Fire Investigator Flashcards
1
Q
term
A
definition
2
Q
Who should be responsible for monitoring the perimeter when a threat from suspects or individuals associated with the fire scene exists
A
p. 41*B.) Law enforcement
3
Q
What is used to ensure that multiple priorities from multiple agencies are considered during the resolution of an incident
A
p. 25*A.) Unified command structure
4
Q
Which NFPA standard should be consulted for operations dealing with fuel gas
A
p. 44*C.) NFPA 54
5
Q
Which gas levels are more practical to be monitored when conducting a fire investigation
A
p. 32*A.) Oxygen and carbon monoxide
6
Q
What should mark the end of the site safety assessment
A
p. 27*C.) Investigation conclusion
7
Q
How long will the organic vapor/acid gas cartridge beEffective
A
p. 33*B.) 8-10 hours
8
Q
Which NFPA standard is used to establish the minimum job performance requirements of the fire investigator
A
*C.) NFPA 1033
9
Q
What is usually best to utilize when interior lighting is needed during an investigation
A
p. 40*A.) Portable lighting
10
Q
Which two Constitutional Amendments apply to due process
A
p. 13*A.) Fifth and Fourteenth
11
Q
1 Where should any generators used to power portable lighting be operated
A
p. 41*D.) Exterior of the building
12
Q
When should the atmosphere be tested when an investigation must take place
A
p. 29*C.) Before entry
13
Q
What color on the hazardous material placard indicates the flammability of the product being transported
A
p. 35*C.) Red
14
Q
1 What is the primary objective of a site safety assessment
A
p. 25*B.) Minimize the level of risk to personnel
15
Q
What should be used to determine the location of the perimeter that is set at an explosion scene
A
p. 41*A.) Farthest piece of debris found
16
Q
Which NFPA standard lists the standard equipment and tool list for a fire investigator
A
p. 15*D.) NFPA 1033
17
Q
What color cord is best when portable lighting is being used during an investigation
A
p. 40*D.) Orange
18
Q
What number of investigators should be used when conducting witness and suspect interviews
A
p. 42*D.) Two
19
Q
1 When should a fire investigator’s tools be cleaned
A
p. 15*D.) After each use
20
Q
What is useful to wear for the highest level of hand protection during an inspection
A
p. 29*A.) Latex gloves under leather gloves
21
Q
2 Which is NOT a correct guideline for working safely near Biohazards
A
p. 36*A.) Decontaminate all equipment after use at the station
22
Q
What should be done when a floor integrity issue is discovered at the scene when an investigation is needed
A
p. 26*D.) Mark the location
23
Q
What body part is NOT included in the list of minimum body parts that must be protected during an inspection
A
p. 27*C.) Chest
24
Q
Against which type of radiation does structural firefighter bunker gear and chemical protective suits provide no barrier
A
p. 30*D.) Gamma
25
What should the investigator do when a family pet is encountered during the course of the investigation
p. 42*A.) Wait for it to be subdued before entering the area
26
What is the first place the fire investigator should go when arriving at an incident scene
p. 25*A.) Command post
27
Who should initially survey the hazardous material incident scene and determine it is safe for the investigation to proceed
p. 33*A.) Incident commander
28
Which type of radiation generally bounces off of clothing
p. 30*C.) Alpha
29
Where can the investigator go to eat and rest during the Operation
p. 33*A.) Rehab facility
30
Which has little to do with private-sector investigations
p. 14-15*B.) Due process clauses
31
What is the formal review by a third-party of the policies, procedures, and processes used by an organization providing certification
p. 12*C.) Accreditation
32
Who may investigators work with due to their expertise on construction and potential hazards on the fireground
p. 9*A.) Building department
33
Who is responsible for scene safety if the fire investigator is on the scene alone
p. 26*B.) Investigator
34
Which would be seen on the yellow portion of the hazardous material placard to indicate the product is normally stable
p. 35*C.) 0
35
What should be the potential collapse zone for walls and structurally damaged walls and/or chimneys
p. 38*D.)1.5 times the height of the object
36
Whose primary function involves determining the cause of fires that occur within their jurisdiction
p. 8*C.) Fire investigator
37
When should the fire investigator be inserted into the incident management system
p. 24*C.) Upon arrival at the scene
38
For safety at the scene, what is the minimum number of fire investigators that are recommended
p. 38*A.) Two
39
During which stage of the fire is the risk of exposure to the toxic byproducts of combustion the greatest to the health and safety of the fire inspector
p. 30*D.) Decay
40
What should be used to cordon off a cesspool or drainage ditch that will pose a health hazard
p. 45*D.) Scene tape
41
What can be worn by the investigator to protect against cuts and abrasions
p. 28*D.) Bunker coat
42
Which private resource can the fire investigator use as a source of information regarding distribution systems in the area
p. 11*B.) Utility companies
43
Which is NOT a correct statement about investigation operations around electricity
p. 44*A.) Utilize rubber footwear as an insulator
44
Which is NOT a normal function of arson task forces
p. 11*D.) Performing investigations
45
With which of the following is it very important that the fire investigator maintain a relationship to assist in the investigation of fires
p. 9*D.) Insurance industry
46
What is the minimum number of paths of egress that the fire investigator should have during operations in the event of a fire rekindle
p. 38*D.) Two
47
What determines the heat transfer rate between two bodies
p. 61*C.) Temperature differential
48
Which fire class involves combustible metals
p. 77*B.) Class D
49
In which of the following locations will the fire plume expand vertically with higher plume temperatures
*D.) Fire in corner and against a wall
50
During the growth phase, what will indicate higher Temperatures
p. 82*D.) Increased pressure
51
Which construction material acts as a heat sink during fire conditions
p. 93*D.) Masonry
52
What is the violence of a backdraft dependent upon to some Degree
p. 88*D.) Confinement
53
What must happen in order for a liquid to burn
p. 67*D.) It must vaporize
54
Which is NOT a source of heat that commonly results in the ignition of a fuel
p. 59*D.) Sound
55
Gases with a vapor density lower than what value will rise
p. 67*C.) 1.0
56
What is the primary concern regarding the ability to ignite a solid fuel
p. 70*A.) Surface-to-mass ratio
57
What is the temperature at which a liquid releases sufficient vapors to ignite, but not sustain, combustion
p. 67*D.) Flash point
58
Which is the transmission of energy as an electromagneticWave
p. 63*A.) Radiation
59
Which is considered to be the most commonly encountered toxic byproduct of incomplete combustion at structural fires
p. 55*D.) Carbon monoxide
60
Which is NOT a correct statement about fuel geometry
p. 90-91*C.) Fires originating in upper levels will generally extend downward quickly
61
Which type of heating is unintended resistance heating
p. 60*D.) Overcurrent
62
Which can have a significant effect on the fire within a building
*A.) Wind
63
Which is NOT a correct statement about radiated heat
p. 64*C.) Radiant heat is capable of travelling around corners but at a slower rate than in a straight line
64
