Incident Safety Officer – Fire Department Safety Verified
Multiple Choice and Conceptual Actual Emended Exam
Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. Ghosting is characterized as the - usually seen as -. previous teachings has
labeled this same phenomenon as -. - ANSWER intermittent ignition of
small pockets of smoke
fingers of flame that dance through the upper smoke layer
rollover
2. Ghosting is not necessarily a hostile fire event but serves as a warning sign
of impending - - ANSWER flash over or flame over
3. Flame over is a hostile fire event that includes the - - ANSWER ignition
and sustained burning of the overhead smoke layer within a room and or
hallway.
4. Where plenty of air exists, a flame over typically originates at - and travels -
. The flame over travel is usually opposite in a ventilation limited phase fire
that finally gets air: the flames start - - ANSWER -the seat of the fire
and travels along the heat flow paths/
-near the ventilation opening and burn back to the fire seat where they can
trigger a flashover of the room
,5. Smoke explosion is a hostile fire event that occurs when -. The result is a -
ignition of that pocket with no sustained burning - ANSWER a spark or
flame is introduced into a pocket of smoke that is below ignition
temperature but above some aggregate flashpoint.
split second
6. Smoke explosions typically occur in a - - ANSWER trapped smoke area
away from the fire , such as dead end hallway, top of a stairwell, void space
7. Flashover is a sudden hostile fire event that occurs when - - ANSWER
all of the surfaces and contents in a space reach their ignition temperature
nearly simultaneously, resulting in full room involvement.
8. In most cases a flashover occurs because the room itself can no longer - -
ANSWER absorb heat and begins to reflect radiant energy back into its
self
9. Backdraft is an explosive event that occurs when - - ANSWER air is
suddenly reintroduced into a closed space that is filled with pressurized
ignition temperature, and oxygen deprived products of combustion and
pyrolysis.
10.Back draft and explosive growth event differ in the rate of air introduction
and the resulting force and speed of ignition. The explosive growth event is
triggered by a volume shift between smoke and air that occurs over - to -
time span. whereas backdraft is - upon the introduction of air to the
oxygen depleted environment - ANSWER 10 - 90seconds
,instantaneous
11.Smoke volume tells very little about a fire but it sets the stage for
understanding the - - ANSWER amount of fuels that are off gassing in a
given space
12.Smoke velocity is an indicator of - - ANSWER pressure that has built up
in the building
13.Two forces cause smoke to pressurize in a building:
When smoke is leaving a building, its velocity is caused by - if it rises quickly
and then slows gradually (this warrants attention)
Smoke caused by - will immediately slow down and balance with the outside
air flow (often sinks) - ANSWER Convection heat and smoke volume
Heat
restricted volume
14.The faster smoke moves the - - ANSWER more heat it has
15.The flow of smoke can be - or - - ANSWER turbulent ("agitated"
"boiling" or "angry")
laminar (smooth, calm or following a straight line)
16.When the fire compartment can no longer absorb heat, the reflecting
radiant energy causes all the smoke to become -. If the box is still
, absorbing heat the heat of the smoke is subsequently absorbed, leaving a
more - - ANSWER turbulent; (impending flash over)
stable and smooth characteristic (laminar flow)
17.Faster smoke is - - ANSWER Closer to the fire seat
18.Frequency is the probability that an injurious event -, and it can be best
described as - - or - based on the number of times that a particular hazard
is present or the number of times an injury results from the hazard -
ANSWER Can happen,
Low, moderate or high
19.While velocity can help you understand much about a fire (how hot it is,
where it is) density tells you - - ANSWER How bad it is going to be
20.The - the smoke, the more spectacular the flashover or fire spread will be.
On a practical base, thick smoke spreads a fire event - than less dense
smoke. - ANSWER Thicker
Farther
21.Black smoke that is high velocity and very thin is -. Interpreted from
outside a building, thin black smoke means that - - ANSWER Flame
pushed.
