Fire Investigator

Question 1

term

Answer 1

definition

Question 2

Who should be responsible for monitoring the perimeter when a threat from suspects or individuals associated with the fire scene exists

Answer 2

p. 41*B.) Law enforcement

Question 3

What is used to ensure that multiple priorities from multiple agencies are considered during the resolution of an incident

Answer 3

p. 25*A.) Unified command structure

Question 4

Which NFPA standard should be consulted for operations dealing with fuel gas

Answer 4

p. 44*C.) NFPA 54

Question 5

Which gas levels are more practical to be monitored when conducting a fire investigation

Answer 5

p. 32*A.) Oxygen and carbon monoxide

Question 6

What should mark the end of the site safety assessment

Answer 6

p. 27*C.) Investigation conclusion

Question 7

How long will the organic vapor/acid gas cartridge beEffective

Answer 7

p. 33*B.) 8-10 hours

Question 8

Which NFPA standard is used to establish the minimum job performance requirements of the fire investigator

Answer 8

*C.) NFPA 1033

Question 9

What is usually best to utilize when interior lighting is needed during an investigation

Answer 9

p. 40*A.) Portable lighting

Question 10

Which two Constitutional Amendments apply to due process

Answer 10

p. 13*A.) Fifth and Fourteenth

Question 11

1 Where should any generators used to power portable lighting be operated

Answer 11

p. 41*D.) Exterior of the building

Question 12

When should the atmosphere be tested when an investigation must take place

Answer 12

p. 29*C.) Before entry

Question 13

What color on the hazardous material placard indicates the flammability of the product being transported

Answer 13

p. 35*C.) Red

Question 14

1 What is the primary objective of a site safety assessment

Answer 14

p. 25*B.) Minimize the level of risk to personnel

Question 15

What should be used to determine the location of the perimeter that is set at an explosion scene

Answer 15

p. 41*A.) Farthest piece of debris found

Question 16

Which NFPA standard lists the standard equipment and tool list for a fire investigator

Answer 16

p. 15*D.) NFPA 1033

Question 17

What color cord is best when portable lighting is being used during an investigation

Answer 17

p. 40*D.) Orange

Question 18

What number of investigators should be used when conducting witness and suspect interviews

Answer 18

p. 42*D.) Two

Question 19

1 When should a fire investigator’s tools be cleaned

Answer 19

p. 15*D.) After each use

Question 20

What is useful to wear for the highest level of hand protection during an inspection

Answer 20

p. 29*A.) Latex gloves under leather gloves

Question 21

2 Which is NOT a correct guideline for working safely near Biohazards

Answer 21

p. 36*A.) Decontaminate all equipment after use at the station

Question 22

What should be done when a floor integrity issue is discovered at the scene when an investigation is needed

Answer 22

p. 26*D.) Mark the location

Question 23

What body part is NOT included in the list of minimum body parts that must be protected during an inspection

Answer 23

p. 27*C.) Chest

Question 24

Against which type of radiation does structural firefighter bunker gear and chemical protective suits provide no barrier

Answer 24

p. 30*D.) Gamma

Question 25

What should the investigator do when a family pet is encountered during the course of the investigation

Answer 25

p. 42*A.) Wait for it to be subdued before entering the area

Question 26

What is the first place the fire investigator should go when arriving at an incident scene

Answer 26

p. 25*A.) Command post

Question 27

Who should initially survey the hazardous material incident scene and determine it is safe for the investigation to proceed

Answer 27

p. 33*A.) Incident commander

Question 28

Which type of radiation generally bounces off of clothing

Answer 28

p. 30*C.) Alpha

Question 29

Where can the investigator go to eat and rest during the Operation

Answer 29

p. 33*A.) Rehab facility

Question 30

Which has little to do with private-sector investigations

Answer 30

p. 14-15*B.) Due process clauses

Question 31

What is the formal review by a third-party of the policies, procedures, and processes used by an organization providing certification

Answer 31

p. 12*C.) Accreditation

Question 32

Who may investigators work with due to their expertise on construction and potential hazards on the fireground

Answer 32

p. 9*A.) Building department

Question 33

Who is responsible for scene safety if the fire investigator is on the scene alone

Answer 33

p. 26*B.) Investigator

Question 34

Which would be seen on the yellow portion of the hazardous material placard to indicate the product is normally stable

Answer 34

p. 35*C.) 0

Question 35

What should be the potential collapse zone for walls and structurally damaged walls and/or chimneys

Answer 35

p. 38*D.)1.5 times the height of the object

Question 36

Whose primary function involves determining the cause of fires that occur within their jurisdiction

Answer 36

p. 8*C.) Fire investigator

Question 37

When should the fire investigator be inserted into the incident management system

Answer 37

p. 24*C.) Upon arrival at the scene

Question 38

For safety at the scene, what is the minimum number of fire investigators that are recommended

Answer 38

p. 38*A.) Two

Question 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

Answer 39

p. 30*D.) Decay

Question 40

What should be used to cordon off a cesspool or drainage ditch that will pose a health hazard

Answer 40

p. 45*D.) Scene tape

Question 41

What can be worn by the investigator to protect against cuts and abrasions

Answer 41

p. 28*D.) Bunker coat

Question 42

Which private resource can the fire investigator use as a source of information regarding distribution systems in the area

Answer 42

p. 11*B.) Utility companies

Question 43

Which is NOT a correct statement about investigation operations around electricity

Answer 43

p. 44*A.) Utilize rubber footwear as an insulator

Question 44

Which is NOT a normal function of arson task forces

Answer 44

p. 11*D.) Performing investigations

Question 45

With which of the following is it very important that the fire investigator maintain a relationship to assist in the investigation of fires

Answer 45

p. 9*D.) Insurance industry

Question 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

Answer 46

p. 38*D.) Two

Question 47

What determines the heat transfer rate between two bodies

Answer 47

p. 61*C.) Temperature differential

Question 48

Which fire class involves combustible metals

Answer 48

p. 77*B.) Class D

Question 49

In which of the following locations will the fire plume expand vertically with higher plume temperatures

Answer 49

*D.) Fire in corner and against a wall

Question 50

During the growth phase, what will indicate higher Temperatures

Answer 50

p. 82*D.) Increased pressure

Question 51

Which construction material acts as a heat sink during fire conditions

Answer 51

p. 93*D.) Masonry

Question 52

What is the violence of a backdraft dependent upon to some Degree

Answer 52

p. 88*D.) Confinement

Question 53

What must happen in order for a liquid to burn

Answer 53

p. 67*D.) It must vaporize

Question 54

Which is NOT a source of heat that commonly results in the ignition of a fuel

Answer 54

p. 59*D.) Sound

Question 55

Gases with a vapor density lower than what value will rise

Answer 55

p. 67*C.) 1.0

Question 56

What is the primary concern regarding the ability to ignite a solid fuel

Answer 56

p. 70*A.) Surface-to-mass ratio

Question 57

What is the temperature at which a liquid releases sufficient vapors to ignite, but not sustain, combustion

Answer 57

p. 67*D.) Flash point

Question 58

Which is the transmission of energy as an electromagneticWave

Answer 58

p. 63*A.) Radiation

Question 59

Which is considered to be the most commonly encountered toxic byproduct of incomplete combustion at structural fires

Answer 59

p. 55*D.) Carbon monoxide

Question 60

Which is NOT a correct statement about fuel geometry

Answer 60

p. 90-91*C.) Fires originating in upper levels will generally extend downward quickly

Question 61

Which type of heating is unintended resistance heating

Answer 61

p. 60*D.) Overcurrent

Question 62

Which can have a significant effect on the fire within a building

Answer 62

*A.) Wind

Question 63

Which is NOT a correct statement about radiated heat

Answer 63

p. 64*C.) Radiant heat is capable of travelling around corners but at a slower rate than in a straight line