Which is NOT a correct statement about the six elements ofFlashover
p. 84-85*B.) Spreads full fire involvement within the compartment instantaneously
65
Which result of combustion causes most fire deaths
p. 55*C.) Smoke
66
Which is often the most readily available source of fuel in a compartment fire
p. 90*D.) Contents
67
When trying to extinguish surface combustion, which is notEffective
p. 76*D.) Disrupt the chemical reaction
68
At what rate do most chemical reactions increase with each18^F (10^C) increase in the temperature of the reactingMaterials
p. 60*A.) Double
69
What is used to differentiate the different modes of Combustion
p. 53*D.) Location of the reaction
70
During which fire stage may hot unburned fire gases likely flow from the compartment of origin into adjacent compartments
p. 86*B.) Fully developed
71
Which is NOT a correct statement about ignition
*D.) The autoignition temperature of a substance is always lower than its piloted ignition temperature
72
What acts as an asphyxiant by preventing the body from using oxygen at the cellular level
p. 55*A.) Hydrogen cyanide
73
What mixes with hydrogen chloride to produce hydrochloricAcid
p. 56*B.) Water
74
Which is one of the most fundamental characteristics that influences fire development
p. 90*A.) Mass
75
What results in a complex mixture of combustion products in a structure fire
p. 55*D.) Incomplete combustion
76
What happens as the plume of radiant heat reaches the ceiling during the incipient stage of a fire
p. 79*D.) Spread horizontally across the ceiling
77
What is the transfer of heat energy from a fluid to a solid surface
p. 63*A.) Convection
78
By what factor would doubling the temperature when dealing with radiant heat
p. 64*D.) Sixteen
79
What is the most common source of heat in combustion Reactions
p. 60*A.) Chemical
80
Which type of combustion is better explained with the fireTetrahedron
p. 54*C.) Flaming
81
Which product of combustion is a colorless liquid with a petroleum-like odor
p. 56*B.) Benzene
82
In which stage of pyrolysis can combustion occur and charcoal is formed by the burning process
p. 70*C.) Stage 3
83
What is the primary oxidizing agent in most fires
p. 72*A.) Oxygen
84
What is the oxygen concentration in our atmosphere
p. 52*A.) 21 percent
85
Which fuel gas has the widest flammability range
p. 74*C.) Carbon monoxide
86
With which method of heat transfer will the two objects touch each other
p. 62*D.) Conduction
87
What determines the amount of heat a given material releases during combustion
p. 65*D.) Material's chemical makeup
88
From how many sides can a fire in a fuel package that is located in the corner
p. 80*D.) Two
89
Which two have the most effect on fire investigations
p. 55*A.) Heat and smoke
90
Which factor influences how heat is transferred in relation to the fire
p. 80*C.) Orientation
91
What state must the reducing agent be in for flaming combustion to occur
p. 66*C.) Gas
92
Which is NOT a correct statement about a compartment fire that enters the decay stage due to a lack of oxygen
p. 87*B.) The heat release rate will continue to climb
93
What controls most fires that grow beyond the incipientStage
p. 85*C.) Ventilation
94
What is the thermal or chemical decomposition of fuel because of heat
p. 59*D.) Pyrolysis
95
During which fire stage will it begin to influence the environment within the compartment
p. 80*A.) Growth
96
Which is NOT a correct statement
p. 68*C.) Liquids lighter than water are less challenging toExtinguish
97
What type of energy is heat
p. 57*D.) Kinetic
98
During which event will the fire gases at the ceiling level ignite
p. 84*C.) Rollover
99
Changes in which of the following will most likely be the most significant factor in changing fire behavior within a compartment
p. 93*C.) Ventilation
100
Which is the least conductive material
p. 62*D.) Wood
101
Which has the highest peak heat release rate
p. 66*A.) Polyurethane sofa
102
What is the point where the three elements of the fire triangle come together in sufficient quantities and concentrations so that fire results
p. 53*C.) Ignition—Which is NOT a correct statement? p. 78*D.) When sufficient oxygen is available, fire development is controlled by the configuration of the compartment
103
Where is the stoichiometric ratio generally located for aFuel
p. 73*D.) Near the midpoint of the flammability range
104
What is formed during saponification
p. 77*D.) Soapy film
105
Which is commonly recognized as a backdraft indicator
*D.) Pulsing smoke movement
106
What determines the layers that gases form into when thermal layering occurs
p. 82*C.) Temperature
107
What type of change occurs when a substance changes from one type of matter into another
p. 52*B.) Chemical
108
Where does the neutral pressure exist when thermal layering is occurring
p. 83*C.) Openings
109
Which element is included in the fire tetrahedron but NOT the fire triangle
*D.) Chemical chain reaction
110
At normal ambient temperatures, materials can ignite in oxygen concentrations as low as what value
p. 72*A.) 14 percent
111
What results when the products of combustion are within the flammable range and they ignite when the fire is in the decay stage
p. 87*B.) Smoke explosion
112
What is the process by which a fuel is changed chemically to flammable vapors and carbon due to the presence of sufficient heat
p. 69*B.) Pyrolysis
113
What does the Halon extinguishing agent interfere with that will terminate the combustion reaction
p. 76*A.) Chemical reaction
114
Which fire stage starts with ignition
p. 79*D.) Incipient
115
Which is generated by friction or compression
p. 61*A.) Mechanical heat energy
116
With which fire class is the primary extinguishing mechanism used cooling of the fuel
p. 76*A.) Class A
117
In which occupancy will you find aluminum primarily in window and door frames as well as roof panels and siding
p. 131-132*A.) Residential
118
Which type of membrane roofing is useful for buildings with curved roof surfaces
p. 143*B.) Fluid-applied—Which roof covering is often applied to the structural members of the roof using no intermediate sheathing? p. 141*C.) Wood shingles
119
What is seen at the seat of an explosion when the blast occurs at or near ground level
p. 104*A.) Crater
120
Which type of explosion results from an increase in pressure within a confined container
p. 100*D.) Mechanical
121
In what pattern will an explosion project heat and pressure under ideal circumstances
p. 102*B.) Sphere
122
Which is the most common type of mechanical explosion that investigators will encounter
p. 100*D.) BLEVE
123
What element must be present to form a high explosive
p. 108*A.) High pressure
124
What causes more damage during a detonation
p. 101*B.) Shock wave
125
Which of the following sources of a chemical explosion will the investigator not often encounter
p. 101*D.) Solid
126
What are the interior structural members completely or partially constructed from in a Type III building
p. 135*D.) Wood
127
Where does the foundation transfer the structural load
p. 148*D.) Ground
128
In how many directions is it possible for fire to spread when truss joists are used in floor construction
p. 148*D.) Four
129
What is the main difference between a dust explosion and the gas/vapor explosion
p. 117*A.) Fuel source
130
Which is a main factor that will determine the reaction of wood to fire conditions
p. 125*B.) Moisture content
131
What is the upper range of pressure required to breakGlass
p. 133*A.) 0 psi (07 kPa)
132
What happens to the burning velocity as the fuel is forced around an obstruction during an explosion
