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The combustion reaction heats the air, causing the air molecules to vibrate faster and move further apart. This means that the gas in the flame expands and becomes less dense than the air around it, causing it to rise.
Ellen Funk
Wiki User
∙ 6y agoBecause heat rises. Whether its a flame on a candle or a fireplace, the heat makes the flame rise up.
The base of a flame is where oxidation of the wax occurs which is an exothermic reaction, this means potential energy is lost from the wax as heat.
The heat released is most concentrated at the base which causes vaporisation of the wax to occur and oxidation occuring in the vaporised wax which is a form of positive feedback (the more vaporisation, the more vaporisation that can occur)
As the gaseous wax is hotter than the surrounding than the surrounding air it means that it rises since as upthrust is produced, this is why the flame rises upwards rather than any other direction.
The flame is the excitation of electrons due to the high temperatures, and when the nearby gases cool the temperature decreases so the electrons return to their ground state and release energy in the form of photons (light).
Wiki User
∙ 11y agoThe combustion reaction heats the air, causing the air molecules to vibrate faster and move further apart. This means that the gas in the flame expands and becomes less dense than the air around it, causing it to rise.
Wiki User
∙ 12y agoPut simply, heat rises. The combustion reaction of the fire heats the surrounding air causing those air molecules to move faster with a lower pressure and lower density. Just as air bubbles rise in water, these heated "bubbles" rise through the cooler air.
Wiki User
∙ 12y agoFire or flames are the results of combustion and generates heat, the air and the flame are hot from this combustion, in an atmosphere hot gases are lighter then cold gases, The hot air is lighter than the colder air and raises to a greater height then the colder air, The results is that the flame appears to be pointing upwards when in fact its the hot gases raising upward as they are lighter.
The exception to this is like a gas welding torch which the pressure of the release gas pushes the flame in the direction of the torch head due to the pressure behind it.
Wiki User
∙ 7y agoYes, because the hot air in the flame rises because it is lighter than the cold air above. The wax particles of the smoke may be denser than air but they get carried up in the hot air of the flame.In zero gravity, there is no rise of hot air so in this case like on the space station the flame would be round in shape, like a spherical dome.
Wiki User
∙ 15y agocause if burns the other water it will go out
Wiki User
∙ 10y agoThat's because of gravity. The gravity pulls the heavier air down, so the lighter (hotter) air is pushed up.
Wiki User
∙ 14y agoThat is because gravity pulls downwards. The hot gas in the flame is lighter than the surrounding air, so the air pushes it up.
Wiki User
∙ 7y agobecause heated substaces always goes upwards
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What is the cold can a flame be?
A flame cannot be any cold but always hot even at the first instant it is lit.
How the viscosity ease of ignition and smokiness of the flame changes as the boiling points of the fractions increases?
Black magic.
Why do flames burn upwards?
In a gravitational field, flames usually burn upwards because the hot gases in the flames are less dense than the surrounding gases, hence buoyant forces cause the hot, luminous gases (which we see as the flame) to rise. In a zero gravity environment, the direction of the flame is not necessarily "up" since "up" is arbitrary without a gravitational field.
A comets tail points to what?
Away from the sun.
Why do porcupines always win at games?
because tehy have the most points
Why the direction of flame is in upward?
A flame's direction is upwards because heat rises.
Why flame on a candle burns erect?
The flame heats the air and it is lighter so it goes upwards.
Why does flame burns upwards?
The flame burns "up" because it is really the hot gasses that are burning and hot gasses rise because they are less dense.
Why do bubbles shoot upwards when flame is under it?
hot air rises cold air sinks
What does semper sursum mean?
Always upwards; always above.
What is a trend on a scatter graph?
Its when the datas points are going upwards or downwards
Why flame upwards in candle?
The flame goes up from a candle due to the buoyancy effects of the hot gases in the flame. Interestingly when experiments are run in microgravity (like on the ISS), a flame will just be spherical with no particular orientation since there is not enough gravity to make any buoyancy manifest.
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Flame Point Ragdolls kittens can cost upwards of 1,000 dollars as of June 2014. The exact price varies depending on the seller.
Are three points always collinear?
No but they are always coplanar.
Is their always a flame burning on oil drilling rigs?
No not always; the flame is the rig (or FPSO) burning off the gas which comes up with the oil.
What is the effect of elemental Hero flame wing man?
When Elemental Hero Flame Wingman destroys a monster in battle, the opponent loses life points equal to half the destroyed monster's attack points.
Bunsen burner blue flame?
The blue flame of the Bunsen burner is when it is hottest. The yellow flame is the safety flame. you should always start the burner on the safety flame which is produced when the holes on its base are closed.