Question 64

Which is NOT a correct statement about the six elements ofFlashover

Answer 64

p. 84-85*B.) Spreads full fire involvement within the compartment instantaneously

Question 65

Which result of combustion causes most fire deaths

Answer 65

p. 55*C.) Smoke

Question 66

Which is often the most readily available source of fuel in a compartment fire

Answer 66

p. 90*D.) Contents

Question 67

When trying to extinguish surface combustion, which is notEffective

Answer 67

p. 76*D.) Disrupt the chemical reaction

Question 68

At what rate do most chemical reactions increase with each18^F (10^C) increase in the temperature of the reactingMaterials

Answer 68

p. 60*A.) Double

Question 69

What is used to differentiate the different modes of Combustion

Answer 69

p. 53*D.) Location of the reaction

Question 70

During which fire stage may hot unburned fire gases likely flow from the compartment of origin into adjacent compartments

Answer 70

p. 86*B.) Fully developed

Question 71

Which is NOT a correct statement about ignition

Answer 71

*D.) The autoignition temperature of a substance is always lower than its piloted ignition temperature

Question 72

What acts as an asphyxiant by preventing the body from using oxygen at the cellular level

Answer 72

p. 55*A.) Hydrogen cyanide

Question 73

What mixes with hydrogen chloride to produce hydrochloricAcid

Answer 73

p. 56*B.) Water

Question 74

Which is one of the most fundamental characteristics that influences fire development

Answer 74

p. 90*A.) Mass

Question 75

What results in a complex mixture of combustion products in a structure fire

Answer 75

p. 55*D.) Incomplete combustion

Question 76

What happens as the plume of radiant heat reaches the ceiling during the incipient stage of a fire

Answer 76

p. 79*D.) Spread horizontally across the ceiling

Question 77

What is the transfer of heat energy from a fluid to a solid surface

Answer 77

p. 63*A.) Convection

Question 78

By what factor would doubling the temperature when dealing with radiant heat

Answer 78

p. 64*D.) Sixteen

Question 79

What is the most common source of heat in combustion Reactions

Answer 79

p. 60*A.) Chemical

Question 80

Which type of combustion is better explained with the fireTetrahedron

Answer 80

p. 54*C.) Flaming

Question 81

Which product of combustion is a colorless liquid with a petroleum-like odor

Answer 81

p. 56*B.) Benzene

Question 82

In which stage of pyrolysis can combustion occur and charcoal is formed by the burning process

Answer 82

p. 70*C.) Stage 3

Question 83

What is the primary oxidizing agent in most fires

Answer 83

p. 72*A.) Oxygen

Question 84

What is the oxygen concentration in our atmosphere

Answer 84

p. 52*A.) 21 percent

Question 85

Which fuel gas has the widest flammability range

Answer 85

p. 74*C.) Carbon monoxide

Question 86

With which method of heat transfer will the two objects touch each other

Answer 86

p. 62*D.) Conduction

Question 87

What determines the amount of heat a given material releases during combustion

Answer 87

p. 65*D.) Material’s chemical makeup

Question 88

From how many sides can a fire in a fuel package that is located in the corner

Answer 88

p. 80*D.) Two

Question 89

Which two have the most effect on fire investigations

Answer 89

p. 55*A.) Heat and smoke

Question 90

Which factor influences how heat is transferred in relation to the fire

Answer 90

p. 80*C.) Orientation

Question 91

What state must the reducing agent be in for flaming combustion to occur

Answer 91

p. 66*C.) Gas

Question 92

Which is NOT a correct statement about a compartment fire that enters the decay stage due to a lack of oxygen

Answer 92

p. 87*B.) The heat release rate will continue to climb

Question 93

What controls most fires that grow beyond the incipientStage

Answer 93

p. 85*C.) Ventilation

Question 94

What is the thermal or chemical decomposition of fuel because of heat

Answer 94

p. 59*D.) Pyrolysis

Question 95

During which fire stage will it begin to influence the environment within the compartment

Answer 95

p. 80*A.) Growth

Question 96

Which is NOT a correct statement

Answer 96

p. 68*C.) Liquids lighter than water are less challenging toExtinguish

Question 97

What type of energy is heat

Answer 97

p. 57*D.) Kinetic

Question 98

During which event will the fire gases at the ceiling level ignite

Answer 98

p. 84*C.) Rollover

Question 99

Changes in which of the following will most likely be the most significant factor in changing fire behavior within a compartment

Answer 99

p. 93*C.) Ventilation

Question 100

Which is the least conductive material

Answer 100

p. 62*D.) Wood

Question 101

Which has the highest peak heat release rate

Answer 101

p. 66*A.) Polyurethane sofa

Question 102

What is the point where the three elements of the fire triangle come together in sufficient quantities and concentrations so that fire results

Answer 102

p. 53C.) Ignition—Which is NOT a correct statement? p. 78D.) When sufficient oxygen is available, fire development is controlled by the configuration of the compartment

Question 103

Where is the stoichiometric ratio generally located for aFuel

Answer 103

p. 73*D.) Near the midpoint of the flammability range

Question 104

What is formed during saponification

Answer 104

p. 77*D.) Soapy film

Question 105

Which is commonly recognized as a backdraft indicator

Answer 105

*D.) Pulsing smoke movement

Question 106

What determines the layers that gases form into when thermal layering occurs

Answer 106

p. 82*C.) Temperature

Question 107

What type of change occurs when a substance changes from one type of matter into another

Answer 107

p. 52*B.) Chemical

Question 108

Where does the neutral pressure exist when thermal layering is occurring

Answer 108

p. 83*C.) Openings

Question 109

Which element is included in the fire tetrahedron but NOT the fire triangle

Answer 109

*D.) Chemical chain reaction

Question 110

At normal ambient temperatures, materials can ignite in oxygen concentrations as low as what value

Answer 110

p. 72*A.) 14 percent

Question 111

What results when the products of combustion are within the flammable range and they ignite when the fire is in the decay stage

Answer 111

p. 87*B.) Smoke explosion

Question 112

What is the process by which a fuel is changed chemically to flammable vapors and carbon due to the presence of sufficient heat

Answer 112

p. 69*B.) Pyrolysis

Question 113

What does the Halon extinguishing agent interfere with that will terminate the combustion reaction

Answer 113

p. 76*A.) Chemical reaction

Question 114

Which fire stage starts with ignition

Answer 114

p. 79*D.) Incipient

Question 115

Which is generated by friction or compression

Answer 115

p. 61*A.) Mechanical heat energy

Question 116

With which fire class is the primary extinguishing mechanism used cooling of the fuel

Answer 116

p. 76*A.) Class A

Question 117

In which occupancy will you find aluminum primarily in window and door frames as well as roof panels and siding

Answer 117

p. 131-132*A.) Residential

Question 118

Which type of membrane roofing is useful for buildings with curved roof surfaces

Answer 118

p. 143B.) Fluid-applied—Which roof covering is often applied to the structural members of the roof using no intermediate sheathing? p. 141C.) Wood shingles

Question 119

What is seen at the seat of an explosion when the blast occurs at or near ground level

Answer 119

p. 104*A.) Crater

Question 120

Which type of explosion results from an increase in pressure within a confined container

Answer 120

p. 100*D.) Mechanical

Question 121

In what pattern will an explosion project heat and pressure under ideal circumstances

Answer 121

p. 102*B.) Sphere

Question 122

Which is the most common type of mechanical explosion that investigators will encounter

Answer 122

p. 100*D.) BLEVE

Question 123

What element must be present to form a high explosive

Answer 123

p. 108*A.) High pressure

Question 124

What causes more damage during a detonation

Answer 124

p. 101*B.) Shock wave

Question 125

Which of the following sources of a chemical explosion will the investigator not often encounter

Answer 125

p. 101*D.) Solid

Question 126

What are the interior structural members completely or partially constructed from in a Type III building

