Tuesday, August 14, 2012

Wildfires

Wild fires, big huge destructive wildfires.

A wildfire is a uncontrolled fire that consists of combustable weeds and bushes often caused by extremely dry and hot weather. Wildfires can be found on every continent except on Antarctica. Wildfires are most common on the continent of Australia especially near Victoria AU in the summer.



The four most common forms of wildfire ignition are spontaneous combustion (due to a heat source), volcanic eruptions, lightning and sparks from rockfalls. In the USA alone there are between 60,000 and 80,000 wildfires each year but most are less then 1/4 of an acre.
There are several different types of wildfires: ground fires, crawling or surface fires, ladder fires and crown, canopy or arial fires. Ground fires are wildfires fed by subterranean organic matter. Crawling fires are fed by leaf and timber debris such as leaves and sticks. Ladder fires are fed by stuff such as small trees, vines and fallen trees. Crown fires burn at the canopy level of forests and tend to destroy lots of trees.



That will be all today on wildfires

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