas. When a substance is burnt, the temperature of substance rises.
Heated gas goes up. Its place is taken up by surrounding cold air which also goes up if the substance is continously heated.
It is called Convection.
Since it is a continuos process, it appears as if the flame is pointed upwards. Flame is rising from high to lower pressure region.
Because of gravity, hot air goes up. In space , the flame is spherical as there is no gravity.
When we light a candle or lamp or the matchstick, we can observe the flame is always pointed upwards.
Why ?
Heated gas is lighter than cold gas. When a substance is burnt, the temperature of substance rises.
Heated gas goes up. Its place is taken up by surrounding cold air which also goes up if the substance is continously heated.
It is called Convection.
Since it is a continuos process, it appears as if the flame is pointed upwards. Flame is rising from high to lower pressure region.
Because of gravity, hot air goes up. In space , the flame is spherical as there is no gravity.