Answer 126

p. 135*D.) Wood

Question 127

Where does the foundation transfer the structural load

Answer 127

p. 148*D.) Ground

Question 128

In how many directions is it possible for fire to spread when truss joists are used in floor construction

Answer 128

p. 148*D.) Four

Question 129

What is the main difference between a dust explosion and the gas/vapor explosion

Answer 129

p. 117*A.) Fuel source

Question 130

Which is a main factor that will determine the reaction of wood to fire conditions

Answer 130

p. 125*B.) Moisture content

Question 131

What is the upper range of pressure required to breakGlass

Answer 131

p. 133*A.) 0 psi (07 kPa)

Question 132

What happens to the burning velocity as the fuel is forced around an obstruction during an explosion

Answer 132

p. 114*B.) Increases

Question 133

What material has been used to completely replace castIron

Answer 133

p. 131*D.) Steel

Question 134

In which of the following locations will the investigatorNOT tend to encounter light weight construction

Answer 134

p. 146*A.) Cathedrals

Question 135

What is under pressure that can result in a BLEVE

Answer 135

p. 107*B.) Liquid

Question 136

Which is NOT a correct statement about fires involving roof membranes

Answer 136

p. 142*C.) Fire will spread slowly through the tar layer

Question 137

Where will propane tend to collect in a compartment

Answer 137

p. 111*C.) Near the floor

Question 138

What shape is used to construct trusses

Answer 138

p. 146A.) Triangle—What does the degree of fire resistance required of a wall or partition depend upon? p. 149C.) Its purpose

Question 139

What is the basic purpose of the roof

Answer 139

p. 139*C.) Protect the inside of the building from the outside

Question 140

What can affect the time it takes for fire-suppression and warning systems to be activated

Answer 140

p. 143*B.) Ceiling height

Question 141

What can lead to higher than expected interior temperatures during a fire in a log home

Answer 141

p. 138*D.) Dimensions of walls

Question 142

Which is NOT correct about the ignition source during anExplosion

Answer 142

p. 115*C.) Ignition source must be hotter than the auto ignition temperature of the fuel/air mixture

Question 143

What type of energy is the mechanical potential energy converted into during an explosion

Answer 143

p. 100*B.) Kinetic

Question 144

What are key to the explosive reaction

Answer 144

p. 115*A.) Contact and duration of heat transfer

Question 145

Which material is used to insulate steel and wood structural members due to its ability to absorb a great deal of heat

Answer 145

p. 132*B.) Gypsum

Question 146

Which material may be used for the subflooring in manufactured homes

Answer 146

p. 148*B.) Particleboard

Question 147

Which is NOT correct about dust explosions

Answer 147

p. 117*C.) Dust concentrations have an upper explosive limit but no lower explosive limit

Question 148

Which is often used in the construction of fire walls

Answer 148

p. 126*D.) Masonry

Question 149

What normally causes the collapse of a masonry wall during fire conditions

Answer 149

p. 127*D.) Collapse of interior wood framing

Question 150

What determines the overall fire resistance of the reinforced concrete wall

Answer 150

p. 128*C.) Depth of concrete cover

Question 151

What does the fire resistance of a masonry wall dependUpon

Answer 151

p. 126*A.) Material and thickness

Question 152

What size should the collapse exclusion zone be when a building has a masonry exterior wall

Answer 152

p. 127-128*C.) One and one-half times the height of the wall

Question 153

What should be done during the investigation if columns and/or the connections of beams are compromised

Answer 153

p. 143*B.) Shore them up

Question 154

How should it be assumed the masonry wall will collapse when the building is heavily involved in fire

Answer 154

p. 127*C.) Out from the building

Question 155

Which construction type of built in two or more sections at the factory

Answer 155

p. 138*A.) Modular

Question 156

Which is NOT a correct statement about the migration of fuel gases

Answer 156

p. 112-113*C.) Odorants will be more noticeable the farther it travels

Question 157

Which rarely show signs of loss of integrity or seriousDeterioration

Answer 157

p. 127*A.) Bricks

Question 158

What is used to determine the flame speed during anExplosion

Answer 158

p. 113*C.) Center of the explosion

Question 159

Which type of glass may be installed where fire resistance is needed

Answer 159

p. 132*D.) Wired

Question 160

What happens when a blast front is not strong enough to damage a container material

Answer 160

p. 104*A.) Reflects off the surface

Question 161

Which is NOT a correct statement about factors that affect the behavior of fires in a manufactured home

Answer 161

p. 136*B.) Large compartment sizes

Question 162

What may cause cast iron to crack or shatter

Answer 162

p. 131*B.) Cooling with water during fire-fighting operation

Question 163

What is one of the most significant effects fire and heat have on concrete

Answer 163

p. 129*A.) Spalling

Question 164

Where must the gusset plates be nailed to avoid warping and failing quickly when exposed to heat

Answer 164

p. 146*A.) Corner

Question 165

Which phase is responsible for most of the damage during aDeflagration

Answer 165

p. 104*D.) Positive-pressure phase

Question 166

Which is NOT a type of low-order damage from an explosion

Answer 166

p. 101*D.) Debris is small and plentiful

Question 167

With which construction type are the walls, floors, and ceilings manufactured complete with plumbing, electrical wiring, and millwork

Answer 167

p. 137D.) Prefabricated-Which of the following is the burning velocity NOT dependent upon as it relates to the unburned gases? p. 114A.) Volume

Question 168

Where does the floor transmit the live and dead load of the floor system within the building

Answer 168

p. 146*C.) Structural frame

Question 169

Who should be called in to assist when there is a migrated fuel gas investigation

Answer 169

p. 112*A.) Utility company

Question 170

Which is NOT a correct statement

Answer 170

p. 109*B.) Ratios above the upper flammable limit are considered too lean for an explosion to occur

Question 171

What is present that helps to keep flames, smoke, and heat from spreading from one room or floor to another

Answer 171

p. 149*D.) Compartmentation

Question 172

With which type of construction can fire spread verticallyUnimpeded

Answer 172

p. 143-144*B.) Balloon-frame

Question 173

Which type of building contains noncombustible structural members and have a specified degree of fire resistance

Answer 173

p. 135*C.) Type I

Question 174

What does secondary damage due to shrapnel often Introduce

Answer 174

p. 104*C.) New sources of fuel

Question 175

What can result as turbulence enhances the fuel-to-air ratio in other areas of a structure

Answer 175

p. 114*D.) Secondary explosions

Question 176

What does any expanding blast front attempt to reach

Answer 176

p. 115*A.) Ventilation point

Question 177

Which is the primary reason for injuries and damage with a detonation

Answer 177

p. 104*C.) Blast-pressure front

Question 178

Which is NOT a correct statement about seated explosions

Answer 178

p. 107*B.) Seated explosions are associated with a lack of sound

Question 179

Plastics with low flammability can produce toxic gases beginning at what temperature

Answer 179

p. 134*A.) 500^F (260^C)

Question 180

What do the burning of interior finishes hasten during a Fire

Answer 180

p. 149C.) Flashover-What can be used to differentiate between a deflagration and detonation? p. 101C.) Fuel pressure release rate

Question 181

What changes the shape of the explosion and alters the movement of the gases involved

Answer 181

p. 114*C.) Turbulence

Question 182

When were BLEVEs first studied

Answer 182

p. 107*A.) 1957

Question 183

During a deflagration, what must increase for the speed of the explosion reaction to increase

Answer 183

p. 101*D.) Pressure on the fuel

Question 184

To which force does concrete have little resistance

Answer 184

p. 129*C.) Tensile

Question 185

What is the most significant characteristic of steel for the fire investigator

Answer 185

p. 130*A.) Reaction to high temperatures

Question 186

Which is NOT a commonly used material in the construction of ceilings

Answer 186

p. 143*D.) Tin

Question 187

What material was originally used to construct arches

Answer 187

p. 139*B.) Masonry

Question 188

Which is NOT a correct statement

Answer 188

p. 102*A.) In ideal conditions explosions project heat and pressureIn an upward direction

