CFI Fire Investigation Reporting & Documentation 3

Question 1

When an investigator uses the term 'undetermined' as the cause of fire, it means:

Accepted Answer

A fire cause cannot be proven to the exclusion of all others with available evidence

Answer

An 'undetermined' cause classification is appropriate and scientifically valid when the available evidence does not support a specific cause to a reasonable degree of certainty.

Question 2

Which of the following is an example of a 'competent ignition source' that must be documented in a fire report?

Accepted Answer

A malfunctioning electrical outlet with sufficient heat energy to ignite nearby fuel

Answer

A competent ignition source must have sufficient energy to raise a fuel to its ignition temperature; a malfunctioning outlet can generate arcing heat meeting this threshold.

Question 3

In a fire investigation report, the 'origin' is defined as:

Accepted Answer

The general location or precise point where a fire began

Answer

The origin is the general location or specific point where combustion first started, which may or may not be the area of greatest damage.

Question 4

What is the purpose of including a timeline in a fire investigation report?

Accepted Answer

To establish chronological sequence of events that led to and followed the fire

Answer

A timeline establishes the chronological sequence of relevant events, helping correlate witness accounts, alarm activations, and fire development to support cause and origin conclusions.

Question 5

When documenting electrical evidence in a fire report, which finding would support an electrical cause hypothesis?

Accepted Answer

Beaded copper conductors found at the origin with primary melting characteristics

Answer

Beaded copper conductors with primary melting characteristics (rounded, smooth beads) indicate electrical arcing occurred before the fire, supporting an electrical ignition hypothesis.

(CFI) Certified Fire Investigator Practice Test

(CFI) Certified Fire Investigator Practice Test

CFI Fire Investigation Reporting & Documentation 3