Fire Investigator Exam Questions and
Verified Detailed Answers | Graded A+
The presence of a thick, oily soot on glass, including hydrocarbon residues, is
proof of the presence of: - ✔✔incomplete combustion
The most important activity by the fire investigator in preparation for an
interview is: - ✔✔developing a thorough understanding of all facets of the
investigation
Persons interviewed in custodial setting should be advised of their_______
rights - ✔✔miranda
Regarding the investigation section of the investigation report, how is a
recorded interview included? - ✔✔A transcript of the interview should be
included
Which is a Miranda right? - ✔✔Remain Silent
______________ diagrams can be used to show the direction of fire travel -
✔✔Vector
The type of diagram that uses arrows to depict an investigators interpretation of
flame or heat spread is commonly referred to as a _______ diagram - ✔✔Vector
The room of area where a fire began defines the - ✔✔area of origin
1|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,Constructing a depth-of-char grid diagram and plotting on graph paper to show
points of equal char depths may display - ✔✔source and form of heat ignition
A wide V pattern at the base of a fire is a sign that the - ✔✔pattern increased
over time as the fire spread
The purpose of fire scene reconstruction is to recreate the state that existed
prior to the fire, allowing the investigator to: - ✔✔make a more accurate origin
analysis
Arson is defined as - ✔✔the malicious burning of another person's house
What kind of service would a forensic lab provide - ✔✔Latent fingerprints
The predominant service that a laboratory provides to fire investigators is the
analysis of fire debris to: - ✔✔identify suspected volatile accelerants
The term, incendiary fire, is defined as - ✔✔a deliberately set fire that the
person knows should not be ignited
Electrical heat energy in the form of an arc between oppositely charged
conductors best defines - ✔✔static-electrictiy
what type of service or expertise would an attorney provide - ✔✔legal
assistance
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©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, releasing investigative findings to the media can be a challenge because they -
✔✔either support or complicate the work of the investigation
what should be included in the summary section of an investigation report -
✔✔names, addresses, and statements of witnesses
Which statement concerning report writing is true - ✔✔be sure the report is
complete and all facts are reported accurately
A goal of every fire investigation is to produce_____ documents, samples,
statements, information, data, and _______________ - ✔✔reliable, conclusions
To qualify as an expert witness you must: - ✔✔possess special knowledge,
training, and experience in the area of expertise
Discovery is the process occurring during the __________ phase of a legal
proceeding - ✔✔pretrial
Expert testimony regarding the origin and cause determination of a fire must
be: - ✔✔based on scientific knowledge, the accuracy and reliability of
conclusions
The fire cause classification which involves a deliberate act is determined to be:
- ✔✔incendiary
3|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Verified Detailed Answers | Graded A+
The presence of a thick, oily soot on glass, including hydrocarbon residues, is
proof of the presence of: - ✔✔incomplete combustion
The most important activity by the fire investigator in preparation for an
interview is: - ✔✔developing a thorough understanding of all facets of the
investigation
Persons interviewed in custodial setting should be advised of their_______
rights - ✔✔miranda
Regarding the investigation section of the investigation report, how is a
recorded interview included? - ✔✔A transcript of the interview should be
included
Which is a Miranda right? - ✔✔Remain Silent
______________ diagrams can be used to show the direction of fire travel -
✔✔Vector
The type of diagram that uses arrows to depict an investigators interpretation of
flame or heat spread is commonly referred to as a _______ diagram - ✔✔Vector
The room of area where a fire began defines the - ✔✔area of origin
1|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,Constructing a depth-of-char grid diagram and plotting on graph paper to show
points of equal char depths may display - ✔✔source and form of heat ignition
A wide V pattern at the base of a fire is a sign that the - ✔✔pattern increased
over time as the fire spread
The purpose of fire scene reconstruction is to recreate the state that existed
prior to the fire, allowing the investigator to: - ✔✔make a more accurate origin
analysis
Arson is defined as - ✔✔the malicious burning of another person's house
What kind of service would a forensic lab provide - ✔✔Latent fingerprints
The predominant service that a laboratory provides to fire investigators is the
analysis of fire debris to: - ✔✔identify suspected volatile accelerants
The term, incendiary fire, is defined as - ✔✔a deliberately set fire that the
person knows should not be ignited
Electrical heat energy in the form of an arc between oppositely charged
conductors best defines - ✔✔static-electrictiy
what type of service or expertise would an attorney provide - ✔✔legal
assistance
2|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, releasing investigative findings to the media can be a challenge because they -
✔✔either support or complicate the work of the investigation
what should be included in the summary section of an investigation report -
✔✔names, addresses, and statements of witnesses
Which statement concerning report writing is true - ✔✔be sure the report is
complete and all facts are reported accurately
A goal of every fire investigation is to produce_____ documents, samples,
statements, information, data, and _______________ - ✔✔reliable, conclusions
To qualify as an expert witness you must: - ✔✔possess special knowledge,
training, and experience in the area of expertise
Discovery is the process occurring during the __________ phase of a legal
proceeding - ✔✔pretrial
Expert testimony regarding the origin and cause determination of a fire must
be: - ✔✔based on scientific knowledge, the accuracy and reliability of
conclusions
The fire cause classification which involves a deliberate act is determined to be:
- ✔✔incendiary
3|Page
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