Question 189

What is the area where a fuel gas is mixing with ambient Air

Answer 189

p. 110*B.) Interface

Question 190

What is the minimum thickness of the concrete in open web joist or truss steel floor systems

Answer 190

p. 147*B.) 2 inches (50 mm)

Question 191

Which is space often created within the building to accommodate building services above the ceiling

Answer 191

p. 150*C.) Interstitial

Question 192

What type of load is designed into the geodesic building

Answer 192

p. 138*D.) Tensile

Question 193

What is the most common explosion that investigators Encounter

Answer 193

p. 109*A.) Gas/vapor

Question 194

Temperature variations over what reading will result in glass cracking

Answer 194

p. 133*C.) 158^F (70^C)

Question 195

Which is a true statement when the air/fuel mixture is slightly richer than stoichiometric

Answer 195

p. 110*C.) The speed of the flame front is the greatest and ignition of common combustibles are less likely

Question 196

Which is NOT a correct statement

Answer 196

p. 106*C.) Deflagrations produce the greatest amount of heat

Question 197

What occurs that can limit the amount of damage seen from an explosion

Answer 197

p. 116*C.) Ventilation

Question 198

In which of the following do the most violent BLEVEsOccur

Answer 198

p. 108*A.) Liquefied compressed gases

Question 199

What is considered the most important factor in determining the violence of a gas/vapor explosion

Answer 199

p. 109*C.) Fuel-to-air ratio in the compartment

Question 200

What describes how rapidly the heat of the explosion is combusting available fuel and generating the flame front

Answer 200

p. 113*D.) Burning velocity

Question 201

What is attached first to the foundation when a platform-frame building is being constructed

Answer 201

p. 144*D.) Wood sill

Question 202

What is the ability of a structural assembly to maintain its load-bearing capacity and structural integrity under fire conditions

Answer 202

p. 124*A.) Fire resistance

Question 203

What would most likely need to happen for the fuel-gas product to ignite in the piping system

Answer 203

p. 159*C.) Leak from the system

Question 204

What can the fire investigator conclude when the electrical safety devices operated at a fire scene

Answer 204

p. 206*B.) An electrical event may have occurred

Question 205

What is used to keep most automatic fire sprinkler systems Closed

Answer 205

p. 164*A.) Fusible links

Question 206

In which location are process alarms often found

Answer 206

p. 170*C.) Industrial

Question 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

Answer 207

p. 204*B.) The electrical system was deenergized after the time of the fire

Question 208

Which material has a lower resistance which makes it a good conductor of electricity

Answer 208

p. 184*A.) Copper

Question 209

What color is the neutral conductor located at the box

Answer 209

p. 200*C.) White

Question 210

What is the type of fuse the fire investigator will encounter where up to 30 amperes is required

Answer 210

p. 198*D.) Plug

Question 211

Which measurements are used to calculate power

Answer 211

p. 186*D.) Voltage and Current

Question 212

In which type of circuit will the failure of one light result in the other light not working

Answer 212

p. 181*C.) Series

Question 213

Where can the investigator find additional information after an alarm has activated

Answer 213

p. 169*B.) Alarm panel

Question 214

What is the main function of a fire pump

Answer 214

p. 166*A.) Increase water pressure

Question 215

In which electrical circuit does the current move through the circuit in one direction

Answer 215

p. 180*D.) Direct current

Question 216

What size AWG copper cable would be used with the 20-ampere circuit found in most homes

Answer 216

p. 187*C.) No. 12

Question 217

Where is the grounding rod located that is used as a backup ground for the panelboard

Answer 217

p. 200*A.) Near the service entrance

Question 218

Which NFPA standard covers the National Electricity Code

Answer 218

p. 177*A.) NFPA 70

Question 219

At what point is the operating pressure in the fuel-gas system regulated

Answer 219

p. 160*B.) Before entering a structure

Question 220

Approximately what percent of fires are controlled or extinguished by automatic fire sprinkler systems

Answer 220

*A.) 94 percent

Question 221

How long will it take a typical 20-amphere circuit breaker to trip with a current of 30 amperes

Answer 221

p. 200*C.) 15 minutes

Question 222

Where does the initiating device send an alarm to in the fire detection system

Answer 222

p. 167*B.) Fire alarm control panel

Question 223

What leads from the overcurrent protection device in the circuit breaker panel to service the rooms and equipment in a building

Answer 223

p. 194*C.) Branch circuits

Question 224

What unit of measurement is used to determine the resistance in the circuit

Answer 224

p. 183*D.) Ohms

Question 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

Answer 225

p. 189*A.) Ratio of windings in the primary and secondary coils

Question 226

What are small solid particles that are produced when a short circuit occurs between metal objects that were normally insulated from each other

Answer 226

p. 205*B.) Sparks

Question 227

What material is used to construct the pipes in piping systems

Answer 227

*D.) Metal

Question 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

Answer 228

p. 192*B.) Thre

Question 229

What will generally be found providing overcurrent protection in newer residential buildings

Answer 229

p. 198*C.) Circuit breakers

Question 230

Which energy-production system is constructed from combustible materials

Answer 230

p. 158*A.) Cooling tower

Question 231

What is an older method of storing video surveillance Recordings

Answer 231

p. 170*B.) VHS

Question 232

How many cycles per second does the AC power used in the North America have

Answer 232

p. 188*B.) 60

Question 233

At approximately how many amps does the Class A GFCI Respond

Answer 233

p. 201*C.) 005 amps

Question 234

What does the ampacity of the service determine

Answer 234

p. 192*B.) Size of the conductor

Question 235

What is used to determine the American Wire Gauge

Answer 235

p. 183*B.) Diameter of the wire

Question 236

What formula is used to calculate voltage

Answer 236

p. 184*C.) Voltage = Current X Resistance

Question 237

What are the most common circuits that investigators will Encounter

Answer 237

p. 181*B.) Parallel

Question 238

At what point within the cycle of the coil within a generator does the maximum voltage of the opposite polarity occur

Answer 238

p. 188*B.) 270 degrees

Question 239

What is the movement of charge in a conductor

Answer 239

p. 178*C.) Electric current

Question 240

What formula is used to calculate current

Answer 240

p. 185*A.) Current = Voltage / Resistance

Question 241

Which type of building system is the boiler

Answer 241

p. 157-158*B.) Energy production

Question 242

What size aluminum conductors are used in most modern service connections to residential properties

Answer 242

p. 192*D.) No. 2

Question 243

Where can the investigator find product standards established by the National Electrical Code

Answer 243

p. 177*C.) NFPA 70 Part 2

Question 244

What should the investigator avoid pertaining to building services

Answer 244

*B.) Operation

Question 245

What is normally the capacity of the plug cap in the service for mobile homes

Answer 245

p. 193*C.) 50 amperes

Question 246

What does the smoke-control system change that pertains to the fire investigation

Answer 246

p. 164*C.) Size of fire patterns

Question 247

Which NFPA standard regulates the design and installation of electrical systems

Answer 247

p. 160*B.) NFPA 70

Question 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

Answer 248

p. 164*A.) 82 percent

Question 249

What are negatively charged particles that revolve around the nucleus of atoms

Answer 249

p. 178*B.) Electrons

Question 250

What occurs when electricity flows across a gap in a manner that was not intended

Answer 250

p. 204*A.) Electrical arc

Question 251

What is an unintended path of current flow between a conductor and the earth

Answer 251

p. 201*A.) Ground fault

Question 252

Where does the heat to ignite combustibles often come from in the transportation and conveyance system

Answer 252

p. 162*A.) Electrical components of the system

Question 253

Which NFPA code should be referenced for requirements for elevators which will be used as part of the egress system for a building

