Firefighter Fire Behavior and Suppression 2

Question 1

What term describes the rapid spread of fire across the unburned gases collected at the ceiling of a compartment?

Accepted Answer

Rollover

Answer

Backdraft

Answer

Flashover

Answer

Conduction

Question 2

Which class of fire involves energized electrical equipment?

Accepted Answer

Class C

Answer

Class A

Answer

Class B

Answer

Class D

Question 3

What is the primary extinguishing mechanism of water on a Class A fire?

Accepted Answer

Cooling and heat absorption

Answer

Smothering oxygen

Answer

Chemical chain interruption

Answer

Saponification

Question 4

A firefighter notices smoke puffing in and out of a closed door with no visible flame. This sign most likely indicates risk of:

Accepted Answer

Backdraft

Answer

Flashover

Answer

Rollover

Answer

Pyrolysis

Question 5

Which method of heat transfer moves heat through direct physical contact between materials?

Accepted Answer

Conduction

Answer

Convection

Answer

Radiation

Answer

Combustion

Question 6

What does the acronym in the fire tetrahedron add beyond the classic fire triangle?

Accepted Answer

Chemical chain reaction

Answer

Smoke

Answer

Pressure

Answer

Pyrolysis

Question 7

Which extinguishing agent works best on a Class D combustible metal fire?

Accepted Answer

Dry powder agent

Answer

Water

Answer

CO2

Answer

Foam