Chapter 5 - Fire Dynamics (Test/Quiz)

The primary oxidizing agent in most fires is:

oxygen

What are the four stages of compartment fire development, in order?

Incipient, growth, fully developed, decay

The term "fully developed" means a fire:

has grown as much as it can.

Products of combustion are often simply described as:

heat and smoke.

What happens to gases with a vapor density of less than 1?

They will rise in air.

In a structure fire, the method by which the fire receives the needed oxygen to sustain the combustion reaction occurs through:

flow paths.

Most building codes rate the various construction types according to how long each construction type:

maintains its structural integrity under fire conditions.

A physical reaction that absorbs energy as it occurs is:

endothermic.

All fires involve a heat-producing chemical reaction between some type of fuel and a(an):

oxidizer.

The fuel in a combustion reaction is:

the reducing agent.

In terms of fire behavior, power is the _____ rate during combustion

heat release

How can firefighters control the fire flow path in a structure fire?

Using doors and ventilation techniques to control the amount of air available to the fire

Pyrolysis is off-gassing in:

solids

The appearance of isolated flames in a compartment fire is sometimes an immediate indicator of:

flashover.

When sufficient oxygen is available for flaming combustion in a compartment, the fire is said to be:

fuel-limited.

Which method of heat transfer is a common cause of exposure fires?

Radiation

Which method of heat transfer occurs when heat is transferred through and between solids?

Convection

What can cause a backdraft to occur?

An increase in ventilation in a ventilation-limited compartment fire.

The most common source of heat in combustion reactions is ____ energy.

chemical

When a structure is under construction, being renovated, or awaiting demolition:

the risk of fire rises sharply.