Answer 253

p. 162*D.) NFPA 101

Question 254

How is electrical pressure expressed

Answer 254

p. 178*C.) Volts

Question 255

What is the electrical system equivalent to the valve in the water system

Answer 255

p. 179*D.) Switch

Question 256

What is designed to provide a means to rapidly deploy fire hoses on all floors of a multistory building

Answer 256

p. 166*C.) Standpipe system

Question 257

Where does electricity tend to travel

Answer 257

p. 200*D.) To the ground

Question 258

How is an electrical system normally deenergized in a residential building

Answer 258

p. 202*B.) Remove the meter

Question 259

What are devices specifically used when a connection is made with aluminum wires marked with currently

Answer 259

p. 197*B.) AL/CU

Question 260

How many volts will there be between the insulated conductors of the service to a residential property

Answer 260

p. 192*A.) 240 volts

Question 261

How is voltage within a circuit measured

Answer 261

p. 183*B.) Voltmeter is placed parallel to the circuit

Question 262

What may help the investigator in determining the origin of the fire or initial incident that caused the fire

Answer 262

p. 169*C.) Alarm activation sequence

Question 263

What is used to operate a circuit breaker in response to a short circuit

Answer 263

p. 199*D.) Magnet

Question 264

What level of overcurrent protection will be present for a 15 ampere branch circuit

Answer 264

p. 196*A.) 15 ampere

Question 265

Who should be able to access any entrance at the facility when specialize-access entry systems are in place

Answer 265

p. 171*C.) Security personnel

Question 266

What is used to help prevent the electrical system from becoming an ignition source

Answer 266

p. 197*C.) Overcurrent protection

Question 267

What can be installed within the ductwork of an environmental system that prevents smoke from traveling throughout a building

Answer 267

p. 159*C.) Smoke damper

Question 268

Which NFPA standard will assist the investigator in understanding of codes that regulate chimneys, fireplaces, vents, and solid fuel-burning appliances

Answer 268

p. 162*A.) NFPA 211

Question 269

What is a low-resistance path between conductors that allows a high current flow

Answer 269

p. 199*C.) Short circuit

Question 270

What is failure most often attributed to with any water-based fire-suppression system

Answer 270

p. 165*B.) Human actions

Question 271

What is used to alert occupants to the unlawful entry to aFacility

Answer 271

p. 169*A.) Monitoring system

Question 272

What material is the core made from which coils are wrapped around in the transformer

Answer 272

p. 189*A.) Iron

Question 273

What is produced by resistance in the electrical system

Answer 273

p. 180*A.) Heat

Question 274

Where must any splice in a wire or connection to a device be made under Section 315 if the NEC

Answer 274

p. 197*B.) Electrical box

Question 275

What are 40 or 50 ampere circuits permitted for in a Dwelling

Answer 275

p. 194*A.) Fixed cooking appliances

Question 276

What is the minimum number of wires found in Romex wiring

Answer 276

p. 196*C.) Two

Question 277

Where does the environmental system obtain the make-up air

Answer 277

p. 159*D.) Exterior of the building

Question 278

Which is NOT a correct statement about the usage of an Ohmmeter

Answer 278

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

Question 279

What should be used to protect penetrations in walls and floors for transportation and conveyance systems

Answer 279

p. 161*A.) Fire dampers

Question 280

What would the fire investigator add together to determine the total load on a circuit

Answer 280

p. 187*C.) Wattages

Question 281

What is the electrical force that causes the flow of electricity called

Answer 281

p. 178*B.) Voltage

Question 282

What commonly occurs when an electrical source is insulated to the point that the heat generated from the electricity cannot be dissipated

Answer 282

p. 206*D.) Resistance heating

Question 283

What happens to the bimetallic strip that leads to tripping the circuit

Answer 283

p. 199*C.) Bends

Question 284

What is defined as the amount of energy delivered over a period of time

Answer 284

p. 186*B.) Power

Question 285

Which is one of the most commonly used conductors in Wiring

Answer 285

p. 178*D.) Copper

Question 286

What is the primary reasons that the resistance in long transmission lines occurs

Answer 286

p. 189*D.) Energy being converted to heat

Question 287

Which is a correct statement about transformers

Answer 287

p. 191*C.) The power into and out of a transformer is the same

Question 288

What is the maximum that NFPA 921 recommends the container holding solid debris as ignitable-liquid evidence be filled

Answer 288

p. 280*C.) Two-thirds

Question 289

Why should wet paper products be air-dried before packaging if they are not suspected of containing ignitable-liquid evidence

Answer 289

p. 275*C.) Prevent mildew

Question 290

Why is glass at the scene be marked in place during evidence collection

Answer 290

p. 272*A.) Prevent it from being stepped on

Question 291

Which is considered to be the key component of the documentation process

Answer 291

p. 246*D.) Photographs

Question 292

What is essential for providing additional lighting for fire scene photographs

Answer 292

p. 255*D.) Electronic flash

Question 293

With whom does the occupant have a legal obligation to cooperate during an investigation under a contractual entry

Answer 293

p. 223*D.) Insurer

Question 294

In which of the following should adhesive tape be packaged when collecting it from the scene

Answer 294

p. 282*B.) Paper bag

Question 295

In what type of containers should all materials collected as ignitable-liquid evidence be packaged

Answer 295

p. 279*A.) Airtight

Question 296

What should the investigator do when the area of origin is being shifted through and reconstructed

Answer 296

p. 248*D.) Photograph each step

Question 297

Which cannot be determined by laboratory analysis of Cigarettes

Answer 297

p. 276*A.) If the cigarette originated from a specific pack

Question 298

What should be used to develop the hypothesis during a fire Investigation

Answer 298

p. 216*D.) Data collected

Question 299

What size print should any DSLR camera being used by the investigator be able to print in high quality

Answer 299

p. 248*D.) 8 X 10-inch

Question 300

How many tags should be placed on each wire when collecting it for evidence

Answer 300

p. 277*B.) Two

Question 301

What is the best tool to use when reducing lens vibration

Answer 301

p. 253*C.) Tripod

Question 302

In which NFPA standard can the definition used for physical evidence be found

Answer 302

p. 264*C.) NFPA 921

Question 303

DSLR cameras starting with what megapixel rating will be able to produce a quality 8 X 10-inch photo

Answer 303

p. 250*D.) 8

Question 304

Where should the investigator begin taking photographs when documenting a fire scene

Answer 304

p. 247*C.) Outside of the fire building

Question 305

What is the primary objective for securing the scene

Answer 305

p. 229*D.) Protect evidence

Question 306

What refers to evidence that has been destroyed or otherwise not preserved by someone who has responsibility for the evidence

Answer 306

p. 231*B.) Spoliation

Question 307

Which is NOT a correct statement regarding warrants

Answer 307

p. 222*B.) Investigators entering subsequent to a fire can stay as long as necessary to determine the cause and origin of the fire

Question 308

Approximately what amount of time should the calcium carbonate be allowed to sit when absorbing ignitable-liquid evidence from concrete

Answer 308

p. 280*B.) 30 minutes

Question 309

Approximately how many high-quality images can a 1-GB memory card hold

Answer 309

p. 258*A.) 200-250

Question 310

What is done that will help prevent contamination of Evidence

Answer 310

p. 230*B.) Restrict access

Question 311

What can be used to depict the damaged or affected areas when an explosion or hazardous materials spill has occurred

Answer 311

p. 244*B.) Map

Question 312

Which NFPA standard requires that investigators conduct investigations using the scientific method

Answer 312

p. 215*D.) NFPA 1033

Question 313

What can be used when completing a sketch that will allow the investigator to draw the area to scale

Answer 313

p. 243*C.) Grid paper

Question 314

What should be done with potential evidence before a detailed examination when an investigation is considered to be criminal

Answer 314

p. 234*D.) Mark it

Question 315

What controls the amount of time the sensor is exposed to light when using a digital camera

