IFSTA 7 Exam Prep - Chapter 14: Fire
Suppression
When firefighters apply water to the hot gas layer in a compartment, it will: (670) [4.3.10]
a. increase the potential for flashover.
b. increase the radiant heat flux from the upper layer.
c. reduce the radiant heat flux from the upper layer.
d. push fire into adjacent rooms. - Answer-c. reduce the radiant heat flux from the upper layer.
What can happen if excess steam is produced inside the structure as a result of applying water on the
fire? (670) [4.3.10]
a. Disruption of the thermal layering
b. Increase in the potential for backdraft or flashover
c. Transition from fuel-limited to ventilation-limited conditions
d. Pyrolysis process speeds up - Answer-a. Disruption of the thermal layering
In which situation would fuel removal be a likely method of extinguishment? (670) [4.3.19]
a. Fire in an apartment building
b. Fire in a one-story house
c. Grass fire
,d. Warehouse fire - Answer-c. Grass fire
Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be an example of:
(670) [4.310]
a. fuel removal.
b. oxygen exclusion.
c. chemical flame inhibition.
d. temperature reduction. - Answer-a. fuel removal.
When a firefighter controls doors and windows during fire attack, it is an example of: (671) [4.310,
4.3.11]
a. chemical flame inhibition.
b. temperature reduction.
c. fuel removal.
d. oxygen exclusion. - Answer-d. oxygen exclusion.
Clean agents extinguish fire by: (672) [4.3.10]
a. removing oxygen from the compartment.
b. removing the burning fuel.
c. cooling the burning material.
d. Interrupting the combustion reaction. - Answer-d. Interrupting the combustion reaction.
If you are positioned to make fire attack, which condition would be important to communicate to your
supervisor or the Incident Commander? (673) [4.3.10]
a. Smoke that changes from gray to black
b. All team members' PASS devices are functioning
c. Amount of radiant heat felt by firefighters
, d. Presence of bystanders at the perimeter - Answer-a. Smoke that changes from gray to black
Firefighters should ensure that PASS devices are on and operating properly: (674) [4.3.10]
a. before entering the structure.
b. once they reach the seat of the fire.
c. before applying water to the fire.
d. once they reach their "point of no return." - Answer-a. before entering the structure.
Which tool or piece of equipment is a member of a fire attack team likely to carry? (674) [4.3.10]
a. Salvage cover
b. PPV fan
c. Power saw
d. Hand light - Answer-d. Hand light
Before entering the building or fire area, the firefighter who is assigned to the nozzle of the attack hose
should: (674) [4.3.8, 4.3.10]
a. open the nozzle fully to check for adequate flow.
b. wait to call for water until the entry door is propped open.
c. open the nozzle fully once he or she reaches the fire compartment.
d. wait to call for water until they are several steps inside the structure. - Answer-a. open the nozzle fully
to check for adequate flow.
What should the attack team do if they open the door to a structure and observe a low neutral plane
and turbulent smoke? (676) [4.3.10]
a. Apply water to the hot gas layer, but stay outside the structure
b. Apply water to the hot gas layer while advancing to the seat of the fire
c. Close the door and use a different entrance to the structure
Suppression
When firefighters apply water to the hot gas layer in a compartment, it will: (670) [4.3.10]
a. increase the potential for flashover.
b. increase the radiant heat flux from the upper layer.
c. reduce the radiant heat flux from the upper layer.
d. push fire into adjacent rooms. - Answer-c. reduce the radiant heat flux from the upper layer.
What can happen if excess steam is produced inside the structure as a result of applying water on the
fire? (670) [4.3.10]
a. Disruption of the thermal layering
b. Increase in the potential for backdraft or flashover
c. Transition from fuel-limited to ventilation-limited conditions
d. Pyrolysis process speeds up - Answer-a. Disruption of the thermal layering
In which situation would fuel removal be a likely method of extinguishment? (670) [4.3.19]
a. Fire in an apartment building
b. Fire in a one-story house
c. Grass fire
,d. Warehouse fire - Answer-c. Grass fire
Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be an example of:
(670) [4.310]
a. fuel removal.
b. oxygen exclusion.
c. chemical flame inhibition.
d. temperature reduction. - Answer-a. fuel removal.
When a firefighter controls doors and windows during fire attack, it is an example of: (671) [4.310,
4.3.11]
a. chemical flame inhibition.
b. temperature reduction.
c. fuel removal.
d. oxygen exclusion. - Answer-d. oxygen exclusion.
Clean agents extinguish fire by: (672) [4.3.10]
a. removing oxygen from the compartment.
b. removing the burning fuel.
c. cooling the burning material.
d. Interrupting the combustion reaction. - Answer-d. Interrupting the combustion reaction.
If you are positioned to make fire attack, which condition would be important to communicate to your
supervisor or the Incident Commander? (673) [4.3.10]
a. Smoke that changes from gray to black
b. All team members' PASS devices are functioning
c. Amount of radiant heat felt by firefighters
, d. Presence of bystanders at the perimeter - Answer-a. Smoke that changes from gray to black
Firefighters should ensure that PASS devices are on and operating properly: (674) [4.3.10]
a. before entering the structure.
b. once they reach the seat of the fire.
c. before applying water to the fire.
d. once they reach their "point of no return." - Answer-a. before entering the structure.
Which tool or piece of equipment is a member of a fire attack team likely to carry? (674) [4.3.10]
a. Salvage cover
b. PPV fan
c. Power saw
d. Hand light - Answer-d. Hand light
Before entering the building or fire area, the firefighter who is assigned to the nozzle of the attack hose
should: (674) [4.3.8, 4.3.10]
a. open the nozzle fully to check for adequate flow.
b. wait to call for water until the entry door is propped open.
c. open the nozzle fully once he or she reaches the fire compartment.
d. wait to call for water until they are several steps inside the structure. - Answer-a. open the nozzle fully
to check for adequate flow.
What should the attack team do if they open the door to a structure and observe a low neutral plane
and turbulent smoke? (676) [4.3.10]
a. Apply water to the hot gas layer, but stay outside the structure
b. Apply water to the hot gas layer while advancing to the seat of the fire
c. Close the door and use a different entrance to the structure
