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55 Cards in this Set

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Fire cause classification that includes fires for which the cause has not been or cannot be proven

Undetermined

Classification for liquid fuels including both flammable and combustible liquids

Ignitable liquid

A term used to describe evidence that may have been altered from its original state

Contaminated

Where does most fires, fire deaths, and injuries occur?

Residential occupancies

If a fire intensifies in a short period of time, what does it possible indicate?

The use of an accelerant

What might charring on the underside of a low horizontal surface, such as a tabletop, indicate?

There was a pool of a flammable liquid

What does an inverted cone pattern on a wall indicate?

Flammable liquid was used to start the fire

What might have been used if the fire rekindles when water is applied?

Accelerant

How can the cause of a fire be classified?

Incendiary or Accidental

What term is used to describe a device or mechanism that is used to start a fire?

Incendiary device

In most jurisdictions, who determines the cause of the fire?

Chief of the fire department

What does a charred V-pattern on a wall indicate?

Fire spread up and out from an unknown material at the base of the V

Legal term that describes the process of maintaining continuous possession and control of evidence from the time it is discovered until it is presented in court

"Chain of custody"

What is one of the first steps in a fire investigation?

Identifying the point of origin

Legal term used to describe the paperwork or documentation describing the movement, storage and custody of evidence, such as the record of possession of a gas can from a fire scene

Chain of custody

An ignition source that can ignite a fuel under existing conditions at the time of the fire. It must have sufficient heat and be in close enough proximity to the fuel for a sufficient amount of time to ignite the fuel

Competent ignition source

The thickness of the layer of a material that has been consumed by a fire. The depth of char on wood can be used to help determine the intensity of a fire at a specific location

Depth of char

Combustible materials (rolled rags, blankets, and newspapers or ignitable liquids) that are used to spread fire from one point or area to other points or areas, often used in conjunction with an incendiary device

Trailers

What might an arsonist may place to hinder the efforts of fire fighters?

Obstacles

What should be preserved as evidence?

Clothing removed from any victim

What items should be noted?

Location of any victims found in building

What signs are helpful in identifying the point of origin?

Smoke residue


Burn patterns

When does an ignition source comes into contact with a fuel supply?

At the point of origin

Where does the fire investigation process usually begin?

With examination of the building's exterior

What can provide valuable clues at the scene?

Appearance and behavior of people

What does the cause and origin investigation determine?

Where, why and how a fire originated

What stage of the fire is the most evidence often found?

During salvage and overhaul phases of the fire

What is the most important reason for investigating accidental fires?

Prevent future fires

What does most arsonists do to the shades and windows of structures they burn?

Close them

Where is charring usually the deepest?

Usually at point of origin

What does the color of smoke often indicate?

What is burning

A pathological fire setter

Pyromaniac

The thickness of the layer of material that has been consumed by fire. On wood, this can be used to help determine the intensity of a fire at a specific location

Depth of char

A person who deliberately sets a fire to destroy property with criminal intent

Arsonist

A series of fires started by an arsonist who sets three or more fires at separate locations, with no emotional cooling off period between fires

Spree arson

A term used to describe evidence that may have been altered from its original state

Contaminated

A series of fires set by the same offender, with a cooling off period between fires

Serial arson

A legal term used to describe the paperwork or documentation describing the movement, storage, and keeping of evidence, such as the record of possession of a gas can from a fire scene

Chain of custody

A fire that is intentionally ignited under circumstances in which the person knows that the fire should not be ignited

Incendiary

Combustible materials (such as rolled rags, blankets, and newspapers or ignitable liquid) that are used to spread fire from one point or area to other points or areas, often used in conjunction with an incendiary device

Trailers

Arson in which an offender sets three or more fires at the same site or location during a limited period of time

Mass arson

Fire cause classification that includes fires with a proven cause that does not involve a deliberate human act

Accidental

The crime of maliciously and intentionally, or recklessly, staring a fire or causing an explosion

Arson

How can a fire be caused?

Either by act or by omission


Act - Igniting a piece of paper


Omission - Leaving a pot of grease unattended on a hot stove

How can the cause of the fire be classified?

Incendiary or accidental


Incendiary - intentionally ignited


Accidental - Not involve a deliberate human act

How is arson classified?

Arson is an incendiary cause


Incendiary - intentionally ignited



How should fire fighters always consider a fire?

To have an undetermined cause until the specific cause is established

Where does most structural fires occur?

Structural occupancies

What is the leading cause of fires in the home?

Cooking

Combustible materials that are used to spread fire from one point or area to other points or areas

Trailer

The crime of maliciously and intentionally, or recklessly, starting a fire or causing an explosion

Arson

What is the fire-cause classification that includes fires that are deliberately set?

Incendiary

Arson in which an offender sets three or more fires at the same site or location during a limited period of time

Mass arson

What type of evidence is where alleged facts are proven by deduction or inference from other facts that were observed directly?

Circumstantial

What pattern might indicate a short duration fire that does not spread horizontally from the point of origin?

Inverted cone or Inverted V pattern