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Why does fire go against gravity?

 
 
mngunim
 
Reply Fri 11 Apr, 2008 08:20 am
If you light a candle and invert it.. Fire still goes up, why is that?

I got my own explanation but lets hear what anyone has to say..
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Type: Discussion • Score: 0 • Views: 9,404 • Replies: 32
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Ragman
 
  1  
Reply Fri 11 Apr, 2008 08:34 am
heat rises
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ebrown p
 
  0  
Reply Fri 11 Apr, 2008 10:33 am
This is just more proof that the "theory" of gravity is a myth.
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Phoenix32890
 
  1  
Reply Fri 11 Apr, 2008 10:39 am
Quote:
On Earth, gravity determines how the flame burns. All the hot gases 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. If you were to light a fire in a microgravity environment, say onboard the space shuttle, it would form a sphere!


http://science.howstuffworks.com/fire.htm/printable
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Chai
 
  1  
Reply Fri 11 Apr, 2008 01:00 pm
yeah, it's combusting and everything.
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fishin
 
  1  
Reply Fri 11 Apr, 2008 01:01 pm
Fire is GOD! It can do ANYTHING!
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McTag
 
  1  
Reply Fri 11 Apr, 2008 03:04 pm
My fire goes down.

But my gravity goes up.

Oh! I'm standing on my head.
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rosborne979
 
  1  
Reply Fri 11 Apr, 2008 05:39 pm
Re: Why does fire go against gravity?
mngunim wrote:
If you light a candle and invert it.. Fire still goes up, why is that?

For the same reason hot air balloons rise; relative density and displacement of mass. The answer Phoenix gave is accurate and more detailed.
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dadpad
 
  1  
Reply Fri 11 Apr, 2008 06:24 pm
What happens if you light a fire in Australia? where everything is upside down?
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littlek
 
  1  
Reply Fri 11 Apr, 2008 06:39 pm
it turns counter-clockwise.
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Ragman
 
  1  
Reply Fri 11 Apr, 2008 07:39 pm
dadpad wrote:
What happens if you light a fire in Australia? where everything is upside down?


Why else do you think Kangaroos go hoppity-hop?
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JLNobody
 
  1  
Reply Fri 11 Apr, 2008 09:08 pm
Fire goes "up" against gravity because if it went "down" it would put itself out. Laughing
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Ragman
 
  1  
Reply Fri 11 Apr, 2008 09:20 pm
BRILLIANT
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JLNobody
 
  1  
Reply Fri 11 Apr, 2008 11:29 pm
Thanks, RM. Pardon my advanced physics.
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McTag
 
  1  
Reply Sat 12 Apr, 2008 01:00 am
Fire goes up because the chimney is above it.

Otherwise your house would be full of smoke and your floor all charred, silly.
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JLNobody
 
  1  
Reply Sat 12 Apr, 2008 02:46 pm
There you go, more down home common sense physics.
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Phoenix32890
 
  1  
Reply Sat 12 Apr, 2008 02:52 pm
McTag wrote:
My fire goes down.

But my gravity goes up.

Oh! I'm standing on my head.


Funny you should mention that. I figured that if a person stands on his head 12 hours a day, he will neutralize the force of gravity. Therefore, when he is older, nothing will sag. Laughing
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JLNobody
 
  1  
Reply Sat 12 Apr, 2008 03:01 pm
FAT CHANCE! But I like your optimism.
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g day
 
  1  
Reply Sat 12 Apr, 2008 08:19 pm
"What happens if you light a fire in Australia? where everything is upside down?"

We crack tinnies and down them, throw some meat on the fire, ogle shielas, swat flies and argue about sport - what else would you want to do?
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JLNobody
 
  1  
Reply Sat 12 Apr, 2008 11:21 pm
How hard is it to juggle in Australia?
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