What aspect of fire development is a result of an increase in low-level ventilation prior to upper level ventilation?
A) Rollover
B) Backdraft
C) Combustion
D) Smoke explosion

Question

Quizplus · Accepted Answer

Backdraft occurs when oxygen is introduced to a fire in a confined space, such as through low-level ventilation, before upper level ventilation can occur. This sudden influx of oxygen can cause a rapid, explosive combustion of the heated gases and unburned fuel, resulting in a backdraft.

What Aspect of Fire Development Is a Result of an Increase