NAFI Test
The basic methodology of the fire investigation should rely on the use of a ______________________
and attention to all relevant details.
a. systematic approach
b. approximation approach
c. methodology approach
d. general approach correct answera. systematic approach
With few exceptions, the proper methodolgy for a fire or explosion investigation is to first
_____________________ then investigate the cause, circumstances, conditions, or agencies that
brought the ignition source, fuel, and oxidant together.
a. determine responsibility
b. determine and establish origin(s)
c. determine if it is a criminal action
d. all of the above correct answerb. determine and establish origin(s)
The process of determining the origin, cause, development, and responsibility as well as the failure
analysis of a fire or explosion is the definition of _________________________.
a. fire investigation
b. fire scene reconstruction
c. fire evaluation
d. fire analysis correct answerd. fire analysis
The process of determining the origin, cause, and responsibility for a fire or explosion is
___________________________.
,a. fire analysis
b. fire investigation
c. fire scene survey
d. fire evaluation correct answerb. fire investigation
The _____________________ is the systematic pursite of knowledge involving the recognition and
formulation of a problem, the collection of data through observation and experiment, and the
formulation and testing of a hypothesis.
a. scientific method
b. scientific examination
c. scientific survey
d. scientific theory correct answera. scientific method
____________________ are the visible or measurable physical effects that remain after a fire. These
include thermal effects on materials, such as charring, oxidation, consumption of combustibles, smoke
and soot deposits, distortion, melting, color changes, changes in character of materials, structural
collapse, and other effects.
a. Fire arrows
b. Fire pointers
c. Fire patterns
d. Flammable patterns correct answerc. Fire patterns
Distortion, breakage, deterioration, or other fault in an item, component, system, assembly, or structure
that results in unsatisfactory performance of the function for which it was designed is called
________________.
a. broken
b. distorted
,c. failure
d. faulty correct answerc. failure
Vehicle fire inspections may present many other situations that pose safety hazards to the investigator.
These can include:
a. fuel leaks
b. expelled lubricants
c. electrical energy stored in the battery
d. all of the above correct answerd. all of the above
The burn or damage patterns remaining on the body panels and in the interior of the vehicle are
primarily used to locate the ______________________.
a. origin of the fire
b. potential ignition sources
c. fuel loads
d. all of the above correct answerd. all of the above
A wide variety of materials and substances may serve as the first materials ignited in motor vehicle fires.
These include engine fuels; transmission,·power steering, and brake fluids; coolants; lubricants; and the
vehicle interior materials or cargo. Once a fire is started, any of these materials may contribute as a
secondary fuel, affecting the fire growth rate and the ultimate damage sustained.
a. True
b. False correct answera. True
Solid fuels are less common than liquids and gasses as the first materials ignited in motor vehicle fires.
The exception would be scenarios where overloaded wiring or smoking materials are possible ignition
sources or where the vehicle is subject to an exposure fire.
,a. True
b. False correct answera. True
In most instances, the sources of ignition energy in motor vehicle fires are the same as those associated
with structural fires, arcs, overloaded wiring, open flames, and smoking materials. There are, however,
some unique sources that should be considered, such as the hot surfaces of the:
a. catalytic converter
b. turbocharger
c. manifold
d. all of the above correct answerd. all of the above
When the engine is not running, the primary source of electrical energy in a motor vehicle is the
_____________________.
a. alternator
b. distributor
c. battery
d. fuel pump correct answerc. battery (can also be other components)
14. When the ignition is off and the vehicle is not running, vehicle circuits having a+ 12 volt potential will
still supply current from ______________ to ______________.
a. battery to starter
b. battery to alternator
c. battery to ignition
d. all of the above correct answerd. all of the above
When the ignition is off and the vehicle is not running, vehicle circuits will still supply current to
_____________.
, a. clock
b. lights
c. power door locks
d. all of the above correct answerd. all of the above (clock is not listed)
Protection of electrical circuits in motor vehicles is provided by:
a. fuses
b. circuitbreakers
c. fusible links
d. all of the above correct answerd. all of the above
Electrical problems in circuits protected by fuses cannot start a fire.
a. True
b. False correct answerb. False
The most common open flame in a carburated vehicle fire is:
a. lighted match
b. pilot flames or operating burners
c. catalytic converter
d. a backfire through the carburator correct answerd. a backfire through the carburetor (bad question)
There are two basic fuel systems used in gasoline powered motor vehicles:
a. vacuum/low pressure carbureted system
b. high pressure fuel injected system
The basic methodology of the fire investigation should rely on the use of a ______________________
and attention to all relevant details.
