Foam extinguishes a fire by __________.

Foam extinguishes a fire by __________.

Question 1 of 270705eccef9ebacbc34ba4d4626e

Foam extinguishes a fire by __________.

Question 1 of 27070

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Q

Foam extinguishes a fire by __________.

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🔍 Key Concepts

• How foam works as a fire extinguishing agent • Difference between cooling, smothering, and chemical reaction methods of extinguishing fires • What happens when foam covers the surface of a burning liquid

💭 Think About

• Ask yourself: When you apply foam to a burning liquid, what changes first – the fuel itself, the heat, or the oxygen supply? • Think about the physical effect of a foam blanket sitting on top of a pool of burning oil or fuel. What does that blanket prevent? • Which option best describes a physical blocking action rather than a chemical change of the fuel?

✅ Before You Answer

• Identify which choices describe a chemical change versus a physical barrier • Recall that foam usually forms a blanket over flammable liquids – what is that blanket’s main job? • Eliminate any option that suggests the foam destroys or absorbs the fuel itself, rather than covering or isolating it