AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/scout-fire-triangle

The fire triangle says a fire needs which three things?

Heat, fuel and oxygen.

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  1. Wood, matches and wind
  2. Heat, fuel and oxygen ✔
  3. Heat, smoke and ash

Why: A fire burns only when it has heat, fuel and oxygen. Remove any one side of the triangle and combustion stops. Water cools a fire, while smothering it blocks oxygen.

Huh, didn't know that: The Park Service fire triangle lesson comes from the Forest Service Fire Lab curriculum.

The dad joke
Why did the campfire break up with the wood? It needed space, and oxygen.
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References

Answer: Heat, fuel and oxygen. A fire burns only when it has heat, fuel and oxygen. Remove any one side of the triangle and combustion stops. Water cools a fire, while smothering it blocks oxygen.

  1. National Park Service lesson plan: Meeting the Fire Triangle www.nps.gov/teachers/classrooms/meeting-the-fire-triangle.htm
    Fire can occur only if oxygen, fuel, and heat are available.
    Checked 2026-10-08.

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