p. 114*B.) Increases
133
What material has been used to completely replace castIron
p. 131*D.) Steel
134
In which of the following locations will the investigatorNOT tend to encounter light weight construction
p. 146*A.) Cathedrals
135
What is under pressure that can result in a BLEVE
p. 107*B.) Liquid
136
Which is NOT a correct statement about fires involving roof membranes
p. 142*C.) Fire will spread slowly through the tar layer
137
Where will propane tend to collect in a compartment
p. 111*C.) Near the floor
138
What shape is used to construct trusses
p. 146*A.) Triangle—What does the degree of fire resistance required of a wall or partition depend upon? p. 149*C.) Its purpose
139
What is the basic purpose of the roof
p. 139*C.) Protect the inside of the building from the outside
140
What can affect the time it takes for fire-suppression and warning systems to be activated
p. 143*B.) Ceiling height
141
What can lead to higher than expected interior temperatures during a fire in a log home
p. 138*D.) Dimensions of walls
142
Which is NOT correct about the ignition source during anExplosion
p. 115*C.) Ignition source must be hotter than the auto ignition temperature of the fuel/air mixture
143
What type of energy is the mechanical potential energy converted into during an explosion
p. 100*B.) Kinetic
144
What are key to the explosive reaction
p. 115*A.) Contact and duration of heat transfer
145
Which material is used to insulate steel and wood structural members due to its ability to absorb a great deal of heat
p. 132*B.) Gypsum
146
Which material may be used for the subflooring in manufactured homes
p. 148*B.) Particleboard
147
Which is NOT correct about dust explosions
p. 117*C.) Dust concentrations have an upper explosive limit but no lower explosive limit
148
Which is often used in the construction of fire walls
p. 126*D.) Masonry
149
What normally causes the collapse of a masonry wall during fire conditions
p. 127*D.) Collapse of interior wood framing
150
What determines the overall fire resistance of the reinforced concrete wall
p. 128*C.) Depth of concrete cover
151
What does the fire resistance of a masonry wall dependUpon
p. 126*A.) Material and thickness
152
What size should the collapse exclusion zone be when a building has a masonry exterior wall
p. 127-128*C.) One and one-half times the height of the wall
153
What should be done during the investigation if columns and/or the connections of beams are compromised
p. 143*B.) Shore them up
154
How should it be assumed the masonry wall will collapse when the building is heavily involved in fire
p. 127*C.) Out from the building
155
Which construction type of built in two or more sections at the factory
p. 138*A.) Modular
156
Which is NOT a correct statement about the migration of fuel gases
p. 112-113*C.) Odorants will be more noticeable the farther it travels
157
Which rarely show signs of loss of integrity or seriousDeterioration
p. 127*A.) Bricks
158
What is used to determine the flame speed during anExplosion
p. 113*C.) Center of the explosion
159
Which type of glass may be installed where fire resistance is needed
p. 132*D.) Wired
160
What happens when a blast front is not strong enough to damage a container material
p. 104*A.) Reflects off the surface
161
Which is NOT a correct statement about factors that affect the behavior of fires in a manufactured home
p. 136*B.) Large compartment sizes
162
What may cause cast iron to crack or shatter
p. 131*B.) Cooling with water during fire-fighting operation
163
What is one of the most significant effects fire and heat have on concrete
p. 129*A.) Spalling
164
Where must the gusset plates be nailed to avoid warping and failing quickly when exposed to heat
p. 146*A.) Corner
165
Which phase is responsible for most of the damage during aDeflagration
p. 104*D.) Positive-pressure phase
166
Which is NOT a type of low-order damage from an explosion
p. 101*D.) Debris is small and plentiful
167
With which construction type are the walls, floors, and ceilings manufactured complete with plumbing, electrical wiring, and millwork
p. 137*D.) Prefabricated-Which of the following is the burning velocity NOT dependent upon as it relates to the unburned gases? p. 114*A.) Volume
168
Where does the floor transmit the live and dead load of the floor system within the building
p. 146*C.) Structural frame
169
Who should be called in to assist when there is a migrated fuel gas investigation
p. 112*A.) Utility company
170
Which is NOT a correct statement
p. 109*B.) Ratios above the upper flammable limit are considered too lean for an explosion to occur
171
What is present that helps to keep flames, smoke, and heat from spreading from one room or floor to another
p. 149*D.) Compartmentation
172
With which type of construction can fire spread verticallyUnimpeded
p. 143-144*B.) Balloon-frame
173
Which type of building contains noncombustible structural members and have a specified degree of fire resistance
p. 135*C.) Type I
174
What does secondary damage due to shrapnel often Introduce
p. 104*C.) New sources of fuel
175
What can result as turbulence enhances the fuel-to-air ratio in other areas of a structure
p. 114*D.) Secondary explosions
176
What does any expanding blast front attempt to reach
p. 115*A.) Ventilation point
177
Which is the primary reason for injuries and damage with a detonation
p. 104*C.) Blast-pressure front
178
Which is NOT a correct statement about seated explosions
p. 107*B.) Seated explosions are associated with a lack of sound
179
Plastics with low flammability can produce toxic gases beginning at what temperature
p. 134*A.) 500^F (260^C)
180
What do the burning of interior finishes hasten during a Fire
p. 149*C.) Flashover-What can be used to differentiate between a deflagration and detonation? p. 101*C.) Fuel pressure release rate
181
What changes the shape of the explosion and alters the movement of the gases involved
p. 114*C.) Turbulence
182
When were BLEVEs first studied
p. 107*A.) 1957
183
During a deflagration, what must increase for the speed of the explosion reaction to increase
p. 101*D.) Pressure on the fuel
184
To which force does concrete have little resistance
p. 129*C.) Tensile
185
What is the most significant characteristic of steel for the fire investigator
p. 130*A.) Reaction to high temperatures
186
Which is NOT a commonly used material in the construction of ceilings
p. 143*D.) Tin
187
What material was originally used to construct arches
p. 139*B.) Masonry
188
Which is NOT a correct statement
p. 102*A.) In ideal conditions explosions project heat and pressureIn an upward direction
189
What is the area where a fuel gas is mixing with ambient Air
p. 110*B.) Interface
190
What is the minimum thickness of the concrete in open web joist or truss steel floor systems
p. 147*B.) 2 inches (50 mm)
191
Which is space often created within the building to accommodate building services above the ceiling
p. 150*C.) Interstitial
192
What type of load is designed into the geodesic building
p. 138*D.) Tensile
193
What is the most common explosion that investigators Encounter
p. 109*A.) Gas/vapor
194
Temperature variations over what reading will result in glass cracking
p. 133*C.) 158^F (70^C)
195
Which is a true statement when the air/fuel mixture is slightly richer than stoichiometric
p. 110*C.) The speed of the flame front is the greatest and ignition of common combustibles are less likely
196
Which is NOT a correct statement
