Firefighter 2 100 Questions

A dry-barrel hydrant only has water in it when
The stem nut is operated to open the control valve
A water main has broken
The temperature outside is above freezing
A clapper valve has been openeded
When attacking a vehicle fire, crews should:
Extinguish a fire in the trunk comparment first
Approach at a 45-deree angle from the side of the vehicle
Approach from downhill and downwind of the fire
Attempt to use a fire extinguisher before using a hoseline
 
Directing short bursts of water into the hos gas layer:
Will cool the gas layer and reduce chances of the gases
Is hazardous and should not be done
Is a way to directly attack fire
Will create large amounts of steam that can burn firefighters in the area
When attacking fire in a small unattached structure such as a storage shed,:
Class A foam will not be effective
Class A foam must be used instead of water
An interior attack should be used
An exterior attack should be used
What factor has the biggest impact on a ground cover fire?
Weather
Topography
Type of fuel
Time Of Day
Which type of alternative vehicle fuel has a flame that is invisible during the day and should be allowed to burn itself out?
Hydrogen
Compressed natural gas
Biodisel
Liquified Natural Gas
Which method of fire suppression is rarely an option at a structure fire?
Chemical flame inhibition
Oxygen exclusion
Temperature Reduction
Fuel Removal
When a firefighter controls doors and windows during fire attack, it is an example of:
Chemcial Flame Inhibition
Temperature reduction
Fuel Removal
Oxygen Exclusion
What is the primary goal when attacking fire in exterior stacked or piled Class A materials?
Prevent property damage by using as little water as possible
Prevent monetary loss by salvaging as much of the matieral as possible
Contain the fire and protect exposures
Allow the fire to burrn itself out
Applying water to a fire is an example of:
Oxygen exclusion
Fuel removal
Chemical Flame Inhibition
Temperature Reduction
Which method of fire attack involved applying water onto burning fuels using a solid or straight stream?
Transitional Attack
Direct Attack
Combination Attack
Indirect Attack
What can happen if excess steam is produced inside the structure as a result of applying water on the fire?
Transition from fuel-limited to ventilation-limited condtions
Increase in the potential for backdraft or flashover
Pyrolysis process speeds up
Disruption of the thermal layering
Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be an example of:
Fuel removal
Chemical Flame Inbhition
Temperature Reduction
Oxygen Exclusion
What part of a ground cover fire spreads the most rapidly and usually does the most damage?
Origin
Head
Flank
Finger
In which situation would fuel removal be a likely method of extinguishment?
Warehouse Fire
Fire in an apartment building
Fire in a one-story house
Grass fire
When firefighters apply water to the hot gas layer in a compartment, it will:
Reduce the radiant heat flux from the upper layer
Increase the radiant heat flux from the upper layer
Push fire into adjacent rooms
Increase the potential for flashover
Extinguisher agents such as _____ interrupt or inhibit the combustion reaction and stop chemical flame production.
Class A foam
Carbon dioxide (CO2)
Clean Agents
Water
Which statement describes transitional attack?
It is a suppression method that is only suitable to use with small unattached structures
Water is applied from the exterior first to transition the fire from ventilation-limited to fuel-limited
It is a supression method that is only suitable to use with fuel-limited fires
It is a suppression method that is only suitable to use with fuel-limited fires
At a structure fire, a Fire Fighter I:
Cannot be involved with electrical or gas utilities at all
Should know how to turn utilities back on once it is safe to do so
Must know the location of the utility control valves and switches
Will determine when to shut down building utilities
Which method of protecting building contents keeps items secure and reduces interference with fire suppression and ventilation activities?
Group and cover items in the room where they are found
Move items to an uninvovled area of the structure
Use a small hoseline to spray the area around the items
Carry items outside the building and cover them
Which is a duty of a Fire Fighter I?
Protecting the incident scene and preserving evidence
Determining which fire evidence will be admissible in court
Investigating invidivduals who may have started the fire
Identifying the exact cause of the fire
Where does overhaul typically begin?
On the top floor of the building
Area of most severe fire involvment
At the front entrance of the building
Area of least severe fire involvement
Which is an indicator that a fire was NOT accidental?
A broken gas line
Trailers
Structural Collapse
Presence of hazardous materials
Spalled concrete is an indicator of:
Arson
The need for additional engine companies
An accidental fire
Possible loss of structural integrity
Which piece of salvage equipment is designed to carry debris and provide a water basin for immersing small burning objects?
Carryall
Scupper
Salvage cover
Catchall
Which hazard are firefighters likely to encounter during overhaul?
Flashover
Severe burns
Toxic Gases
Spalling
Traditionally, how large is the collapse zone?
1½ times the height of the structure
1½ times the width of the structure
2½ times the height of the structure
2½ times the width of the structure
Why can abandoned buildings pose great danger of fire and collapse?
