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Fire Fighting QUESTION #5634
Question 1
What makes a fire 'self-sustaining' according to fire science?
  • The presence of wind
  • The chemical chain reaction continuously releasing energy to perpetuate combustion✔️
  • An unlimited fuel supply
  • High ambient temperatures
Correct Answer Explanation
A fire becomes self-sustaining through the chemical chain reaction — the combustion process itself releases enough energy to continue breaking down fuel molecules and sustaining the reaction.