Sunday, August 10, 2014

How Forest Fires Happen --Sara

   According to the science behind , How It Happens Forest Fires ,by Aaron Byrd, David Frank and Henry Fountain, forest fires happen because of the source of heat such as : lighting strikes and maybe simple things like the discarded cigarettes.first.if somebody throw the cigarette that will cause a fire because it is produced heat.then the heat interacts with grasses and leafs .after that it will produced gas.actually the gas and the oxygen in the air will combines together to burn. that process will causes more heat and more gases .after a while whole trees  will burn and the fire spread to a large area  .the steep terrain helps to speed the fire on the trees that mean the fire will become larger and larger .for that the dangerous will increase  .the science behind reports that forest fires are dangerous because it causes many loses in money and lives.the forest fire has many effects to the people and the environment .

many people are displaced from their homes because the fire will arrived to them houses and it is going to burn it .also he fire causes a heavy air pollution that will help to increase the disease . the video mention that the fire fighters have ways to stop the fires sometimes they make a limit from the fuel to cut the path of the fires and deprive it from spread,.also, they take water in a large balloon and they sprinkle it to the fire area  by the plane to reduce the heat that will prevent fire from prevalence .another way that the fire fighters use to controls the fires is fire retardant which is a substance that reduces flammability of fuels or delays their combustion that use it by plane too.the fire fighter drop it above the fires area  .

link: http://www.nytimes.com/video/science/100000002861324/the-science-behind-forest-fires.html

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