p. 106*C.) Deflagrations produce the greatest amount of heat
197
What occurs that can limit the amount of damage seen from an explosion
p. 116*C.) Ventilation
198
In which of the following do the most violent BLEVEsOccur
p. 108*A.) Liquefied compressed gases
199
What is considered the most important factor in determining the violence of a gas/vapor explosion
p. 109*C.) Fuel-to-air ratio in the compartment
200
What describes how rapidly the heat of the explosion is combusting available fuel and generating the flame front
p. 113*D.) Burning velocity
201
What is attached first to the foundation when a platform-frame building is being constructed
p. 144*D.) Wood sill
202
What is the ability of a structural assembly to maintain its load-bearing capacity and structural integrity under fire conditions
p. 124*A.) Fire resistance
203
What would most likely need to happen for the fuel-gas product to ignite in the piping system
p. 159*C.) Leak from the system
204
What can the fire investigator conclude when the electrical safety devices operated at a fire scene
p. 206*B.) An electrical event may have occurred
205
What is used to keep most automatic fire sprinkler systems Closed
p. 164*A.) Fusible links
206
In which location are process alarms often found
p. 170*C.) Industrial
207
Which is NOT a condition that must be present to show that an electrical incident to be the competent source of ignition for a particular fire
p. 204*B.) The electrical system was deenergized after the time of the fire
208
Which material has a lower resistance which makes it a good conductor of electricity
p. 184*A.) Copper
209
What color is the neutral conductor located at the box
p. 200*C.) White
210
What is the type of fuse the fire investigator will encounter where up to 30 amperes is required
p. 198*D.) Plug
211
Which measurements are used to calculate power
p. 186*D.) Voltage and Current
212
In which type of circuit will the failure of one light result in the other light not working
p. 181*C.) Series
213
Where can the investigator find additional information after an alarm has activated
p. 169*B.) Alarm panel
214
What is the main function of a fire pump
p. 166*A.) Increase water pressure
215
In which electrical circuit does the current move through the circuit in one direction
p. 180*D.) Direct current
216
What size AWG copper cable would be used with the 20-ampere circuit found in most homes
p. 187*C.) No. 12
217
Where is the grounding rod located that is used as a backup ground for the panelboard
p. 200*A.) Near the service entrance
218
Which NFPA standard covers the National Electricity Code
p. 177*A.) NFPA 70
219
At what point is the operating pressure in the fuel-gas system regulated
p. 160*B.) Before entering a structure
220
Approximately what percent of fires are controlled or extinguished by automatic fire sprinkler systems
*A.) 94 percent
221
How long will it take a typical 20-amphere circuit breaker to trip with a current of 30 amperes
p. 200*C.) 15 minutes
222
Where does the initiating device send an alarm to in the fire detection system
p. 167*B.) Fire alarm control panel
223
What leads from the overcurrent protection device in the circuit breaker panel to service the rooms and equipment in a building
p. 194*C.) Branch circuits
224
What unit of measurement is used to determine the resistance in the circuit
p. 183*D.) Ohms
225
What will determine if the voltage in the secondary coil within a transformer is higher or lower than the voltage in the primary coil
p. 189*A.) Ratio of windings in the primary and secondary coils
226
What are small solid particles that are produced when a short circuit occurs between metal objects that were normally insulated from each other
p. 205*B.) Sparks
227
What material is used to construct the pipes in piping systems
*D.) Metal
228
What is the minimum number of conductors that will lead from the power company's lines to the building in a service in newer buildings
p. 192*B.) Thre
229
What will generally be found providing overcurrent protection in newer residential buildings
p. 198*C.) Circuit breakers
230
Which energy-production system is constructed from combustible materials
p. 158*A.) Cooling tower
231
What is an older method of storing video surveillance Recordings
p. 170*B.) VHS
232
How many cycles per second does the AC power used in the North America have
p. 188*B.) 60
233
At approximately how many amps does the Class A GFCI Respond
p. 201*C.) 005 amps
234
What does the ampacity of the service determine
p. 192*B.) Size of the conductor
235
What is used to determine the American Wire Gauge
p. 183*B.) Diameter of the wire
236
What formula is used to calculate voltage
p. 184*C.) Voltage = Current X Resistance
237
What are the most common circuits that investigators will Encounter
p. 181*B.) Parallel
238
At what point within the cycle of the coil within a generator does the maximum voltage of the opposite polarity occur
p. 188*B.) 270 degrees
239
What is the movement of charge in a conductor
p. 178*C.) Electric current
240
What formula is used to calculate current
p. 185*A.) Current = Voltage / Resistance
241
Which type of building system is the boiler
p. 157-158*B.) Energy production
242
What size aluminum conductors are used in most modern service connections to residential properties
p. 192*D.) No. 2
243
Where can the investigator find product standards established by the National Electrical Code
p. 177*C.) NFPA 70 Part 2
244
What should the investigator avoid pertaining to building services
*B.) Operation
245
What is normally the capacity of the plug cap in the service for mobile homes
p. 193*C.) 50 amperes
246
What does the smoke-control system change that pertains to the fire investigation
p. 164*C.) Size of fire patterns
247
Which NFPA standard regulates the design and installation of electrical systems
p. 160*B.) NFPA 70
248
Up to what percent is it estimated that the installation of automatic fire sprinkler systems in one- and two-family dwellings can reduce fire deaths
p. 164*A.) 82 percent
249
What are negatively charged particles that revolve around the nucleus of atoms
p. 178*B.) Electrons
250
What occurs when electricity flows across a gap in a manner that was not intended
p. 204*A.) Electrical arc
251
What is an unintended path of current flow between a conductor and the earth
p. 201*A.) Ground fault
252
Where does the heat to ignite combustibles often come from in the transportation and conveyance system
p. 162*A.) Electrical components of the system
253
Which NFPA code should be referenced for requirements for elevators which will be used as part of the egress system for a building
p. 162*D.) NFPA 101
254
How is electrical pressure expressed
p. 178*C.) Volts
255
What is the electrical system equivalent to the valve in the water system
p. 179*D.) Switch
256
What is designed to provide a means to rapidly deploy fire hoses on all floors of a multistory building
p. 166*C.) Standpipe system
257
Where does electricity tend to travel
p. 200*D.) To the ground
258
How is an electrical system normally deenergized in a residential building
p. 202*B.) Remove the meter
259
What are devices specifically used when a connection is made with aluminum wires marked with currently
p. 197*B.) AL/CU
260
How many volts will there be between the insulated conductors of the service to a residential property
p. 192*A.) 240 volts
261
How is voltage within a circuit measured
p. 183*B.) Voltmeter is placed parallel to the circuit
262
What may help the investigator in determining the origin of the fire or initial incident that caused the fire