Open (and ventilated) flaming is nearby
Multiple Choice and Conceptual Actual Emended Exam
Questions With Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update
1. Ghosting is characterized as the - usually seen as -. previous teachings has
labeled this same phenomenon as -. - ANSWER intermittent ignition of
small pockets of smoke
fingers of flame that dance through the upper smoke layer
rollover
2. Ghosting is not necessarily a hostile fire event but serves as a warning sign
of impending - - ANSWER flash over or flame over
3. Flame over is a hostile fire event that includes the - - ANSWER ignition
and sustained burning of the overhead smoke layer within a room and or
hallway.
4. Where plenty of air exists, a flame over typically originates at - and travels -
. The flame over travel is usually opposite in a ventilation limited phase fire
that finally gets air: the flames start - - ANSWER -the seat of the fire
and travels along the heat flow paths/
-near the ventilation opening and burn back to the fire seat where they can
trigger a flashover of the room
,5. Smoke explosion is a hostile fire event that occurs when -. The result is a -
ignition of that pocket with no sustained burning - ANSWER a spark or
flame is introduced into a pocket of smoke that is below ignition
temperature but above some aggregate flashpoint.
split second
6. Smoke explosions typically occur in a - - ANSWER trapped smoke area
away from the fire , such as dead end hallway, top of a stairwell, void space
7. Flashover is a sudden hostile fire event that occurs when - - ANSWER
all of the surfaces and contents in a space reach their ignition temperature
nearly simultaneously, resulting in full room involvement.
8. In most cases a flashover occurs because the room itself can no longer - -
ANSWER absorb heat and begins to reflect radiant energy back into its
self
9. Backdraft is an explosive event that occurs when - - ANSWER air is
suddenly reintroduced into a closed space that is filled with pressurized
ignition temperature, and oxygen deprived products of combustion and
pyrolysis.
10.Back draft and explosive growth event differ in the rate of air introduction
and the resulting force and speed of ignition. The explosive growth event is
triggered by a volume shift between smoke and air that occurs over - to -
time span. whereas backdraft is - upon the introduction of air to the
oxygen depleted environment - ANSWER 10 - 90seconds
,instantaneous
11.Smoke volume tells very little about a fire but it sets the stage for
understanding the - - ANSWER amount of fuels that are off gassing in a
given space
12.Smoke velocity is an indicator of - - ANSWER pressure that has built up
in the building
13.Two forces cause smoke to pressurize in a building:
When smoke is leaving a building, its velocity is caused by - if it rises quickly
and then slows gradually (this warrants attention)
Smoke caused by - will immediately slow down and balance with the outside
air flow (often sinks) - ANSWER Convection heat and smoke volume
Heat
restricted volume
14.The faster smoke moves the - - ANSWER more heat it has
15.The flow of smoke can be - or - - ANSWER turbulent ("agitated"
"boiling" or "angry")
laminar (smooth, calm or following a straight line)
16.When the fire compartment can no longer absorb heat, the reflecting
radiant energy causes all the smoke to become -. If the box is still
, absorbing heat the heat of the smoke is subsequently absorbed, leaving a
more - - ANSWER turbulent; (impending flash over)
stable and smooth characteristic (laminar flow)
17.Faster smoke is - - ANSWER Closer to the fire seat
18.Frequency is the probability that an injurious event -, and it can be best
described as - - or - based on the number of times that a particular hazard
is present or the number of times an injury results from the hazard -
ANSWER Can happen,
Low, moderate or high
19.While velocity can help you understand much about a fire (how hot it is,
where it is) density tells you - - ANSWER How bad it is going to be
20.The - the smoke, the more spectacular the flashover or fire spread will be.
On a practical base, thick smoke spreads a fire event - than less dense
smoke. - ANSWER Thicker
Farther
21.Black smoke that is high velocity and very thin is -. Interpreted from
outside a building, thin black smoke means that - - ANSWER Flame
pushed.
Open (and ventilated) flaming is nearby
