NAFI CFEI Exam 1 Questions with 100%
Correct Answers
Absolute Temperature
Absolute A temperature measured in Kelvins ( K ) or Rankines ( R ) .
Accelerant
A fuel or oxidizer , often an ignitible liquid , intentionally used to initiate a fire or increase the
rate of growth or spread of fire .
Accident
ANSWER An unplanned event that interrupts an activity and sometimes causes injury or damage
or a chance occurrence arising from unknown causes ; an unexpected happening due to
carelessness , ignorance , and the like .
Active Fire Protection System
A system that uses moving mechanical or electrical parts to achieve a fire protection goal .
Active Fire Protection System
A system that uses moving mechanical or electrical parts to achieve a fire protection goal .
Ambient
Someone's or something's surroundings , especially as they pertain to the local environment ; for
example , ambient air and ambient temperature .
Ampacity
,The maximum current , in amperes , that a conductor can carry continuously under the
conditions of use without exceeding its temperature rating .
Ampere
The unit of electric current that is equivalent to a flow of one coulomb per second ; one coulomb
is defined as 6.24 x 10 ^ 18 electrons .
Arc
A high - temperature luminous electric discharge across a gap or through a medium such as
charred insulation .
Arc Mapping
The systematic evaluation of the electrical circuit configuration spatial relationship of the circuit
components , and identification of electrical arc sites to assist in the identification of the area of
origin and analysis of the fire's spread .
Arc Site
The location on a conductor with localized damage that resulted from an electrical arc .
Arcing Through Char
Arcing associated with a matrix of charred material ( e.g. , charred conductor insulation ) that
acts as a semiconductive medium .
Area of Origin
A structure , part of a structure , or general geographic location within a fire scene , in which the
" point of origin " of a fire or explosion is reasonably believed to be located .
,Arrow Pattern
A fire pattern displayed on the cross - section of a burned wooden structural member
Arson
The crime of maliciously and intentionally , or recklessly , starting a fire . or causing an
explosion .
Autoignition
Initiation of combustion by heat but without a spark or flame .
Autoignition Temperature
The lowest temperature at which a combustible material ignites in air without a spark or flame .
Backdraft
A deflagration resulting from the sudden introduction of air into a confined space containing
oxygen - deficient products of incomplete combustion .
Bead
A rounded globule of re - solidified metal at the end of the remains of an electrical conductor that
was caused by arcing and is characterized by a sharp line of demarcation between the melted and
unmelted conductor surfaces .
Blast Pressure Front
The expanding leading edge of an explosion reaction that separates a major difference in
pressure between normal ambient pressure ahead of the front and potentially damaging high
pressure at and behind the front .
, BLEVE
Explosions involving vessels that contain liquids under pressure at temperatures above their
atmospheric boiling points .
Bonding
The permanent joining of metallic parts to form an electrically conductive path that ensures
electrical continuity and the capacity to conduct safely any current likely to be imposed .
British Thermal Unit ( BTU )
The quantity of heat required to raise the temperature of one pound of water one degree
Fahrenheit at the pressure of one atmosphere and temperature of 60 degrees Fahrenheit .
Burning Rate
The at which heat energy is generated by burning .
Calcination of Gypsum
A fire effect realized in gypsum products , including wallboard , as a result of exposure to heat
that drives off free and chemically bound water .
Calorie
The amount of heat necessary to raise 1 gram of water 1 degree Celsius at the pressure of 1
atmosphere and temperature of 15 degrees Celsius .
Cause
Correct Answers
Absolute Temperature
Absolute A temperature measured in Kelvins ( K ) or Rankines ( R ) .
Accelerant
A fuel or oxidizer , often an ignitible liquid , intentionally used to initiate a fire or increase the
rate of growth or spread of fire .
Accident
ANSWER An unplanned event that interrupts an activity and sometimes causes injury or damage
or a chance occurrence arising from unknown causes ; an unexpected happening due to
carelessness , ignorance , and the like .
Active Fire Protection System
A system that uses moving mechanical or electrical parts to achieve a fire protection goal .
Active Fire Protection System
A system that uses moving mechanical or electrical parts to achieve a fire protection goal .
Ambient
Someone's or something's surroundings , especially as they pertain to the local environment ; for
example , ambient air and ambient temperature .
Ampacity
,The maximum current , in amperes , that a conductor can carry continuously under the
conditions of use without exceeding its temperature rating .
Ampere
The unit of electric current that is equivalent to a flow of one coulomb per second ; one coulomb
is defined as 6.24 x 10 ^ 18 electrons .
Arc
A high - temperature luminous electric discharge across a gap or through a medium such as
charred insulation .
Arc Mapping
The systematic evaluation of the electrical circuit configuration spatial relationship of the circuit
components , and identification of electrical arc sites to assist in the identification of the area of
origin and analysis of the fire's spread .
Arc Site
The location on a conductor with localized damage that resulted from an electrical arc .
Arcing Through Char
Arcing associated with a matrix of charred material ( e.g. , charred conductor insulation ) that
acts as a semiconductive medium .
Area of Origin
A structure , part of a structure , or general geographic location within a fire scene , in which the
" point of origin " of a fire or explosion is reasonably believed to be located .
,Arrow Pattern
A fire pattern displayed on the cross - section of a burned wooden structural member
Arson
The crime of maliciously and intentionally , or recklessly , starting a fire . or causing an
explosion .
Autoignition
Initiation of combustion by heat but without a spark or flame .
Autoignition Temperature
The lowest temperature at which a combustible material ignites in air without a spark or flame .
Backdraft
A deflagration resulting from the sudden introduction of air into a confined space containing
oxygen - deficient products of incomplete combustion .
Bead
A rounded globule of re - solidified metal at the end of the remains of an electrical conductor that
was caused by arcing and is characterized by a sharp line of demarcation between the melted and
unmelted conductor surfaces .
Blast Pressure Front
The expanding leading edge of an explosion reaction that separates a major difference in
pressure between normal ambient pressure ahead of the front and potentially damaging high
pressure at and behind the front .
, BLEVE
Explosions involving vessels that contain liquids under pressure at temperatures above their
atmospheric boiling points .
Bonding
The permanent joining of metallic parts to form an electrically conductive path that ensures
electrical continuity and the capacity to conduct safely any current likely to be imposed .
British Thermal Unit ( BTU )
The quantity of heat required to raise the temperature of one pound of water one degree
Fahrenheit at the pressure of one atmosphere and temperature of 60 degrees Fahrenheit .
Burning Rate
The at which heat energy is generated by burning .
Calcination of Gypsum
A fire effect realized in gypsum products , including wallboard , as a result of exposure to heat
that drives off free and chemically bound water .
Calorie
The amount of heat necessary to raise 1 gram of water 1 degree Celsius at the pressure of 1
atmosphere and temperature of 15 degrees Celsius .
Cause
