The Science of Fire What we will learn

What we will learn today • We will talk about how the heat, fuel

We have already learned that: • It takes three things to cause a fire

• What is the definition of fire? – Webster’s dictionary • the active

• Fire results from a chemical reaction between two or more materials –

• If you remove any one element, you prevent the chemical chain reaction

• Removing Fuel – Education messages • good housekeeping practices • storage of

• Removing Heat – Control of • • smoking materials matches and lighters

• Removing Oxygen – Stop, drop and roll – Smothering action

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The Science of Fire

What we will learn today • We will talk about how the heat, fuel and oxygen, working together, cause a chemical chain reaction.

We have already learned that: • It takes three things to cause a fire – Heat - something that is hot – Fuel - something that will burn – Oxygen - the air all around us • If we take any one of these things away, the fire cannot survive

• What is the definition of fire? – Webster’s dictionary • the active principal of burning, characterized by the heat and light of combustion – You or me • flames, heat and smoke – Fire Fighter • fast chemical reaction in which heat and light are produced and in which changes to oxygen take place.

• Fire results from a chemical reaction between two or more materials – changes the materials, which produces heat, flames and toxic smoke

Ai He at FIRE TRIANGLE r Fuel

• If you remove any one element, you prevent the chemical chain reaction that results from fire Oxygen - or the air all around us Fuel - or something that will burn

• Removing Fuel – Education messages • good housekeeping practices • storage of flammable liquids – in approved containers – away from heat sources

• Removing Heat – Control of • • smoking materials matches and lighters heating appliances candles – Suppression • water cools a fire

• Removing Oxygen – Stop, drop and roll – Smothering action