p. 169*C.) Alarm activation sequence
263
What is used to operate a circuit breaker in response to a short circuit
p. 199*D.) Magnet
264
What level of overcurrent protection will be present for a 15 ampere branch circuit
p. 196*A.) 15 ampere
265
Who should be able to access any entrance at the facility when specialize-access entry systems are in place
p. 171*C.) Security personnel
266
What is used to help prevent the electrical system from becoming an ignition source
p. 197*C.) Overcurrent protection
267
What can be installed within the ductwork of an environmental system that prevents smoke from traveling throughout a building
p. 159*C.) Smoke damper
268
Which NFPA standard will assist the investigator in understanding of codes that regulate chimneys, fireplaces, vents, and solid fuel-burning appliances
p. 162*A.) NFPA 211
269
What is a low-resistance path between conductors that allows a high current flow
p. 199*C.) Short circuit
270
What is failure most often attributed to with any water-based fire-suppression system
p. 165*B.) Human actions
271
What is used to alert occupants to the unlawful entry to aFacility
p. 169*A.) Monitoring system
272
What material is the core made from which coils are wrapped around in the transformer
p. 189*A.) Iron
273
What is produced by resistance in the electrical system
p. 180*A.) Heat
274
Where must any splice in a wire or connection to a device be made under Section 315 if the NEC
p. 197*B.) Electrical box
275
What are 40 or 50 ampere circuits permitted for in a Dwelling
p. 194*A.) Fixed cooking appliances
276
What is the minimum number of wires found in Romex wiring
p. 196*C.) Two
277
Where does the environmental system obtain the make-up air
p. 159*D.) Exterior of the building
278
Which is NOT a correct statement about the usage of an Ohmmeter
p. 202-203A.) Fire coated contacts on switches may measure as closed even if they are open*B.) It can occasionally be used on an energized circuit
279
What should be used to protect penetrations in walls and floors for transportation and conveyance systems
p. 161*A.) Fire dampers
280
What would the fire investigator add together to determine the total load on a circuit
p. 187*C.) Wattages
281
What is the electrical force that causes the flow of electricity called
p. 178*B.) Voltage
282
What commonly occurs when an electrical source is insulated to the point that the heat generated from the electricity cannot be dissipated
p. 206*D.) Resistance heating
283
What happens to the bimetallic strip that leads to tripping the circuit
p. 199*C.) Bends
284
What is defined as the amount of energy delivered over a period of time
p. 186*B.) Power
285
Which is one of the most commonly used conductors in Wiring
p. 178*D.) Copper
286
What is the primary reasons that the resistance in long transmission lines occurs
p. 189*D.) Energy being converted to heat
287
Which is a correct statement about transformers
p. 191*C.) The power into and out of a transformer is the same
288
What is the maximum that NFPA 921 recommends the container holding solid debris as ignitable-liquid evidence be filled
p. 280*C.) Two-thirds
289
Why should wet paper products be air-dried before packaging if they are not suspected of containing ignitable-liquid evidence
p. 275*C.) Prevent mildew
290
Why is glass at the scene be marked in place during evidence collection
p. 272*A.) Prevent it from being stepped on
291
Which is considered to be the key component of the documentation process
p. 246*D.) Photographs
292
What is essential for providing additional lighting for fire scene photographs
p. 255*D.) Electronic flash
293
With whom does the occupant have a legal obligation to cooperate during an investigation under a contractual entry
p. 223*D.) Insurer
294
In which of the following should adhesive tape be packaged when collecting it from the scene
p. 282*B.) Paper bag
295
In what type of containers should all materials collected as ignitable-liquid evidence be packaged
p. 279*A.) Airtight
296
What should the investigator do when the area of origin is being shifted through and reconstructed
p. 248*D.) Photograph each step
297
Which cannot be determined by laboratory analysis of Cigarettes
p. 276*A.) If the cigarette originated from a specific pack
298
What should be used to develop the hypothesis during a fire Investigation
p. 216*D.) Data collected
299
What size print should any DSLR camera being used by the investigator be able to print in high quality
p. 248*D.) 8 X 10-inch
300
How many tags should be placed on each wire when collecting it for evidence
p. 277*B.) Two
301
What is the best tool to use when reducing lens vibration
p. 253*C.) Tripod
302
In which NFPA standard can the definition used for physical evidence be found
p. 264*C.) NFPA 921
303
DSLR cameras starting with what megapixel rating will be able to produce a quality 8 X 10-inch photo
p. 250*D.) 8
304
Where should the investigator begin taking photographs when documenting a fire scene
p. 247*C.) Outside of the fire building
305
What is the primary objective for securing the scene
p. 229*D.) Protect evidence
306
What refers to evidence that has been destroyed or otherwise not preserved by someone who has responsibility for the evidence
p. 231*B.) Spoliation
307
Which is NOT a correct statement regarding warrants
p. 222*B.) Investigators entering subsequent to a fire can stay as long as necessary to determine the cause and origin of the fire
308
Approximately what amount of time should the calcium carbonate be allowed to sit when absorbing ignitable-liquid evidence from concrete
p. 280*B.) 30 minutes
309
Approximately how many high-quality images can a 1-GB memory card hold
p. 258*A.) 200-250
310
What is done that will help prevent contamination of Evidence
p. 230*B.) Restrict access
311
What can be used to depict the damaged or affected areas when an explosion or hazardous materials spill has occurred
p. 244*B.) Map
312
Which NFPA standard requires that investigators conduct investigations using the scientific method
p. 215*D.) NFPA 1033
313
What can be used when completing a sketch that will allow the investigator to draw the area to scale
p. 243*C.) Grid paper
314
What should be done with potential evidence before a detailed examination when an investigation is considered to be criminal
p. 234*D.) Mark it
315
What controls the amount of time the sensor is exposed to light when using a digital camera
p. 251*B.) Shutter
316
What must be done in order to be able to successfully be able to use high-quality equipment to generate drawings for the investigative report
p. 246*C.) Collect data
317
What focal length range is best suited for the fire Investigator
p. 253*B.) 28 mm to 105 mm
318
What will determine which physical evidence is collected at the fire scene
p. 265*A.) The relationship to the incident
319
Under which condition do investigators most commonly enter the fire scene
p. 219*A.) Exigent circumstances
320
Approximately what distance down should the investigator dig when collecting soil as ignitable-liquid evidence
p. 280*C.) 6-8 inches (150 to 200 mm)
321
What type of material should be used to package glass fragments being collected as evidence
p. 273*A.) Cotton
322
What must be obtained once an investigator has probable cause that a crime has been committed and additional entries into the scene are required
p. 222*B.) Criminal search warrant
323
What would need to happen if entries made concerning investigations made with an administrative warrant if evidence of a crime is found
