FCTC Fire Behavior and Service Terminology 2

Question 1

Which class of fire involves flammable liquids such as gasoline or paint thinner?

Accepted Answer

Class B

Answer

Class A

Answer

Class C

Answer

Class D

Question 2

'Flashover' during a building fire occurs when:

Accepted Answer

Radiant heat causes all combustible materials in a room to ignite simultaneously

Answer

A firefighter's protective gear is exposed directly to open flame

Answer

Water applied to a fire instantly converts to steam in the hot gases

Answer

Flames break through a roof creating a vertical column of fire

Question 3

The 'two-in, two-out' rule requires that:

Accepted Answer

Two firefighters enter a hazardous area together while two remain outside ready to assist

Answer

Two hose lines must be deployed before any firefighter enters a structure

Answer

Teams alternate entering and exiting every two minutes during interior operations

Answer

Two senior officers must authorize an interior attack before crews advance

Question 4

'Ventilation' in a firefighting context means:

Accepted Answer

Removing heat, smoke, and toxic gases from a structure to improve conditions for firefighters and victims

Answer

Supplying extra oxygen to a fire area to accelerate combustion and weaken the structure

Answer

Testing air quality inside a building before authorizing crew entry

Answer

Cooling a structure by flooding it with water after the fire is extinguished

Question 5

A 'back draft' is most likely to occur when:

Accepted Answer

Fresh oxygen enters a superheated, oxygen-depleted space, causing explosive ignition of accumulated gases

Answer

Strong winds force flames to reverse direction through an open doorway

Answer

Water is suddenly applied to a fire involving energized electrical equipment

Answer

An SCBA regulator reverses airflow during interior operations

Question 6

In fire behavior, heat transfer by 'conduction' occurs through:

Accepted Answer

Direct physical contact between materials

Answer

Moving currents of heated air or gases

Answer

Electromagnetic radiation traveling through space

Answer

Water carrying heat away from the fire source

Question 7

The three elements of the 'fire triangle' are:

Accepted Answer

Fuel, heat, and oxygen

Answer

Fuel, heat, and carbon dioxide

Answer

Oxygen, nitrogen, and heat

Answer

Water, fuel, and ignition source