Comments on: Without human intervention, how do fires start in nature?

By: ty_rosewood

ty_rosewood — Tue, 22 Dec 2009 05:48:59 +0000

Lightning is the main reason. However, dry heat is a possibilty. Every object (or nearly every object) has a combustion point (or temperature). Once the surrounding air reaches a certain temperature, the object spontaneously combusts.
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By: bad bob

bad bob — Tue, 22 Dec 2009 05:09:59 +0000

as fare as i know lightning is the only way unless a squirrel caused a spark rubbing his nuts
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By: Spartacus

Spartacus — Tue, 22 Dec 2009 04:22:59 +0000

Spontaneous combustion can occur without the aid of an external flame. Around us we have heat, fuel and oxygen, everything required to create fire. The only reason the chair your sitting on doesn’t burst into flames is because the mixture of these three elements is not correct.
Once the mixture of these three are correct, ( between the upper and lower limits of flammability) you will have a fire.

This is one reason why these forest fires take place. The sun is so strong (heat), on the forest floor (fuel), that it only takes the wind (oxygen) to set it alight.
Hope you enjoyed your first lesson in the chemistry of fire. It’s called the "Triangle of Combustion".
By the way, to extinguish combustion you must remove one of the three elements. That’s why it’s so tough for those brave firefighters’.
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By: crispy1

crispy1 — Tue, 22 Dec 2009 03:39:59 +0000

Lightning, volcanic activity and hot air outta Bush's mouth all contribute.
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By: Jonathan

Jonathan — Tue, 22 Dec 2009 02:57:59 +0000

It'll be those damn dirty apes banging rocks together again! One spark from a piece of flint and it's bye-bye tree house.
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By: JOAN C

JOAN C — Tue, 22 Dec 2009 02:33:59 +0000

Why no news of fires in Brazils Amazon forests?
The fires in California are serious and are causing much hardship but are tiny compared to the forest fires in Brazil that have closed airports, filled hospitals and threaten to change the WORLD’S climate.

Why no news?

Try this link;

http://news.mongabay.com/2007/1016-amazo...
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By: chinabear

chinabear — Tue, 22 Dec 2009 01:47:59 +0000

Lighting can cause fire, specially when the area is very dry.
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By: mark_2001nz

mark_2001nz — Tue, 22 Dec 2009 01:05:59 +0000

usually by lightning strikes….but somwtimes its just combustion…fires in the forests that start without human intervention are usually natures way of cleansing the Earth.
After all they have been around since before man
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By: Octavia Poppadom

Octavia Poppadom — Tue, 22 Dec 2009 00:19:59 +0000

It could be lovers when they meet an old flame.
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By: sean w

sean w — Mon, 21 Dec 2009 23:54:59 +0000

heat from the sun can make very dry vegetation catch alight also lightening strikes.
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