p. 222*C.) Temporarily halted
324
How much of the concrete should be chipped and added to the container with the calcium carbonate when collecting ignitable-liquid evidence
p. 280*B.) 1/4-inch (13 mm) layer
325
What stipulation did the U.S. Supreme Court rule on in Michigan v. Tyler about collection of evidence of arson
p. 220*C.) Firefighters may collect evidence that is in plain view
326
During the investigation, what should be the next step if the origin and cause is not determined
p. 214*D.) Continue the investigation
327
What should be listed as the cause of the fire when multiple hypotheses are determined to be equally possible
p. 216*B.) List as undetermined
328
What should be used to cover the investigator's hands while collecting evidence
p. 270*B.) Unused latex gloves
329
With which of the following should the fire investigator work closely with when collecting evidence from victims
p. 283*B.) Law enforcement
330
Which is NOT a correct statement about establishing a Perimeter
p. 233*C.) Make the perimeter the minimum size necessary to preventOver use of present resources
331
What can prevent the fire investigator from gaining entry with exigent circumstances
p. 220*D.) Leaving the scene
332
What can be done to help reduce light reflection from the Flash
p. 256*C.) Remove flash from the camera and hold it at an angle
333
Which is the most common type of documentation that investigators use
p. 240*C.) Field notes
334
What should be done with charred materials to prevent additional deterioration during the collection and packaging process
p. 275*B.) Place on a sheet of cardboard
335
What should be used to ensure a photograph with more Detail
p. 254*C.) Greater depth of field
336
How should wet wood items that will not be used as ignitable-liquid evidence be handled
p. 275*C.) Air-dry before packaging
337
What should be used to pad small electrical components when collected for evidence
p. 278*A.) Paper
338
What would need to be done if it is discovered that outside research does not closely resemble the fire conditions during an investigation
p. 217*A.) Retest the hypothesis
339
Where is the aperture opening located
p. 251*C.) Lens
340
Which of the following should be done first when collecting electrical system evidence
p. 277*D.) Document it in place
341
Which is considered the best application of video camera documentation during the fire investigation
p. 259*A.) Depiction of any event that takes place over a reasonable period of time where sequencing is important
342
Which type of stopper works well for sealing off spouts or fill holes in containers found at the incident scene when being collected for ignitable-fuel evidence
p. 281*B.) Cork
343
Approximately what portion of the distance into the overall setting should the investigator place the subject into the area that is in focus
p. 254*B.) One-third
344
What does not happen when consent is withdrawn from the owner/occupant during an investigation
p. 221*B.) Investigator must leave the premises
345
Which is the best ISO setting choice for most fire investigators for interior photographs of the fire scene
p. 255*D.) High speed
346
Where should the identification number be recorded for each piece of evidence collected
p. 267*C.) Investigation notes and scene diagram
347
What is essential in any investigation because the scene is most often altered or destroyed during or after the investigation
p. 239*A.) Good documentation
348
What is the minimum resolution that investigators should print any photographs
p. 250*B.) 300 ppi
349
How many times the distance of the farthest piece of debris should the perimeter for explosions be established
p. 232*D.) 5
350
What is the first step that should be taken when collecting glass evidence to determine the direction of force that resulted in the breakage of the window glass
p. 272*D.) Photograph all remaining glass in the broken window
351
Which is NOT a piece of information that should be collected anytime the custody of a piece of evidence changes
p. 267*B.) Location that the item was found on scene and who located It
352
What is required in most jurisdictions in order to obtain entry after the fire department has left the scene
p. 221*B.) Administrative warrant
353
What is the next thing to act upon the image after light passes through the lens of the digital camera
p. 251*A.) Prism
354
What is moved when photographing a large area under low-light conditions
p. 256*C.) Flash
355
Where can most manual settings for DSLR cameras be controlled
p. 250*B.) Dial on the back
356
Who is initially responsible for the security of the Scene
p. 229*B.) Fire-suppression personnel
357
What encompasses anything that can taint physical Evidence
p. 231*B.) Contamination
358
When should the sketch of the fire scene be completed
p. 241*A.) While on the scene
359
What should be used to clean the tools during the investigation that are used to collect evidence at the incident scene
p. 270*A.) Dishwashing detergent
360
What can the investigator do if fire suppression activities are still under way upon arrival
p. 217*C.) Interview witnesses
361
Which should NOT be included in the investigator's field Notes
p. 241*C.) All personal comments or opinions
362
What must be present to create a secure investigation Scene
p. 229*D.) Perimeter
363
What should be done before any photo is edited
p. 258*D.) Preserve a copy of the original
364
How should remaining fragments of a larger item be packaged when the document is in numerous pieces
p. 276*A.) With the larger item
365
Where is the preferred location to store fire investigation photographs
p. 258*A.) CD-ROM
366
What determines the timing of the witness interviews
p. 218*B.) Investigator
367
Where should the perimeter be located at a building fire
p. 232*C.) Beyond farthest piece of evidence found outside
368
What determines the packaging technique for glass Evidence
p. 273*D.) Size of the glass fragment
369
What is a key consideration when developing sketches during an investigation
p. 243*D.) Keep them as uncluttered as possible
370
What setting is changed when bracketing in difficult lighting situations
p. 252*A.) Aperture size
371
What is the first step in the scientific method when it is applied to a fire investigation
p. 215*B.) Recognize the need
372
In what form is most evidence collected at the scene
p. 265*C.) Artifact
373
When in water, where will the investigator tend to find hydrocarbon-based ignitable liquids
p. 279*B.) On the surface
374
Which ISO setting is good for use outside with natural Lighting
p. 255*A.) Slow speed
375
What is the first step taken once the right of entry as been obtained during the fire investigation
p. 214*C.) Safety assessment
376
Which material is most commonly used to transport materials collected as ignitable-liquid evidence
p. 279*B.) Metal
377
Which may be used to depict the floor plan of a fire building
*C.) Drawing
378
What is considered to be normal focal length lens
p. 252*B.) 50 to 55 mm
379
What is NOT necessary to do when it is necessary to limit the number of personnel entering a scene if the investigation is considered to be criminal
p. 233-234*B.) Send firefighters into the scene in pairs
380
What should be used to show how an item was found and its relationship to other items during an investigation
p. 240*A.) Photographs
381
Which is NOT recommended when packaging cigarettes or cigarette butts at the incident scene
p. 276*B.) Use a plastic bag as a container
382
