CFPS Fire Dynamics and Behavior 2

Question 1

What term describes the minimum temperature at which a liquid fuel produces enough vapor to ignite when an ignition source is present?

Accepted Answer

Flash point

Answer

Flash point is the minimum temperature at which a liquid produces sufficient vapor to momentarily ignite in the presence of an ignition source.

Question 2

During flashover, the approximate temperature in the upper gas layer typically reaches:

Accepted Answer

900–1200°F (482–649°C)

Answer

Flashover occurs when the upper gas layer reaches approximately 900–1200°F (482–649°C), causing all combustible surfaces in the compartment to simultaneously ignite.

Question 3

Which combustion product is the leading cause of fire fatalities in the United States?

Accepted Answer

Carbon monoxide

Answer

Carbon monoxide is the leading cause of fire-related fatalities because it is colorless, odorless, and rapidly incapacitates victims at relatively low concentrations.

Question 4

The flammable (explosive) range of a gas is bounded by the:

Accepted Answer

Lower Flammable Limit (LFL) and Upper Flammable Limit (UFL)

Answer

The flammable range is defined by the LFL (minimum fuel-air mixture that sustains combustion) and UFL (maximum mixture that sustains combustion).

Question 5

A fuel package that is burning at the maximum rate limited by available oxygen rather than fuel surface area is said to be:

Accepted Answer

Ventilation-controlled

Answer

A ventilation-controlled fire cannot increase its heat release rate because oxygen supply is the limiting factor, not the available fuel.

CFPS (Certfied Fire Protection Specialist) Practice Test

CFPS (Certfied Fire Protection Specialist) Practice Test

CFPS Fire Dynamics and Behavior 2