The interior may be compartmentalized
The exterior may be made of lightweight components
The interior may be gutted and altered
The exterior may be covered with flammable materials
How does heat affect mansonry?
Stones and conrete may experience spalling when they are heated
Bricks will crumble after minimal exposure to heat and flame
Stones and concrete will crumble after exposure to direct flame
Bricks may experience spalling when they are heated
Little or no water runoff from the interior of the structure can be an indicator that:
Fire suppression was effective
The structure is stable, because the fire has been put out
The structure is retaining water and at risk of collapse
Fire suppression was not effective
Which factor is likely to affect the speed with which a steel structural member fails under fire conditions?
Age
Exposure to foam extinguishing agents
Size
Where the steel is located in the structure
What is a concern about lath and plaster during a fire?
Shows signs of spalling when exposed to fire
Conceals hidden firers and adds fuel to the fire
Stretched when heated
Releases toxic gases when heated
Which building material can potentially be harmful to firefighters because it contains a glue called urea formaldehyde that gives off a hazardous gas when it is heated?
Mineral wood
Particle Board
Cellulose
Plywood
Cast iron may crack or shatter when it is:
Used as a decorative structural element
In contact with direct flames
Rapidly cooled with water
Heated indirectly
Which type of building material is used to protect other materials because its moisture content gives it excellent heat resistance?
Lath and plaster
Gypsum wallboard
Reinforced concrete
Reinforced steel
When heated, steel structural members tend to:
Elongate and push walls outward
Contract and cause walls to fall inward
Spall
Crumble
Which type of collapse is common for a Type V construction building?
Balloon collapse
Collapse of a single compartment
Walls collapsing in one piece or crumbling
Walls collapsing inward
When should a collapse zone be established at a structure fire?
As soon as interior operations begin
Once a defensive strategy is adopted
Before cordoning off the hot, warm, and cold zones
After mutual aid is requested
How does reinforced concrete react to exposure to fire?
It contracts and forces building walls inwards
It performs well, but can lose strength through spalling
It elongates and pushers building walls outward
It takes longer to fail after exposure to fire
When should firefighters begin considering the potential that a building will collapse?
During preincident surverys and size up
Immediately uponn arrival at the incident
Once the fire reaches the growth stage
Once the fire reaches fully involved stage
Which statement describes how glass will react under fire conditions?
Heated glass may crack when water is applied
Glass generally is not affected by fire condtions, but may be broken during forcible entry
It will break or melt, causing the surrounding walls to weaken
Glass can add a significant amount of fuel to the fire
Which type of building material can produce toxic gases and rapidly deteriorate under fire conditions?
Oriented Strand Board (OSB)
Glass
Lath and plaster
Steel
What must a Fire Fighter II be able to do to assist at technical rescue incidents?
Serve as a rapid entry team member
Recongnize hazards associated with the type of incident
Plan and evaluate operations associated with incident
Determine type of PPE and equipment needed
The controlled opening near the Command Post is monitored by
The Accountability Officer
The Safety Officer
A firefighter not involved in operations
Law enforcement
When responding to an elevator entrapment rescue,:
Immediately push the recall button
Follow the predetermined steps that are the same for all elevator rescuses
Occupants should not wait in the elevator
There are no consistent, sequential steps to follow
Which type of collapse has a good chance of habitable voids but is most vulnerable to secondary collapse?
Cantilever
Pancake
A-Frame
V-Shaped
Before entering into the hot zone, personnel must:
Wait until incident is stabilized
Remove any contaminated PPE
Sign in to the personnel accountability system
Go through rehab
Which type of water or ice rescue is extremely dangerous because of powerful undercurrents and a hydraulic action that make escape virtually impossible?
Water treatment facilities
Ponds or lakes
Low-head or low-water dams
Coastal Shorelines
Which type of rescue has limited means of entry and exit, is not designed for continuous occupancy, and may include cisterns/wells and utility vaults?
Structural collapse rescue
Confined-space rescue
Rope rescue
Trench rescue
Which is a task the Fire Fighter II must know in order to assist in technical rescue incidents?
Where tools and equipment are located on the apparatus
Provide direction on rescue tasks
Determine what tools and equipment are needed
How to stabilize rescue incidents
Stabilizing a rescue incident may involve:
Determining the type of rescue and units dispatched
Receiving the initial dispatch call
Diverting or blocking traffic
Determining the incident location
For which type of rescue would the Fire Fighter II monitor communication channels and search lines, operate SAR systems, and assist victims once they have been removed from the hot zone?
Vehicle rescue
Cave, Mine, and tunnel rescue
Rope Rescue
Water and Ice rescue
Which type of collapse occurs when the floor and/or roof assemblies on both sides of a load-bearing center wall collapse?
