The Fire Triangle
There are three main ingredients that constitute a fire: heat, fuel, and oxygen. The image to the right referred to as the "fire triangle," shows how these three components interact to create a fire.
Fuel is any combustible material that can be used as the source of ignition of the fire, as well as to keep it burning.
Oxygen is an oxidizing agent that reacts with the fuel to start and continue the fire. Lower concentrations of oxygen result in slower fuel combustion.
Heat: Fires require oxygen and fuel reacting with each other at a temperature exceeding a threshold temperature, referred to as the "flashpoint." Different materials and chemicals have different flashpoints, some at low temperatures and some high. The lower the flash point temperature of a compound, the more easily the compound ignites.
Knowledge Check Choose the best answer for the question.
1-1. What are the three main ingredients in the "fire triangle?"
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