The fire triangle: how fire starts and dies

📖 Lesson ──▶ 🎯 Quiz — pick the translation ──▶ ✅ Lesson done

Fire is chemistry, not magic. Three legs needed: FUEL (wood, petrol, gas), OXYGEN (air ~21%), HEAT (match, spark, hot wire). Remove any leg — fire dies. Every extinguishing method removes a leg: water steals heat, foam/blanket cuts oxygen, CO₂ displaces air, removing fuel (shut the gas) starves it. Understand the triangle — you understand 90% of firefighting.

●Smoldering blanket 20 minutes = silent killer: cigarettes and candles top the causes
●Opening the door to a fire = oxygen → flashover. Check through the gap!
●Fat fire? Never water! Lid on → it suffocates

🔺 Flashover is the point of no return: at ~600 °C the whole room ignites within seconds. You have 3–5 minutes — your evacuation budget, not a window for belongings.

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Test yourself!

Practice the topic with the trainer — like after class

Quiz — pick the translation → 🖨 Worksheet