ALL FIREFIGHTER 1 PRACTICE TEST
UPDATED EXAM SCRIPT 2026 TEST
PAPER QUESTIONS AND SOLUTIONS
GRADED A+
◉ Firefighters working in the exhaust portion of the flow path will:
Answer: feel the increase in temperature as the velocity and/or
turbulence increases.
◉ What provides the best indicators of structural integrity?
Answer: Information gathered at the scene
◉ In a compartment fire, the interface between the hot gas layers and the
cooler layer of air is commonly referred to as the:
Answer: neutral plane
◉ What is the likely result if additional air is allowed into an already-
ventilated compartment fire?
Answer: Higher peak release rate
◉ Fire spreading from a wall to a nearby couch due to radiant heat
transfer is an example of:
Answer: heat reflectivity
◉ Fire develops through four stages: incipient, growth, ___, and decay.
,Answer: Fully-developed
◉ When a structural member such as a window, roof, or doorway fails,
introducing a new source of oxygen to a fire, ___ ventilation has
occurred.
Answer: unplanned
◉ Sawdust ignites more easily than a long because the sawdust has a
higher:
Answer: surface-to-mass ratio
◉ A collapsed storage shed that is fully involved in flames would be an
example of a:
Answer: fully-developed fuel-limited fire
◉ heat that is radiated to the insulating air layer between PPE and your
body:
Answer: can cause heat stress and failure of the PPE
◉ What will establish new flow pass between the fire compartment and
exterior vents of the building?
Answer: Firefighters advancing a hose line through an open door or
ventilating windows to make entry into a building
,◉ When a substance changes from one type of matter into another, such
as two or more substances combining to form compounds, the substance
undergoes a:
Answer: chemical reaction
◉ Gaseous fuels can be the most dangerous of all fuel types because
they:
Answer: are already in the physical state required for ignition
◉ What occurs when a mixture of unburned fuel gases and oxygen come
in contact with an ignition source?
Answer: smoke explosion
◉ Which heat transfer mechanism is dependent on several factors
including the turbulence and velocity of moving gases?
Answer: convection
◉ In a compartment fire, smoke flashover indicators include rapidly
increasing volume, turbulence, optical density, and:
Answer: darkening color
◉ the flow path of a structure fire is comprised of two regions: the
ambient air flow in and the:
Answer: hot exhaust flow out
, ◉ The ___ stage of fire development occurs when the heat release rate
of the fire has reached its peak.
Answer: fully developed
◉ What may occur if water is added to a burning liquid that is less dense
than water?
Answer: The water may disperse the burning liquid instead of
extinguishing it
◉ To ensure that the decay stage of a ventilation-limited fire is the fire's
final stage, firefighters must provide a controlled transmission of a fire
in the decay stage from ventilation-limited to fuel-limited, by:
Answer: restricting ventilation until the heat transfers out of the
compartment
◉ What may occur in an oxidation reaction when the heat generated
exceeds the heat being lost?
Answer: spontaneous ignition
◉ Which type of electrical heating occurs when the current flowing
through a conductor exceeds its design limits?
Answer: overcurrent or overload
◉ Which is an indicator for potential backdraft?
Answer: pulsing smoke movement around small openings in the
building
UPDATED EXAM SCRIPT 2026 TEST
PAPER QUESTIONS AND SOLUTIONS
GRADED A+
◉ Firefighters working in the exhaust portion of the flow path will:
Answer: feel the increase in temperature as the velocity and/or
turbulence increases.
◉ What provides the best indicators of structural integrity?
Answer: Information gathered at the scene
◉ In a compartment fire, the interface between the hot gas layers and the
cooler layer of air is commonly referred to as the:
Answer: neutral plane
◉ What is the likely result if additional air is allowed into an already-
ventilated compartment fire?
Answer: Higher peak release rate
◉ Fire spreading from a wall to a nearby couch due to radiant heat
transfer is an example of:
Answer: heat reflectivity
◉ Fire develops through four stages: incipient, growth, ___, and decay.
,Answer: Fully-developed
◉ When a structural member such as a window, roof, or doorway fails,
introducing a new source of oxygen to a fire, ___ ventilation has
occurred.
Answer: unplanned
◉ Sawdust ignites more easily than a long because the sawdust has a
higher:
Answer: surface-to-mass ratio
◉ A collapsed storage shed that is fully involved in flames would be an
example of a:
Answer: fully-developed fuel-limited fire
◉ heat that is radiated to the insulating air layer between PPE and your
body:
Answer: can cause heat stress and failure of the PPE
◉ What will establish new flow pass between the fire compartment and
exterior vents of the building?
Answer: Firefighters advancing a hose line through an open door or
ventilating windows to make entry into a building
,◉ When a substance changes from one type of matter into another, such
as two or more substances combining to form compounds, the substance
undergoes a:
Answer: chemical reaction
◉ Gaseous fuels can be the most dangerous of all fuel types because
they:
Answer: are already in the physical state required for ignition
◉ What occurs when a mixture of unburned fuel gases and oxygen come
in contact with an ignition source?
Answer: smoke explosion
◉ Which heat transfer mechanism is dependent on several factors
including the turbulence and velocity of moving gases?
Answer: convection
◉ In a compartment fire, smoke flashover indicators include rapidly
increasing volume, turbulence, optical density, and:
Answer: darkening color
◉ the flow path of a structure fire is comprised of two regions: the
ambient air flow in and the:
Answer: hot exhaust flow out
, ◉ The ___ stage of fire development occurs when the heat release rate
of the fire has reached its peak.
Answer: fully developed
◉ What may occur if water is added to a burning liquid that is less dense
than water?
Answer: The water may disperse the burning liquid instead of
extinguishing it
◉ To ensure that the decay stage of a ventilation-limited fire is the fire's
final stage, firefighters must provide a controlled transmission of a fire
in the decay stage from ventilation-limited to fuel-limited, by:
Answer: restricting ventilation until the heat transfers out of the
compartment
◉ What may occur in an oxidation reaction when the heat generated
exceeds the heat being lost?
Answer: spontaneous ignition
◉ Which type of electrical heating occurs when the current flowing
through a conductor exceeds its design limits?
Answer: overcurrent or overload
◉ Which is an indicator for potential backdraft?
Answer: pulsing smoke movement around small openings in the
building