At what level is something considered to be probable
p. 216*B.) 1 percent
383
Which is NOT a correct statement about collecting appliances and equipment from the incident scene
p. 278*B.) All controls should be operated to check for condition
384
What record should be kept for photographs
p. 247*A.) Time and date
385
Which material can be used to package small glass fragments that are collected at the scene
p. 273*A.) Glass
386
Where can forms suitable for photocopying to assist in the collection of investigative information be found
p. 241*A.) NFPA 921
387
Which is NOT a correct statement about fire patterns
p. 326-327*B.) Smooth surfaces will be more heavily damaged than roughSurfaces
388
Who is responsible for meter booting
p. 307*A.) Utility company
389
What is the minimum distance beyond the most distant piece of evidence found at an explosion scene that the secure area should be placed
p. 302*A.) Fifty percent
390
How is the heat energy transferred in the gas layer when hot gases flow over walls and open doors
p. 333*B.) Conduction
391
What does a clean burn pattern indicate
p. 336*C.) Area where the surface was exposed to fire
392
Which would found on a conductor be indicative of an arc
p. 348*D.) Melted metal
393
What is the width of the V a function of with plume-generated fire patterns
p. 330*D.) Size of the flame zone
394
What should the fire investigator pay particular attention to when choosing the debris removal location
p. 357*D.) Origin area indicators
395
Where does the exterior of a scene begin for theInvestigator
p. 305*A.) Perimeter of the scene
396
What is the key similarity between investigations at a fire scene and an explosion scene
p. 309*B.) Process used to examine both scenes
397
Where will damage be seen when air flows into the compartment from under the door
p. 334*C.) Upper portion of the door on the side exposed to the fire
398
What can be done to capture the arcing for examination that is a less destructive method
p. 350*A.) X-ray
399
Which part of the circular-shaped fire pattern should show greater damage from the fire
p. 332*B.) Center
400
Which is NOT deemed a necessary piece of information that should be included in the statement given by the interviewee
p. 295*A.) Method used to record the statement
401
Which is NOT something the fire investigator will use to determine the proper areas to first examine and excavate
p. 356*B.) Analysis of adjacent structures
402
How should arrows be used on vector diagrams
p. 345*B.) Area of most to least damage
403
What exterior burn pattern will often be the result of ventilation from the interior
p. 325*C.) V-patterns
404
Which type of heat transfer is blocked when heat shadowingOccurs
p. 341*A.) Radiant—What is the simplest and most commonly used method to document an interview? p. 295*D.) Note taking
405
After what date has multiagency intelligence information sharing become the norm
p. 303*C.) 9/11/2001
406
When should notes be taken when a recording device is being used during an interview
p. 294*A.) At the conclusion of the interview
407
Which Constitutional Amendment guarantees that no person accused of a criminal offense can be compelled to be a witness against himself
p. 290*A.) Fifth
408
What causes fuel to be suspended in the upper layer of the compartment in the form of hot gases during ventilation-limited conditions
p. 335*A.) Incomplete combustion
409
Which is a sign of a movement pattern
p. 344*D.) Greater char on one side
410
During debris removal, when should the investigator take a photograph of each item
p. 359*D.) In place as it was found
411
Often what is the most specific that the investigator is able designate the origin of a deflagration
p. 316*B.) Room it occurred
412
Which is NOT correct about evidence and data collection
p. 304*A.) Once evidence shows the fire was incendiary, data collection can stop
413
What will determining the fuel involved in the explosion help to later determine
p. 310*A.) Area of origin
414
What determines the height of the inverted V caused by the flame in an hourglass fire pattern
p. 330*B.) Actual flame height the fuel package generates
415
What should be done to encourage the interviewee to possibly give more information than was originally asked for
p. 294*A.) Ask open-ended questions
416
What may wicking look like along the edges of the major pattern when a trailer is present
p. 338*A.) Fingers
417
What pattern is seen when a pool of liquid is ignited on a floor surface
p. 338*B.) Doughnut-shaped
418
What happens when fire gases flow through structural openings such as doors and windows
p. 335*B.) Velocity is increased
419
What happens to the heat transfer where the plume makes contact with any building or contents' surfaces
p. 324*B.) Heat transferred is greater and lasts for a longer time
420
What is the most useful place to draw the vector diagram
p. 345*B.) Diagram of the prefire condition of the fire room or area
421
Which is considered too often be the most difficult aspect of an explosion investigation
p. 317*D.) Ignition-source identification
422
Which does not contribute to BLEVEs but does cause high-order damage
p. 311*A.) Explosives
423
Which is one of the most common mistakes that an interviewer will make
p. 294*B.) Not allowing the interviewee to tell their story
424
Which must be done first
p. 324*D.) Determine area of origin
425
How far apart do personnel space themselves during a line Search
p. 314*A.) Arms length apart
426
What must be done before scene reconstruction can take Place
p. 360*C.) Debris removal
427
What is determined about the fire pattern in relation to the distance of the burning fuel package and the resulting plume from the vertical surface and the height of the ceiling
p. 328*D.) Shape of the pattern
428
What about the blast pressure in an explosion does the force-vector analysis show
p. 315*C.) Direction
429
Where does the upper layer of the plume expand as the compartment transitions through flashover and into full-room involvement
p. 324-325*A.) Towards the floor
430
What do the layers of debris represent to the fire Investigator
p. 358*B.) Fire's timeline
431
What is the main difference between the U-shaped fire pattern and the V-shaped fire pattern
p. 330*B.) U-shaped appears higher on vertical surfaces
432
How many fuel packages are responsible for a fire pattern
p. 342*A.) One
433
Where do circular-shaped fire patterns appear
p. 332*D.) Undersides of horizontal surfaces
434
What should the fire investigator attempt to correlate the fire patterns found with when forming a hypothesis
p. 344*A.) Fuel packages
435
What has been shown to be the primary factor behind fire-pattern creation
p. 324*D.) Amount of radiant heat flux on a material's surface
436
Where should the char gauge be inserted when measuring char depth
p. 346*A.) Center of the char blister
437
Which fuels tend to result in deflagrations and can contribute to BLEVEs
p. 310*B.) Heavier-than-air-gases
438
Which is NOT a correct statement about excavation and debris removal
p. 357*D.) Decisions made at the onset will need to remain the same throughout the process
439
What type of burning should be investigated as an exterior Fire
p. 326*D.) Low burning
440
What part of the structural components such as wood studs or trim are burned away that result in pointer or arrow patterns
p. 336*D.) Sharp edges
441
Which is NOT a key objective of fire scene reconstruction
p. 361*C.) Identify and document fire speed and intensity
442
