IFSTA 7 EXAM PREP - CHAPTER 14:
FIRE SUPPRESSION WITH COMPLETE
SOLUTIONS
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
Patches of unburned fuel inside the perimeter of a ground cover fire are called: (713)
[4.3.19]
a. flanks.
b. fingers.
c. islands.
d. greens. - ANSWER-c. islands.
Which action would be done when creating a fire line? (714) [4.3.19]
a. Scatter all unburned material into the black.
b. Stop applying water to the fire until the line is complete.
c. Throw all burned material into the black.
d. Clear only the top layer of burned fuels from the ground. - ANSWER-c. Throw all
burned material into the black.
Which is a component of the LCES technique for situational awareness at ground cover
fires? (714) [4.3.19]
a. Lightning
b. Exposures
c. SCBA
d. Communications - ANSWER-d. Communications
, During ground cover fire fighting operations, if an oil well or a pipeline is broken and
exposed to fire, firefighters should: (717) [4.3.19]
a. treat the situation like a hazardous materials incident and withdraw.
b. treat the situation like any other ground cover fire incident.
c. apply water from a distance using a master stream device.
d. apply Class A or B foam to any burning fuels. - ANSWER-a. treat the situation like a
hazardous materials incident and withdraw.
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
d. Perform negative pressure ventilation to remove smoke from the compartment -
ANSWER-a. Apply water to the hot gas layer, but stay outside the structure
Why is it dangerous to work below the hot gas layer without attempting to cool it? (677)
[4.3.10]
a. The hot gas layer can break open windows, creating ventilation issues.
b. The hotter the gas layer is, the more toxic the fumes are.
c. The smoke contains fuel, and it may ignite at any time.
d. The hot gas layer will continue to raise and cause damage to the ceiling and floors
above. - ANSWER-c. The smoke contains fuel, and it may ignite at any time.
If a firefighter aims a solid stream at an item that is on fire and applies water until the
item is no longer burning, he or she is using a(an): (677) [4.3.8, 4.3.10]
a. direct attack.
b. indirect attack.
c. combination attack.
d. transitional attack. - ANSWER-a. direct attack.
If a firefighter aims a solid or straight stream at the ceiling so that water will rain down
and extinguish the burning item, he or she is using a(an): (678) [4.3.10]
a. direct attack.
b. indirect attack.
c. combination attack.
d. transitional attack. - ANSWER-b. indirect attack.
FIRE SUPPRESSION WITH COMPLETE
SOLUTIONS
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
Patches of unburned fuel inside the perimeter of a ground cover fire are called: (713)
[4.3.19]
a. flanks.
b. fingers.
c. islands.
d. greens. - ANSWER-c. islands.
Which action would be done when creating a fire line? (714) [4.3.19]
a. Scatter all unburned material into the black.
b. Stop applying water to the fire until the line is complete.
c. Throw all burned material into the black.
d. Clear only the top layer of burned fuels from the ground. - ANSWER-c. Throw all
burned material into the black.
Which is a component of the LCES technique for situational awareness at ground cover
fires? (714) [4.3.19]
a. Lightning
b. Exposures
c. SCBA
d. Communications - ANSWER-d. Communications
, During ground cover fire fighting operations, if an oil well or a pipeline is broken and
exposed to fire, firefighters should: (717) [4.3.19]
a. treat the situation like a hazardous materials incident and withdraw.
b. treat the situation like any other ground cover fire incident.
c. apply water from a distance using a master stream device.
d. apply Class A or B foam to any burning fuels. - ANSWER-a. treat the situation like a
hazardous materials incident and withdraw.
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
d. Perform negative pressure ventilation to remove smoke from the compartment -
ANSWER-a. Apply water to the hot gas layer, but stay outside the structure
Why is it dangerous to work below the hot gas layer without attempting to cool it? (677)
[4.3.10]
a. The hot gas layer can break open windows, creating ventilation issues.
b. The hotter the gas layer is, the more toxic the fumes are.
c. The smoke contains fuel, and it may ignite at any time.
d. The hot gas layer will continue to raise and cause damage to the ceiling and floors
above. - ANSWER-c. The smoke contains fuel, and it may ignite at any time.
If a firefighter aims a solid stream at an item that is on fire and applies water until the
item is no longer burning, he or she is using a(an): (677) [4.3.8, 4.3.10]
a. direct attack.
b. indirect attack.
c. combination attack.
d. transitional attack. - ANSWER-a. direct attack.
If a firefighter aims a solid or straight stream at the ceiling so that water will rain down
and extinguish the burning item, he or she is using a(an): (678) [4.3.10]
a. direct attack.
b. indirect attack.
c. combination attack.
d. transitional attack. - ANSWER-b. indirect attack.
