BASIC FIREFIGHTER 1ASSESSMENT FULLY DETAILED AND VERIFIED WITH ACCURATE SOLUTIONS

BASIC FIREFIGHTER 1ASSESSMENT
FULLY DETAILED AND VERIFIED WITH
ACCURATE SOLUTIONS



1. Solids

2. Liquids

3. Gases - answer ✔✔-Three (3) Physical State of Matter in which FUEL EXISTS.



1. Conduction

2. Convection

3. Radiation - answer ✔✔-Three (3) ways HEAT is transfered



CONDUCTION

Note: Not all materials conduct heat similarly. - answer ✔✔-Heat Transferred by an intervening Heat-
conducting medium or by the direct contact of two bodies



1. Heat

2. Smoke

3. Gases

4. Light (Flame) - answer ✔✔-Four (4) products of combustion



1. Incipient (or beginning) Phase

2. Steady-State Burning (or Free burning) Phase

3. Hot-Smoldering Phase - answer ✔✔-Three (3) MAIN progressive phases or stages of a Fire

,Liquids Assume the shape of their container. - answer ✔✔-Characteristics of liquid fuels which increases
Difficulty of Extinguishment



Convection

Note: Heat transferred by convection usually occurs in an upward direction. - answer ✔✔-Heat
transferred by the movement of air, other gases or liquids.

FORM OF HEAT TRANSFER



1. Fuel (Reducing Agent)

2. Oxygen (Oxidizing Agent)

3. Heat (Temperature)

4. Chemical Chain Reaction - answer ✔✔-The Four (4) elements of the Fire Tetrahedron



Smoldering Mode of Combustion - answer ✔✔-Mode of Combustion

Associated with the Fire Triangle



Rollover

Note: unlike a Flashover, in a Rollover only the gases are burning, not the contents of the room. - answer
✔✔-Occurs when unburned combustible gases which accumulate at the ceiling level are pushed into
uninvolved areas where they mix with oxygen and upon reaching their flammable range, ignite and
expand rapidly rolling over the ceiling.



1. Elimination of Fuel

2. Exclusion of Oxygen

3. Reduction of Temperature

4. Inhibition of the Chemical Chain Reaction - answer ✔✔-Four (4) methods used to extinguish fire.



Flaming Mode of Combustion - answer ✔✔-Mode of combustion associated with the fire tetrahedron

, Solid Fuels - Pyrolysis

Liquid Fuels - Vaporization - answer ✔✔-Terms for process by which gases evolve from solid fuels when
they are heated and for processes by which gases evolve from liquid fuels.



Vapor Density

The Vapor Density of Air is 1 - answer ✔✔-Density of gases in relation to air



Oxygen - answer ✔✔-Gas which supports combustion



Incipient Phase - answer ✔✔-Fire phase when portable fire extinguishers may be most effective



Flashover - answer ✔✔-Caused by an excessive buildup of heat, flames fully involve and entire area or
surface



The self-sustaining process of rapid oxidation of a fuel producing light and heat. - answer ✔✔-Definition
of Combustion



Class B

Note: Oxygen exclusion is the most effective way to control Class B fires. - answer ✔✔-Involves
flammable liquids, greases and gasses

CLASSIFICATION OF FIRE



There is 21% Oxygen in room air.

Oxygen concentrations below 15% will not support combustion.

Oxygen concentrations below 17% present a life safety hazard. - answer ✔✔-Percentage of Oxygen in
room air and percentage required for combustion and life safety



1. Fuel (Reducing agent)

2. Oxygen (Oxidizing agent)

3. Heat (Temperature) - answer ✔✔-The three (3) elements of the fire triangle