CHAPTER 19 - ORIGIN AND CAUSE DETERMINATION

Question 1

Exact physical location where the heat source and fuel come in contact with each other and the fire begins

Answer 1

Point of origin

Question 2

The sequence of events that allow the ignition source and the material first ignited to come together

Answer 2

Fire cause

Question 3

Crime of willfully, maliciously, and intentionally starting an incendiary fire

Answer 3

Arson

Question 4

Continuous changes of possession of physical evidence that must be established in court to admit such material into evidence

Answer 4

Chain of custody

Question 5

The apparent and obvious design of burned material and the burning path of travel from a point of origin

Answer 5

Fire pattern

Question 6

A competent ignition source will have sufficient temp and energy and be in contact with the fuel long enough to raise it to its ignition temp

Answer 6

Competent ignition source

Question 7

History of the fire, beginning when the ignition source and the first fuel ignited meet at the area of origin and proceeding through the entire duration of fire spread through the scene

Answer 7

Ignition sequence

Question 8

Combustible material, such as rolled rags, blankets, news papers, or flammable liquid, often used in intentionally set fires in order to spread fire from one area to other points or areas

Answer 8

Trailer

Question 9

The general location where the ignition source and the material first ignited actually came together for the first time

Answer 9

Area or origin

Question 10

Materials or chemicals designed and used to start a fire

Answer 10

Incendiary device

Question 11

General term referring to anything that can taint physical evidence

Answer 11

Contamination

Question 12

Term that refers to evidence that is destroyed, damaged, altered, or otherwise not preserved by someone who has responsibility for the evidence

Answer 12

Spoliation

Question 13

It can be assumed that potentially leath concentrations of Unburned gasses such as carbon monoxide and hydrogen cyanide are not present at and area of origin. True or false?

Answer 13

False - assume they are present

Question 14

Move all debris when searching with or without orders to do so. True or false?

Answer 14

False - wait until orders are given

Question 15

Upward movement of heat causes less damage to floors than ceilings. True or false?

Answer 15

True

Question 16

Multiple areas of origin may not indicate intentionally set fires. True or false?

Answer 16

False - it may indicate intentionally set fires

Question 17

When burning on flat ground with a consistent fuel source and no wind, fire burns in equal directions. True or false?

Answer 17

True

Question 18

During rescue operations, firefighters should cut the door post on a hybrid or electric car. True or false?

Answer 18

False – they may carry high electrical charge

Question 19

The absence of an obvious ignition source may help eliminate some causes and allow investigation to focus on others. True or false?

Answer 19

True

Question 20

When observing conditions, look for obsolete equipment or inventory. True or false?

Answer 20

True

Question 21

All firefighters can determine what is and is not evidence. True or false?

Answer 21

False - only if you’re qualified/certified

Question 22

Evidence must remain undisturbed except when absolutely necessary for extinguishment of fire. True or false?

Answer 22

True

Question 23

Protecting the scene and delaying overhaul operations should be done when:

Answer 23

Origin cannot be accurately determine

Question 24

Terrain/typography affects the rate and direction of spread and spread in _____fires.

Answer 24

Exterior

Question 25

What type of fire is deliberately set?

Answer 25

Incendiary

Question 26

Limiting access to a scene also provides___for firefighters

Answer 26

Safety

Question 27

What can occur even if a scene is secured

Answer 27

Contamination

Question 28

What is defined as that is destroyed, damaged, altered, or otherwise not preserved

Answer 28

Spoliation