V-Shaped
Cantilever
A-Frame
Lean-to
The first priority in a structural collapse rescue is to:
Help untrapped victims to a safe area
Call for mutual aid assistance
Extricate victims who are trapped by collapse debris
Initiate press conferences with media
An advantage of__________ is that they are widely available on most fire apparatus.
Foam nozzles
Fog nozzles
Apparatus-mounted proportioners
Compressed air foam systems (CAFS)
Which type of foam proportioner is directly attached to the pump panel outlet or connected at some point in the hose lay?
Compressed air foam system (CAFS)
Foam nozzle eductor
In-line eductor
Apparatus-mounted proportioner
A(an) is mounted on an apparatus and uses a centrifugal pump to supply the water for the foam solution and an onboard air compressor to add air to the mixture before discharge.
Balanced-pressure proportioner
In-line eductor
Compressed air foam system (CAFS)
Around-the-pump proportioner
Fog nozzles can be used with foam solution to produce:
High-expansion, short-lasting foam
High-expansion, long-lasting foam
Low-expansion, short-lasting foam
Low-expansion, lonnng-lasting foam
What is a disadvantage of using fog nozzles to apply fire fighting foam?
They provide a limited reach compared to other nozzles
They are specialty nozzles that are not widely available on most aparratus
They are not as versatile as foam nozzles
Operator error is more likely to produce lower quality foam
Which is a characteristic of foam nozzles?
Longer stream reach than fog nozzles
Lower quality foam than fog nozzles
Shorter stream reaech than fog nozzles
More versatile overall than fog nozzles
Which type of foam proportioner can compromise firefighter safety by slowing firefighters down since it requires the concentrate to be available where the nozzle is being operated?
Apparatus-mounted proportioner
In-line eductor
Compressed air foam system (CAFS)
Foam nozzle eductor
Most fire fighting foams are intended to be mixed with:
94 to 99.9 percent water
50 to 75.9 percent water
80 to 90 percent water
30 to 60 percent water
Which hazard is associated with fire fighting foam concentrate?
Frostbite if foam contacts unprotected skin
Nausea and fever if foam contacts the skin
Degradation of PPE if left on the garments for a long period of time
Widespread negative enviromental effects
The premixing method of foam proportioning is typically used with:
Vehicle-mounted tank systems
A fixed fire protection system in a structure
In-line eductors
Fog nozzles attached to a large hoseline
Mixing water with foam concentrate to form a foam solution is referred to as:
Proportioning
Saponifying
Surfacting
Aerating
Class A foam acts as a surfactant, which means that it:
Requires a special type of aeration tool to be formed
Requires a special type of nozzle for application
Lowers the surface tension of water, allowing better penetration into the fuel
Raises the surface tension of water, creating a more effective extinguishing agent
High-quality foam bubbles are created through the process of:
Sepration
Aeration
Expansion
Saponificationn
The rate of application for Class B foam depends on:
The location of the fuel spill
The type of water used to proportion the foam
Whether or not the fuel is a surfactant
Whether the fuel is spilled or contained in a tank
Which factor is important when selecting the appropriate foam proportioner to use?
Stage of fire development
Terrain in the fire area
Weather conditions
Available water pressure
Which extinguishment method involves foam creating a barrier between the fuel gases and any possible ignition sources?
Separating
Smothering
Cooling
Penetrating
Which is true of polar solvent fuels?
Fires involving polar solvents can be extinguished using Class A foams designed for ordinary combustible fires
They are flamambles liquids that mix readily with water
Gasoline is the most common example of a polar solvent
Fires involving polar solvents can be extinguished using Class B foams designed hydrocarbon fires
The firefighter in command of the incident must understand alarm assignment, which means that they must know the:
Number and type of units that respond to each alarm
Sounds of alarm tones of different apparatus
Name of officer charge of each responding fire company
Cost of dispatching mutual aid resources
Which is a characteristic of NIMS-ICS?
Requirres a special certifcation to use its components
Only required to be used large incidents
Uses common terminology and communications
Incident action plans must be writing
A crew leader is responsible for:
Determining whether an offensive or defensive strategy will be used
Selecting the tools the crew needs to perform their duties
Being the first member of the crew to enter the IDLH atmosphere
Making aoperational assignments to incoming units
When the first firefighter arrives on scene, he or she should:
Stay at the perimeter of the scene until a company officer arrives
Act as the Incident Commander and establish command
Go immediately to hot zone and act as Safety Officer
Act as the Incident Commander and also work as a member of the suppression team.
Which piece of information must be communicated to crew members and dispatch when establishing command?