Answer 315

p. 251*B.) Shutter

Question 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

Answer 316

p. 246*C.) Collect data

Question 317

What focal length range is best suited for the fire Investigator

Answer 317

p. 253*B.) 28 mm to 105 mm

Question 318

What will determine which physical evidence is collected at the fire scene

Answer 318

p. 265*A.) The relationship to the incident

Question 319

Under which condition do investigators most commonly enter the fire scene

Answer 319

p. 219*A.) Exigent circumstances

Question 320

Approximately what distance down should the investigator dig when collecting soil as ignitable-liquid evidence

Answer 320

p. 280*C.) 6-8 inches (150 to 200 mm)

Question 321

What type of material should be used to package glass fragments being collected as evidence

Answer 321

p. 273*A.) Cotton

Question 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

Answer 322

p. 222*B.) Criminal search warrant

Question 323

What would need to happen if entries made concerning investigations made with an administrative warrant if evidence of a crime is found

Answer 323

p. 222*C.) Temporarily halted

Question 324

How much of the concrete should be chipped and added to the container with the calcium carbonate when collecting ignitable-liquid evidence

Answer 324

p. 280*B.) 1/4-inch (13 mm) layer

Question 325

What stipulation did the U.S. Supreme Court rule on in Michigan v. Tyler about collection of evidence of arson

Answer 325

p. 220*C.) Firefighters may collect evidence that is in plain view

Question 326

During the investigation, what should be the next step if the origin and cause is not determined

Answer 326

p. 214*D.) Continue the investigation

Question 327

What should be listed as the cause of the fire when multiple hypotheses are determined to be equally possible

Answer 327

p. 216*B.) List as undetermined

Question 328

What should be used to cover the investigator’s hands while collecting evidence

Answer 328

p. 270*B.) Unused latex gloves

Question 329

With which of the following should the fire investigator work closely with when collecting evidence from victims

Answer 329

p. 283*B.) Law enforcement

Question 330

Which is NOT a correct statement about establishing a Perimeter

Answer 330

p. 233*C.) Make the perimeter the minimum size necessary to preventOver use of present resources

Question 331

What can prevent the fire investigator from gaining entry with exigent circumstances

Answer 331

p. 220*D.) Leaving the scene

Question 332

What can be done to help reduce light reflection from the Flash

Answer 332

p. 256*C.) Remove flash from the camera and hold it at an angle

Question 333

Which is the most common type of documentation that investigators use

Answer 333

p. 240*C.) Field notes

Question 334

What should be done with charred materials to prevent additional deterioration during the collection and packaging process

Answer 334

p. 275*B.) Place on a sheet of cardboard

Question 335

What should be used to ensure a photograph with more Detail

Answer 335

p. 254*C.) Greater depth of field

Question 336

How should wet wood items that will not be used as ignitable-liquid evidence be handled

Answer 336

p. 275*C.) Air-dry before packaging

Question 337

What should be used to pad small electrical components when collected for evidence

Answer 337

p. 278*A.) Paper

Question 338

What would need to be done if it is discovered that outside research does not closely resemble the fire conditions during an investigation

Answer 338

p. 217*A.) Retest the hypothesis

Question 339

Where is the aperture opening located

Answer 339

p. 251*C.) Lens

Question 340

Which of the following should be done first when collecting electrical system evidence

Answer 340

p. 277*D.) Document it in place

Question 341

Which is considered the best application of video camera documentation during the fire investigation

Answer 341

p. 259*A.) Depiction of any event that takes place over a reasonable period of time where sequencing is important

Question 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

Answer 342

p. 281*B.) Cork

Question 343

Approximately what portion of the distance into the overall setting should the investigator place the subject into the area that is in focus

Answer 343

p. 254*B.) One-third

Question 344

What does not happen when consent is withdrawn from the owner/occupant during an investigation

Answer 344

p. 221*B.) Investigator must leave the premises

Question 345

Which is the best ISO setting choice for most fire investigators for interior photographs of the fire scene

Answer 345

p. 255*D.) High speed

Question 346

Where should the identification number be recorded for each piece of evidence collected

Answer 346

p. 267*C.) Investigation notes and scene diagram

Question 347

What is essential in any investigation because the scene is most often altered or destroyed during or after the investigation

Answer 347

p. 239*A.) Good documentation

Question 348

What is the minimum resolution that investigators should print any photographs

Answer 348

p. 250*B.) 300 ppi

Question 349

How many times the distance of the farthest piece of debris should the perimeter for explosions be established

Answer 349

p. 232*D.) 5

Question 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

Answer 350

p. 272*D.) Photograph all remaining glass in the broken window

Question 351

Which is NOT a piece of information that should be collected anytime the custody of a piece of evidence changes

Answer 351

p. 267*B.) Location that the item was found on scene and who located It

Question 352

What is required in most jurisdictions in order to obtain entry after the fire department has left the scene

Answer 352

p. 221*B.) Administrative warrant

Question 353

What is the next thing to act upon the image after light passes through the lens of the digital camera

Answer 353

p. 251*A.) Prism

Question 354

What is moved when photographing a large area under low-light conditions

Answer 354

p. 256*C.) Flash

Question 355

Where can most manual settings for DSLR cameras be controlled

Answer 355

p. 250*B.) Dial on the back

Question 356

Who is initially responsible for the security of the Scene

Answer 356

p. 229*B.) Fire-suppression personnel

Question 357

What encompasses anything that can taint physical Evidence

Answer 357

p. 231*B.) Contamination

Question 358

When should the sketch of the fire scene be completed

Answer 358

p. 241*A.) While on the scene

Question 359

What should be used to clean the tools during the investigation that are used to collect evidence at the incident scene

Answer 359

p. 270*A.) Dishwashing detergent

Question 360

What can the investigator do if fire suppression activities are still under way upon arrival

Answer 360

p. 217*C.) Interview witnesses

Question 361

Which should NOT be included in the investigator’s field Notes

Answer 361

p. 241*C.) All personal comments or opinions

Question 362

What must be present to create a secure investigation Scene

Answer 362

p. 229*D.) Perimeter

Question 363

What should be done before any photo is edited

Answer 363

p. 258*D.) Preserve a copy of the original

Question 364

How should remaining fragments of a larger item be packaged when the document is in numerous pieces

Answer 364

p. 276*A.) With the larger item

Question 365

Where is the preferred location to store fire investigation photographs

Answer 365

p. 258*A.) CD-ROM

Question 366

What determines the timing of the witness interviews

Answer 366

p. 218*B.) Investigator

Question 367

Where should the perimeter be located at a building fire

Answer 367

p. 232*C.) Beyond farthest piece of evidence found outside

Question 368

What determines the packaging technique for glass Evidence

Answer 368

p. 273*D.) Size of the glass fragment

Question 369

What is a key consideration when developing sketches during an investigation

Answer 369

p. 243*D.) Keep them as uncluttered as possible

Question 370

What setting is changed when bracketing in difficult lighting situations

Answer 370

p. 252*A.) Aperture size

Question 371

What is the first step in the scientific method when it is applied to a fire investigation

Answer 371

p. 215*B.) Recognize the need

Question 372

In what form is most evidence collected at the scene

Answer 372

p. 265*C.) Artifact

Question 373

When in water, where will the investigator tend to find hydrocarbon-based ignitable liquids

Answer 373

p. 279*B.) On the surface

Question 374

Which ISO setting is good for use outside with natural Lighting

Answer 374

p. 255*A.) Slow speed

Question 375

What is the first step taken once the right of entry as been obtained during the fire investigation

Answer 375

p. 214*C.) Safety assessment

Question 376

Which material is most commonly used to transport materials collected as ignitable-liquid evidence

