a lamp or candle light is always upward and the heat in more near the tip why is it?
2007-02-26 22:50:08 · 5 answers · asked by murugaiah p 1 in Science & Mathematics ➔ Physics
convection
hot air rises
2007-02-26 22:53:32 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The flame of a candle consists of hot gases formed by the burning of wax. Since the hot gases are lighter than air they tend to go upward. Therefore, the flame remains upward even if you tilt the candle.
If you light the candle inside a spacecraft (assuming it contains air inside) which is orbiting he earth, everything, including the air and the hot gases produced by the burning wax will be weightless, and the flame will not point upward. It will just surround the wick.
2007-03-02 02:45:00 · answer #2 · answered by Bharat 4 · 0⤊ 0⤋
The candle takes it's fuel (wax) from the wick of the candle by capillary action, this is then combusted by sucking in the air (or oxygen from the air) from above.
The density of the flame is less than that of the surrounding air and therefore burns upwards.
This can be siad of any combustion process with naked flames i.e. gas cookers, bunsen burners, cigarette lighters etc...
2007-02-26 23:13:03 · answer #3 · answered by Doctor Q 6 · 0⤊ 0⤋
The flame is always upwards because hot air rises up.
2007-02-27 01:28:55 · answer #4 · answered by Sunitha 1 · 0⤊ 0⤋
bcoz to light a candle oxygen is needed.oxygen is present upside not downwards
2007-02-26 23:02:07 · answer #5 · answered by Anonymous · 0⤊ 0⤋