Number of firefighters on scene
Number of occupants in the building
Who the acting Incident Comamnder is
Who the Acting Safety Officer is
When a firefighter acting as the Incident Commander needs to transfer Command to someone,:
The firefighter must remain in the area to assist the new Incident Commander
It is preferable that Command is transferred via radio contact
A written report must be completed first
Face-to-face trannsfer of Command is preferred
When making operational assignments, the Incident Commander:
Must wait to assign personnel until all units have arrived
Will act as the leader of the attack crew while managing the rest of the incident
Should only assign a crew to fire attack if enough personnel are prsent
Can only assign RIC if the safety officer determines it is necessary
What must the acting Incident Commander know in order to forecast fire growth and development?
Number of building occupants
Availability of water sources
Building construction type
Outside air temperature
When making initial assignments, the acting Incident Commander:
Should never split a crew in orderr to assign personnel to assist command
Should continue to work as Incident Commander, but operate as a member of the supression or rescue crew
May place the company into action with a crew member serving as an acting company officer
Must only put interior crews into action if there are at least eight peronnsel on scene
Which type of fuel source would require the greatest amount of heat to ignite because it must undergo pyrolysis in order to burn?
Gasoline
Hydrogen
Diesel Fuel
Wood
When establishing a perimeter around a fire scene, the perimeter must be:
Continuously staffed by law enforcement officer
As small as possible, with room to expand if necessary
Marked using permanent barriers
Visible and recognizable
How large should the perimeter outside a structure fire be?
Large enough to surround the building and any adjacent exposure
Large enough to surround the buiilding and all potiential evidence outside the building
A minimum of 100 (30m) in every direction from the building
A minimum of 250 feet (75m) every direction from the building
When trying to locate the area of origin of a ground cover fire, you must know:
The precise time the fire started
How wind and topography can affect fire spread
Construction types for buildings in affected area
The fire cause before determining the area of origin
When examining the interior of a structure for the area of origin,:
Work from the area ofd least damage to the area of greatest damaged
Charring on the floor is the strongest indicator of area of origin
Items with charring on all sides indicate that the fire was set intentionally
Work from the area of greatest damage to the area of least damage
The area of origin will usually contain:
Evidence of arson
An obvious ignition source and material first ignited
The greatest amount of damage and debris
Piles of stacked matierals that act as a fuel
Which is a responsibility of a Fire Fighter II concerning evidence at a fire investigation?
Detaining bystanders who may have information about evidence
Briefing the press about the cause of the fire
Restricting access to the scene in order to protect evidence
Determining which evidence is admissible in court
An occupant stating that the room smelled like propane immediately before the fire started is an example of ______ evidence.
Circumstantial
Trace
Direct
Physical
Which action should be carefully conducted, because it can cause destruction or contamination of evidence at a fire scene?
Size-up
Rehabilitation
Rescue
Overhaul
After completing equipment maintenance, it is important to clean the work area and:
Immediately report completion to the company officer
Contact the manufacturer to verify that maintenance is complete
Document maintenanace per local SOPs
Ask another firefighter to complete a secondary inspection
When service testing a fire hose, the:
Hose should be tested by just one person, so there is no confusion
Hose should be tested three times to verify that there are no errors in testing
Testing area should be kept as dry as possible
Test should be conducted on a soft surface such as grass or dirt
Why should test lengths of hose not exceed 300 feet (100 m) in length?
Guages won't deliver proper results with longer lengths of hose
Longer lengths are susceptible to damage during testing
It is difficult to purge air from the longer lengths of hose
Longer Lengths are too difficult to carry and put in place
Which is a safety procedure related to fire hose testing?
Always test hoses in lengths greater than 300 feet (100m)
Only walk near pressurizeed hose when necessary
Always wear full structural PPE
Only use portable tanks as a water source
What should you do if you find a problem when maintaining a portable generator?
Report the problem, but keep the generator in service
Attempt to repair it
Send it back to the manufacturer
Consult the manual to determine the proper action
Which piece of equipment is used to prevent pressurized hose from dangerously whipping back and forth if it ruptures?
Nozzle equipped with a shutoff valve
Hose test gate valve
Apparatus-mounted proportioner
Hose clamp
In order to prevent damage to a portable generator, always:
Change the fuel before starting it
Avoid starting it with equipment plugged into it and turned on
Start the generator under load
Run the generator for at lteast ten minutes before plugging equipment into it
Which type of equipment is NOT typically maintained by a Fire Fighter II?
Portable lighting systems
Portable generators
Hydraulic and Pneumatic tools
Apparatus eletrical systems
Replace any spark plug that:
Is covered in oil and grime
Shows signs of arcing
Is not stamped with date of manufacture
Has been used for more than 6 months
When maintaining portable lighting equipment, it is safest to:
Replace bulbs immediately after shutting off the power
Connect each light to the generator one at a time
Connect all lights to the generator at the same time before stating generator
Replace the bulbs while the power is still turned on
When testing fire hose, it is important to:
Make sure that hose lengths are at least 300 feet (100m) long
Wear full structural PPE and SCBA
Charge large diameter hose before laying it out on the ground
Close valves slowly to prevent water hammer
 
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