a. systematic approach
b. approximation approach
c. methodology approach
d. general approach correct answera. systematic approach
With few exceptions, the proper methodolgy for a fire or explosion investigation is to first
_____________________ then investigate the cause, circumstances, conditions, or agencies that
brought the ignition source, fuel, and oxidant together.
a. determine responsibility
b. determine and establish origin(s)
c. determine if it is a criminal action
d. all of the above correct answerb. determine and establish origin(s)
The process of determining the origin, cause, development, and responsibility as well as the failure
analysis of a fire or explosion is the definition of _________________________.
a. fire investigation
b. fire scene reconstruction
c. fire evaluation
d. fire analysis correct answerd. fire analysis
The process of determining the origin, cause, and responsibility for a fire or explosion is
___________________________.
,a. fire analysis
b. fire investigation
c. fire scene survey
d. fire evaluation correct answerb. fire investigation
The _____________________ is the systematic pursite of knowledge involving the recognition and
formulation of a problem, the collection of data through observation and experiment, and the
formulation and testing of a hypothesis.
a. scientific method
b. scientific examination
c. scientific survey
d. scientific theory correct answera. scientific method
____________________ are the visible or measurable physical effects that remain after a fire. These
include thermal effects on materials, such as charring, oxidation, consumption of combustibles, smoke
and soot deposits, distortion, melting, color changes, changes in character of materials, structural
collapse, and other effects.
a. Fire arrows
b. Fire pointers
c. Fire patterns
d. Flammable patterns correct answerc. Fire patterns
Distortion, breakage, deterioration, or other fault in an item, component, system, assembly, or structure
that results in unsatisfactory performance of the function for which it was designed is called
________________.
a. broken
b. distorted
,c. failure
d. faulty correct answerc. failure
Vehicle fire inspections may present many other situations that pose safety hazards to the investigator.
These can include:
a. fuel leaks
b. expelled lubricants
c. electrical energy stored in the battery
d. all of the above correct answerd. all of the above
The burn or damage patterns remaining on the body panels and in the interior of the vehicle are
primarily used to locate the ______________________.
a. origin of the fire
b. potential ignition sources
c. fuel loads
d. all of the above correct answerd. all of the above
A wide variety of materials and substances may serve as the first materials ignited in motor vehicle fires.
These include engine fuels; transmission,·power steering, and brake fluids; coolants; lubricants; and the
vehicle interior materials or cargo. Once a fire is started, any of these materials may contribute as a
secondary fuel, affecting the fire growth rate and the ultimate damage sustained.
a. True
b. False correct answera. True
Solid fuels are less common than liquids and gasses as the first materials ignited in motor vehicle fires.
The exception would be scenarios where overloaded wiring or smoking materials are possible ignition
sources or where the vehicle is subject to an exposure fire.
,a. True
b. False correct answera. True
In most instances, the sources of ignition energy in motor vehicle fires are the same as those associated
with structural fires, arcs, overloaded wiring, open flames, and smoking materials. There are, however,
some unique sources that should be considered, such as the hot surfaces of the:
a. catalytic converter
b. turbocharger
c. manifold
d. all of the above correct answerd. all of the above
When the engine is not running, the primary source of electrical energy in a motor vehicle is the
_____________________.
a. alternator
b. distributor
c. battery
d. fuel pump correct answerc. battery (can also be other components)
14. When the ignition is off and the vehicle is not running, vehicle circuits having a+ 12 volt potential will
still supply current from ______________ to ______________.
a. battery to starter
b. battery to alternator
c. battery to ignition
d. all of the above correct answerd. all of the above
When the ignition is off and the vehicle is not running, vehicle circuits will still supply current to
_____________.
, a. clock
b. lights
c. power door locks
d. all of the above correct answerd. all of the above (clock is not listed)
Protection of electrical circuits in motor vehicles is provided by:
a. fuses
b. circuitbreakers
c. fusible links
d. all of the above correct answerd. all of the above
Electrical problems in circuits protected by fuses cannot start a fire.
a. True
b. False correct answerb. False
The most common open flame in a carburated vehicle fire is:
a. lighted match
b. pilot flames or operating burners
c. catalytic converter
d. a backfire through the carburator correct answerd. a backfire through the carburetor (bad question)
There are two basic fuel systems used in gasoline powered motor vehicles:
a. vacuum/low pressure carbureted system
b. high pressure fuel injected system
