RIA NFPA 921 Fire Investigation 2

Question 1

According to NFPA 921, what is the primary purpose of fire pattern analysis?

Accepted Answer

To identify the origin and direction of fire travel

Answer

NFPA 921 defines fire pattern analysis as the process used to identify origin and direction of fire travel based on physical evidence.

Question 2

In fire investigation, 'arc mapping' is used primarily to:

Accepted Answer

Locate electrical arc damage to determine fire spread direction

Answer

Arc mapping identifies electrical arcing locations to help determine the sequence of events and fire progression through a structure.

Question 3

Which of the following best describes a 'V-pattern' in fire investigation?

Accepted Answer

A char pattern on walls indicating upward fire spread from a low point

Answer

V-patterns appear on walls when fire burns upward and outward from a point of origin, with the narrow base pointing toward the heat source.

Question 4

Per NFPA 921, which type of evidence should be collected first at a fire scene?

Accepted Answer

Transient and perishable evidence

Answer

NFPA 921 instructs investigators to prioritize transient and perishable evidence because it is most easily lost or destroyed.

Question 5

What does the term 'fire spread' refer to in NFPA 921?

Accepted Answer

The movement of fire from its origin to other locations

Answer

Fire spread describes how fire moves from the point of origin to adjacent areas, driven by heat transfer mechanisms.

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