How many personnel should be assigned to ensure that any heavy equipment operators preserve the integrity of the structure and the scene and do not increase the on-scene hazards
p. 358*A.) One
443
What part of the V-shaped fire pattern points to where the flame was coming from as the pattern was made
p. 329*D.) Bottom of the V
444
What can force trapped, unburned products of combustion outside the compartment through open doors
p. 343*C.) Ventilation
445
Which is NOT considered to be a key objective of debris Removal
p. 356*C.) Determine the person responsible
446
What should be done first when the investigator moves to the interior examination
p. 308*A.) Perform a walkthrough
447
What should be done with witnesses once they have been identified at the scene
p. 291*A.) Separate them from others
448
What must be given to a person being interviewed once they are determined to be a possible suspect for their statements to be admissible in court in the United States
p. 290*B.) Miranda warning
449
Which should the interviewer NOT do when conducting theInterview
p. 294*A.) Provide information about the incident in question
450
What should be the first step in an interview
p. 292*B.) Introductions
451
What is used to survey and map arcs at the scene
p. 347*A.) Damage on conductors
452
What is very useful for identifying small pieces of evidence in the immediate origin area when the area is badly damaged
p. 360*A.) Small sieves
453
What should the investigator do if a piece of evidence cannot be protected in its current location
p. 306*D.) Document and collect the material
454
What is used to categorize plume-generated fire patterns
p. 328*C.) Geometrical shapes
455
What orientation are the lines created by hot-gas-layer fire patterns
p. 334*D.) Horizontal
456
Which is associated with very powerful, seated explosions which can shake and damage adjacent structures
p. 312*C.) Seismic energy
457
What must be done first when the investigator is planning an interview
p. 291*B.) Establish the goals
458
How many people should be interviewed at once when multiple witnesses were present at an incident
p. 292*C.) One
459
Who is responsible for determining the level of detail that is required for the interior examination
p. 308*C.) Investigator
460
Where will explosive device reconstruction most likely take place
p. 314*A.) Forensic lab
461
Which event is much more likely during the explosion scene investigation than a fire scene investigation
p. 309*A.) Building collapse
462
Which is NOT a correct statement about fire-pattern analysis
*B.) The area of greatest damage is always the area of origin
463
What is the first thing the investigator should do once an arcing site is located
p. 348*A.) Mark it
464
Where does the fire occur that results in a V-shaped fire Pattern
p. 328*C.) Next to a vertical surface
465
When a ceiling jet is formed by the intersection of the plume and a ceiling, where is the greater heat transferred first
p. 324*A.) Ceiling
466
What does the initial explosion show the most evidence of
p. 316*D.) Ventilation
467
What can the depth of char indicate to the investigator
p. 345*D.) Which portions of a surface burned longer than others
468
In which fire pattern is the compartment usually heavily damaged from ceiling to floor levels
p. 336*B.) Full-room involvement
469
Which piece of information can the interviewer NOT require when identifying the interviewee
p. 293*B.) Social security number
470
Which is NOT a correct statement about dust explosions
p. 316*B.) Secondary explosions are the exception
471
Which is NOT a correct statement
p. 342*C.) A large fire pattern will point to the area of origin
472
Which would not likely be seen on noncombustible surfaces
p. 327*C.) Charring
473
Which statement about interviews is NOT correct
p. 289*B.) Interviews should be delayed until there is sufficient time to conduct them
474
What is the next step taken after the safety assessment at an explosion scene
p. 310*B.) Determine which damage is from the explosion and which is from the fire
475
What type of fire pattern will be created when the fire has a low heat release rate and is near a vertical surface
p. 332*C.) Inverted-cone
476
Which patterns are the result of fire burning downward through the floor surface above the joist
p. 339*D.) Saddle burns
477
Which is responsible for the majority of damage in an Explosion
p. 312*D.) Blast-pressure-front positive phase
478
Which is an important type of evidence for determining pre-explosion or post-explosion damage
p. 313*B.) Window glass
479
What pieces of information should the investigator collect about interior contents that are found during the exterior examination of the scene
p. 306*D.) Who removed them and where they were located
480
What happens to combustible surfaces as the hot-gas-layer passes over them
p. 333*D.) Charred
481
What is always present when a backdraft occurs
p. 311*A.) Pre-explosion fires
482
What type of fire pattern is often seen with leaks in natural gas pipes occur below the level of a floor
p. 333*B.) Inverted-cone
483
What does the look of the lines of demarcation depend upon when an irregular pattern is created on the floor
p. 337*D.) Material on which the pattern is formed
484
Which is most likely seen when the overpressure level is between 0 and 0 psi (9 kPa and 8 kPa)
p. 312*B.) Lightweight construction will suffer great damage
485
What should be done when a leak is not readily apparent during the fuel-source analysis after a gas/vapor explosion
p. 317*A.) Leak test the entire gas piping system
486
Which is NOT an item that is most susceptible to ignition from static
p. 381*D.) Solid fuels with a low surface-to-mass ratio
487
Which type of witness answers questions about what they saw during a criminal trial
p. 412*D.) Fact
488
Where can using the wrong fuel in solid fuel-powered equipment most often cause the appliance to fail due to overheating
p. 372*A.) At the floor
489
In general what must occur for a solid to ignite
p. 382*A.) Turned into a vapor
490
In general, what is done with witness interviews when completing the fire investigation report
p. 408*C.) Summarize the statements
491
Which is most important when identifying the material that was first ignited when examining the fuel's orientation
p. 382*C.) Vertical versus horizontal
492
Which method of distribution should be avoided when a media release is being sent out
p. 405*C.) Mail
493
To whom does Rule 26 most frequently apply to during civil Proceedings
p. 410*C.) Private investigators
494
What type of search warrants are fire investigators allowed to use for routine fire investigations
p. 427*D.) Administrative
495
What should the investigator do if there is false or misleading information in the reporters' questions
p. 403*B.) Politely correct it
496
What is the means by which the plaintiff obtains information from the opposing party to prove its allegation
p. 409*C.) Discovery
497
Which is NOT a correct representation of a question the investigator would answer that would assist in identifying the suspect in an incendiary fire
p. 391-392*D.) Is there an abundance of personal items?
498
What will the investigator need to rely on when aluminum wiring is present to determine the prefire connection quality
p. 375*A.) Damage patterns to screw heads
499
Which is NOT a correct statement about reports written by fire investigators who are employed by a public agency
p. 405*B.) The reports are always treated as a sealed record
500
Which is NOT a factor in the ignition of a material by a lit cigarette
p. 378*A.) Length of the cigarette
