Fire
rapid oxidation of a material; phenomenon that emits light and heat / From Wikipedia, the free encyclopedia
Fire is a chemical reaction that gives off light and heat. Fire happens when a material rapidly oxidizes, or loses electrons, and releases a great amount of energy. Flames are only the portion of the fire that gives off visible light.
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Fire is sometimes useful, but also very dangerous because it can cause houses, trees and other things to burn to ashes. Forest fires are very harmful. They can destroy a huge area in a matter of minutes. Every year people die by accident from fire.
Fire can be started by heating a material in many different ways. Once the material is heated past a temperature called the ignition point, it will start to burn, beginning a fire. Some common ways to start a fire include rubbing sticks together very rapidly, making sparks by hitting flint with steel, or using matches or a lighter. The Sun does not make fire. Instead, it crushes together hydrogen atoms to release energy through a process called nuclear fusion.