Which term describes the path of travel of a fire from the origin?

• A. Area of origin
• B. Vent pattern
• C. Fire pattern
• D. Fire load

Answer: (C)

The path of travel of a fire from the origin is described by fire pattern. This term refers to the visible indicators left by the fire as it moved through a space—burn and soot marks, charring on surfaces, smoke staining, and the direction flames and hot gases traveled. By reading these patterns, investigators infer how the fire progressed, which areas it reached first, and how factors like ventilation influenced its spread.

Area of origin pinpoints where the fire started, not its route. Vent pattern concerns openings and airflow effects, not the actual travel path. Fire load is the amount of combustible material available, which affects intensity but not the path the fire follows.