Which three elements create the fire triangle?

Which three elements create the fire triangle?

• A. Water, Oxygen, Salt
• B. Fuel, Water, Heat
• C. Fuel, Heat, Oxygen
• D. Oxygen, Fuel, Carbon dioxide

Answer: (C)

Three things must be present for a fire to continue: fuel, heat, and oxygen. Fuel is the material that burns, providing the source of energy. Heat supplies the energy needed to reach and maintain the fuel’s ignition temperature so combustion can keep happening. Oxygen acts as the oxidizer that allows the chemical reactions of burning to proceed. If you remove any one of these—cool the flame below ignition temperature, cut off the fuel supply, or smother the flame to deprive it of oxygen—the fire cannot continue. Water and common salt aren’t part of the burning trio; water cools and can extinguish by removing heat, and salt isn’t a fuel. Carbon dioxide isn’t a sustaining component either; it’s a byproduct of combustion and, when present in sufficient concentration, can displace oxygen and help extinguish flames rather than feed them.

Three things must be present for a fire to continue: fuel, heat, and oxygen. Fuel is the material that burns, providing the source of energy. Heat supplies the energy needed to reach and maintain the fuel’s ignition temperature so combustion can keep happening. Oxygen acts as the oxidizer that allows the chemical reactions of burning to proceed. If you remove any one of these—cool the flame below ignition temperature, cut off the fuel supply, or smother the flame to deprive it of oxygen—the fire cannot continue.

Water and common salt aren’t part of the burning trio; water cools and can extinguish by removing heat, and salt isn’t a fuel. Carbon dioxide isn’t a sustaining component either; it’s a byproduct of combustion and, when present in sufficient concentration, can displace oxygen and help extinguish flames rather than feed them.