Answer 376

p. 279*B.) Metal

Question 377

Which may be used to depict the floor plan of a fire building

Answer 377

*C.) Drawing

Question 378

What is considered to be normal focal length lens

Answer 378

p. 252*B.) 50 to 55 mm

Question 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

Answer 379

p. 233-234*B.) Send firefighters into the scene in pairs

Question 380

What should be used to show how an item was found and its relationship to other items during an investigation

Answer 380

p. 240*A.) Photographs

Question 381

Which is NOT recommended when packaging cigarettes or cigarette butts at the incident scene

Answer 381

p. 276*B.) Use a plastic bag as a container

Question 382

At what level is something considered to be probable

Answer 382

p. 216*B.) 1 percent

Question 383

Which is NOT a correct statement about collecting appliances and equipment from the incident scene

Answer 383

p. 278*B.) All controls should be operated to check for condition

Question 384

What record should be kept for photographs

Answer 384

p. 247*A.) Time and date

Question 385

Which material can be used to package small glass fragments that are collected at the scene

Answer 385

p. 273*A.) Glass

Question 386

Where can forms suitable for photocopying to assist in the collection of investigative information be found

Answer 386

p. 241*A.) NFPA 921

Question 387

Which is NOT a correct statement about fire patterns

Answer 387

p. 326-327*B.) Smooth surfaces will be more heavily damaged than roughSurfaces

Question 388

Who is responsible for meter booting

Answer 388

p. 307*A.) Utility company

Question 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

Answer 389

p. 302*A.) Fifty percent

Question 390

How is the heat energy transferred in the gas layer when hot gases flow over walls and open doors

Answer 390

p. 333*B.) Conduction

Question 391

What does a clean burn pattern indicate

Answer 391

p. 336*C.) Area where the surface was exposed to fire

Question 392

Which would found on a conductor be indicative of an arc

Answer 392

p. 348*D.) Melted metal

Question 393

What is the width of the V a function of with plume-generated fire patterns

Answer 393

p. 330*D.) Size of the flame zone

Question 394

What should the fire investigator pay particular attention to when choosing the debris removal location

Answer 394

p. 357*D.) Origin area indicators

Question 395

Where does the exterior of a scene begin for theInvestigator

Answer 395

p. 305*A.) Perimeter of the scene

Question 396

What is the key similarity between investigations at a fire scene and an explosion scene

Answer 396

p. 309*B.) Process used to examine both scenes

Question 397

Where will damage be seen when air flows into the compartment from under the door

Answer 397

p. 334*C.) Upper portion of the door on the side exposed to the fire

Question 398

What can be done to capture the arcing for examination that is a less destructive method

Answer 398

p. 350*A.) X-ray

Question 399

Which part of the circular-shaped fire pattern should show greater damage from the fire

Answer 399

p. 332*B.) Center

Question 400

Which is NOT deemed a necessary piece of information that should be included in the statement given by the interviewee

Answer 400

p. 295*A.) Method used to record the statement

Question 401

Which is NOT something the fire investigator will use to determine the proper areas to first examine and excavate

Answer 401

p. 356*B.) Analysis of adjacent structures

Question 402

How should arrows be used on vector diagrams

Answer 402

p. 345*B.) Area of most to least damage

Question 403

What exterior burn pattern will often be the result of ventilation from the interior

Answer 403

p. 325*C.) V-patterns

Question 404

Which type of heat transfer is blocked when heat shadowingOccurs

Answer 404

p. 341A.) Radiant—What is the simplest and most commonly used method to document an interview? p. 295D.) Note taking

Question 405

After what date has multiagency intelligence information sharing become the norm

Answer 405

p. 303*C.) 9/11/2001

Question 406

When should notes be taken when a recording device is being used during an interview

Answer 406

p. 294*A.) At the conclusion of the interview

Question 407

Which Constitutional Amendment guarantees that no person accused of a criminal offense can be compelled to be a witness against himself

Answer 407

p. 290*A.) Fifth

Question 408

What causes fuel to be suspended in the upper layer of the compartment in the form of hot gases during ventilation-limited conditions

Answer 408

p. 335*A.) Incomplete combustion

Question 409

Which is a sign of a movement pattern

Answer 409

p. 344*D.) Greater char on one side

Question 410

During debris removal, when should the investigator take a photograph of each item

Answer 410

p. 359*D.) In place as it was found

Question 411

Often what is the most specific that the investigator is able designate the origin of a deflagration

Answer 411

p. 316*B.) Room it occurred

Question 412

Which is NOT correct about evidence and data collection

Answer 412

p. 304*A.) Once evidence shows the fire was incendiary, data collection can stop

Question 413

What will determining the fuel involved in the explosion help to later determine

Answer 413

p. 310*A.) Area of origin

Question 414

What determines the height of the inverted V caused by the flame in an hourglass fire pattern

Answer 414

p. 330*B.) Actual flame height the fuel package generates

Question 415

What should be done to encourage the interviewee to possibly give more information than was originally asked for

Answer 415

p. 294*A.) Ask open-ended questions

Question 416

What may wicking look like along the edges of the major pattern when a trailer is present

Answer 416

p. 338*A.) Fingers

Question 417

What pattern is seen when a pool of liquid is ignited on a floor surface

Answer 417

p. 338*B.) Doughnut-shaped

Question 418

What happens when fire gases flow through structural openings such as doors and windows

Answer 418

p. 335*B.) Velocity is increased

Question 419

What happens to the heat transfer where the plume makes contact with any building or contents’ surfaces

Answer 419

p. 324*B.) Heat transferred is greater and lasts for a longer time

Question 420

What is the most useful place to draw the vector diagram

Answer 420

p. 345*B.) Diagram of the prefire condition of the fire room or area

Question 421

Which is considered too often be the most difficult aspect of an explosion investigation

Answer 421

p. 317*D.) Ignition-source identification

Question 422

Which does not contribute to BLEVEs but does cause high-order damage

Answer 422

p. 311*A.) Explosives

Question 423

Which is one of the most common mistakes that an interviewer will make

Answer 423

p. 294*B.) Not allowing the interviewee to tell their story

Question 424

Which must be done first

Answer 424

p. 324*D.) Determine area of origin

Question 425

How far apart do personnel space themselves during a line Search

Answer 425

p. 314*A.) Arms length apart

Question 426

What must be done before scene reconstruction can take Place

Answer 426

p. 360*C.) Debris removal

Question 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

Answer 427

p. 328*D.) Shape of the pattern

Question 428

What about the blast pressure in an explosion does the force-vector analysis show

Answer 428

p. 315*C.) Direction

Question 429

Where does the upper layer of the plume expand as the compartment transitions through flashover and into full-room involvement

Answer 429

p. 324-325*A.) Towards the floor

Question 430

What do the layers of debris represent to the fire Investigator

Answer 430

p. 358*B.) Fire’s timeline

Question 431

What is the main difference between the U-shaped fire pattern and the V-shaped fire pattern

Answer 431

p. 330*B.) U-shaped appears higher on vertical surfaces

Question 432

How many fuel packages are responsible for a fire pattern

Answer 432

p. 342*A.) One

Question 433

Where do circular-shaped fire patterns appear

Answer 433

p. 332*D.) Undersides of horizontal surfaces

Question 434

What should the fire investigator attempt to correlate the fire patterns found with when forming a hypothesis

Answer 434

p. 344*A.) Fuel packages

Question 435

What has been shown to be the primary factor behind fire-pattern creation

Answer 435

p. 324*D.) Amount of radiant heat flux on a material’s surface

Question 436

Where should the char gauge be inserted when measuring char depth

Answer 436

p. 346*A.) Center of the char blister

Question 437

Which fuels tend to result in deflagrations and can contribute to BLEVEs

Answer 437

p. 310*B.) Heavier-than-air-gases

Question 438

Which is NOT a correct statement about excavation and debris removal

Answer 438

p. 357*D.) Decisions made at the onset will need to remain the same throughout the process

