Emergency Services Fire Safety and Firefighting

Question 1

What are the three elements of the 'Fire Triangle'?

Accepted Answer

Heat, fuel, oxygen

Answer

The fire triangle consists of heat, fuel, and oxygen — removing any one element extinguishes the fire.

Question 2

What type of fire extinguisher should be used on a Class K (cooking oil) fire?

Accepted Answer

Wet chemical extinguisher

Answer

Class K fires involve cooking oils and greases and require wet chemical extinguishers, which saponify the burning fat.

Question 3

What does PASS stand for when using a fire extinguisher?

Accepted Answer

Pull, Aim, Squeeze, Sweep

Answer

PASS stands for Pull the pin, Aim at the base, Squeeze the handle, and Sweep side to side.

Question 4

What is 'backdraft' in firefighting?

Accepted Answer

A sudden explosion when oxygen is reintroduced into a depleted fire environment

Answer

Backdraft occurs when a smoldering fire in an oxygen-depleted space receives a sudden influx of fresh air, causing a rapid explosive combustion.

Question 5

Which ICS (Incident Command System) principle ensures that each responder reports to only one supervisor?

Accepted Answer

Unity of command

Answer

Unity of command means every responder has one designated supervisor, reducing confusion and conflicting orders.

Emergency Services Practice Test