Fire 2
Fire is a topic on which most people can comment. Fire is a widespread phenomenon. Most of us have seen fires in natural vegetation, or their effects; stark, blackened vegetation or a smoke pall. Because fires such as these can have damaging economic and social effects, can spoil forestry timber, can burn down houses and farms, and can kill people and animals, there has been a lot written about wildfires. Added to this wide perception of the damage that can be caused by wildfires, there has been increasing publicity given, since the 1950's, to the active use of fire as a management tool, particularly in protecting against severe wildfires. The introduction of a policy of deliberate ...
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fire as a disturbing force is itself influenced by the biota, particularly the plant community. Alteration of the vegetation by any number of factors can influence the nature of a subsequent fire. Fire has similarities to grazing as a force on vegetation because of such feedback effects (Whelan, 1995, 20).
Fire History
When cavemen learned to make and use fire, they could start to live in civilized ways. With fire, they were able to cook their food so that it was easier to eat and tasted better. By the light of torches, men could more easily find their way at night. They could also improve their wooden tools by hardening the points in fire. With fire to keep them warm, they could live in the colder regions and spread out over the Earth ([CD-ROM], 1996).
It is supposed that early people got fire accidentally from trees set ablaze by lightning or from spouting volcanoes. Then they carefully kept it burning in huts or caves. As far back as the study has gone, primitive peoples have ...
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if enough time is allowed. Iron will rust if exposed long to damp air, and the rust is simply oxidized iron. When the chemical combination is so rapid that it is accompanied by a flame, it is called combustion ([CD-ROM], 1996).
Ignition Point or Kindling Temperature
Heat is required to start combustion. The degree of temperature at which a substance will catch fire and continue to burn is called its ignition point or its kindling point. A substance that can be ignited in the air is said to be flammable (or inflammable). The flash point of a flammable liquid is lower than its ignition point. The flash point is the temperature at which it gives off sufficient vapor to flash, or ...
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"Fire 2." Essayworld.com. Essayworld.com, 19 May. 2008. Web. 28 Nov. 2024. <http://www.essayworld.com/essays/Fire-2/83913>
"Fire 2." Essayworld.com. May 19, 2008. Accessed November 28, 2024. http://www.essayworld.com/essays/Fire-2/83913.
"Fire 2." Essayworld.com. May 19, 2008. Accessed November 28, 2024. http://www.essayworld.com/essays/Fire-2/83913.
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