Question 439

What type of burning should be investigated as an exterior Fire

Answer 439

p. 326*D.) Low burning

Question 440

What part of the structural components such as wood studs or trim are burned away that result in pointer or arrow patterns

Answer 440

p. 336*D.) Sharp edges

Question 441

Which is NOT a key objective of fire scene reconstruction

Answer 441

p. 361*C.) Identify and document fire speed and intensity

Question 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

Answer 442

p. 358*A.) One

Question 443

What part of the V-shaped fire pattern points to where the flame was coming from as the pattern was made

Answer 443

p. 329*D.) Bottom of the V

Question 444

What can force trapped, unburned products of combustion outside the compartment through open doors

Answer 444

p. 343*C.) Ventilation

Question 445

Which is NOT considered to be a key objective of debris Removal

Answer 445

p. 356*C.) Determine the person responsible

Question 446

What should be done first when the investigator moves to the interior examination

Answer 446

p. 308*A.) Perform a walkthrough

Question 447

What should be done with witnesses once they have been identified at the scene

Answer 447

p. 291*A.) Separate them from others

Question 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

Answer 448

p. 290*B.) Miranda warning

Question 449

Which should the interviewer NOT do when conducting theInterview

Answer 449

p. 294*A.) Provide information about the incident in question

Question 450

What should be the first step in an interview

Answer 450

p. 292*B.) Introductions

Question 451

What is used to survey and map arcs at the scene

Answer 451

p. 347*A.) Damage on conductors

Question 452

What is very useful for identifying small pieces of evidence in the immediate origin area when the area is badly damaged

Answer 452

p. 360*A.) Small sieves

Question 453

What should the investigator do if a piece of evidence cannot be protected in its current location

Answer 453

p. 306*D.) Document and collect the material

Question 454

What is used to categorize plume-generated fire patterns

Answer 454

p. 328*C.) Geometrical shapes

Question 455

What orientation are the lines created by hot-gas-layer fire patterns

Answer 455

p. 334*D.) Horizontal

Question 456

Which is associated with very powerful, seated explosions which can shake and damage adjacent structures

Answer 456

p. 312*C.) Seismic energy

Question 457

What must be done first when the investigator is planning an interview

Answer 457

p. 291*B.) Establish the goals

Question 458

How many people should be interviewed at once when multiple witnesses were present at an incident

Answer 458

p. 292*C.) One

Question 459

Who is responsible for determining the level of detail that is required for the interior examination

Answer 459

p. 308*C.) Investigator

Question 460

Where will explosive device reconstruction most likely take place

Answer 460

p. 314*A.) Forensic lab

Question 461

Which event is much more likely during the explosion scene investigation than a fire scene investigation

Answer 461

p. 309*A.) Building collapse

Question 462

Which is NOT a correct statement about fire-pattern analysis

Answer 462

*B.) The area of greatest damage is always the area of origin

Question 463

What is the first thing the investigator should do once an arcing site is located

Answer 463

p. 348*A.) Mark it

Question 464

Where does the fire occur that results in a V-shaped fire Pattern

Answer 464

p. 328*C.) Next to a vertical surface

Question 465

When a ceiling jet is formed by the intersection of the plume and a ceiling, where is the greater heat transferred first

Answer 465

p. 324*A.) Ceiling

Question 466

What does the initial explosion show the most evidence of

Answer 466

p. 316*D.) Ventilation

Question 467

What can the depth of char indicate to the investigator

Answer 467

p. 345*D.) Which portions of a surface burned longer than others

Question 468

In which fire pattern is the compartment usually heavily damaged from ceiling to floor levels

Answer 468

p. 336*B.) Full-room involvement

Question 469

Which piece of information can the interviewer NOT require when identifying the interviewee

Answer 469

p. 293*B.) Social security number

Question 470

Which is NOT a correct statement about dust explosions

Answer 470

p. 316*B.) Secondary explosions are the exception

Question 471

Which is NOT a correct statement

Answer 471

p. 342*C.) A large fire pattern will point to the area of origin

Question 472

Which would not likely be seen on noncombustible surfaces

Answer 472

p. 327*C.) Charring

Question 473

Which statement about interviews is NOT correct

Answer 473

p. 289*B.) Interviews should be delayed until there is sufficient time to conduct them

Question 474

What is the next step taken after the safety assessment at an explosion scene

Answer 474

p. 310*B.) Determine which damage is from the explosion and which is from the fire

Question 475

What type of fire pattern will be created when the fire has a low heat release rate and is near a vertical surface

Answer 475

p. 332*C.) Inverted-cone

Question 476

Which patterns are the result of fire burning downward through the floor surface above the joist

Answer 476

p. 339*D.) Saddle burns

Question 477

Which is responsible for the majority of damage in an Explosion

Answer 477

p. 312*D.) Blast-pressure-front positive phase

Question 478

Which is an important type of evidence for determining pre-explosion or post-explosion damage

Answer 478

p. 313*B.) Window glass

Question 479

What pieces of information should the investigator collect about interior contents that are found during the exterior examination of the scene

Answer 479

p. 306*D.) Who removed them and where they were located

Question 480

What happens to combustible surfaces as the hot-gas-layer passes over them

Answer 480

p. 333*D.) Charred

Question 481

What is always present when a backdraft occurs

Answer 481

p. 311*A.) Pre-explosion fires

Question 482

What type of fire pattern is often seen with leaks in natural gas pipes occur below the level of a floor

Answer 482

p. 333*B.) Inverted-cone

Question 483

What does the look of the lines of demarcation depend upon when an irregular pattern is created on the floor

Answer 483

p. 337*D.) Material on which the pattern is formed

Question 484

Which is most likely seen when the overpressure level is between 0 and 0 psi (9 kPa and 8 kPa)

Answer 484

p. 312*B.) Lightweight construction will suffer great damage

Question 485

What should be done when a leak is not readily apparent during the fuel-source analysis after a gas/vapor explosion

Answer 485

p. 317*A.) Leak test the entire gas piping system

Question 486

Which is NOT an item that is most susceptible to ignition from static

Answer 486

p. 381*D.) Solid fuels with a low surface-to-mass ratio

Question 487

Which type of witness answers questions about what they saw during a criminal trial

Answer 487

p. 412*D.) Fact

Question 488

Where can using the wrong fuel in solid fuel-powered equipment most often cause the appliance to fail due to overheating

Answer 488

p. 372*A.) At the floor

Question 489

In general what must occur for a solid to ignite

Answer 489

p. 382*A.) Turned into a vapor

Question 490

In general, what is done with witness interviews when completing the fire investigation report

Answer 490

p. 408*C.) Summarize the statements

Question 491

Which is most important when identifying the material that was first ignited when examining the fuel’s orientation

Answer 491

p. 382*C.) Vertical versus horizontal

Question 492

Which method of distribution should be avoided when a media release is being sent out

Answer 492

p. 405*C.) Mail

Question 493

To whom does Rule 26 most frequently apply to during civil Proceedings

Answer 493

p. 410*C.) Private investigators

Question 494

What type of search warrants are fire investigators allowed to use for routine fire investigations

Answer 494

p. 427*D.) Administrative

Question 495

What should the investigator do if there is false or misleading information in the reporters’ questions

Answer 495

p. 403*B.) Politely correct it

Question 496

What is the means by which the plaintiff obtains information from the opposing party to prove its allegation

Answer 496

p. 409*C.) Discovery

Question 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

Answer 497

p. 391-392*D.) Is there an abundance of personal items?

Question 498

What will the investigator need to rely on when aluminum wiring is present to determine the prefire connection quality

Answer 498

p. 375*A.) Damage patterns to screw heads

Question 499

Which is NOT a correct statement about reports written by fire investigators who are employed by a public agency

Answer 499

p. 405*B.) The reports are always treated as a sealed record

Question 500

Which is NOT a factor in the ignition of a material by a lit cigarette

Answer 500

p. 378*A.) Length of the cigarette