Fire Classifications Quiz

Bunker boots: Protect the feet from cuts and abrasions from the top and from the ______.

Eye protection: Protects the wearer’s eyes from ______ matter.

Hearing Protection: Protects the ears from excessive ______.

Respiratory Protection: Protects against heated gases as well as toxic and oxygen-deficient ______.

Personal Alert Safety System (PASS): Built into a breathing apparatus or attached to a ______.

During an incident, rescuers may be exposed to biological, chemical, electrical, and ______ hazards.

In the burning process, the liberated particles may have an electrical ______ that either attracts or repels other particles.

The area between vapour or gases and the visible flame is known as the flame ______.

Above the flame interface, oxygen molecules exist in sufficient number to produce energy reactions, resulting in the creation of light in the form of ______.

The area above the flame interface is fed by the oxygen drawn into the fire as air currents move into the void created by the rising heated vapours or ______.

During the burning process, the molecular structure of the material is broken down, and the released atoms combine with other radicals and elements to form new ______.

Most of the visible smoke consists of unburned carbon particles because carbon is one of the elements most difficult to ______.

Signs of flashover are:  Dense black smoke  Fire gases begin to fill the fire area  Rollover is visible 10-11 Backdraft usually occurs during the decay phase when a fire is ________.

Backdraft occurs when there is insufficient ________ in the structure.

Backdraft can lead to a very rapid burning of unburned gases, potentially causing an ________.

Impending backdraft can be identified by signs such as little or no visible ________.

Thermal layering is caused by ________ and is the tendency for gases to form into layers according to their temperatures.

Thermal layering is disrupted when water is applied directly into the layer without proper ________.

Additional fuel is ignited and the fire grows in ______.

Flashover can occur spontaneously and rapidly with a release of dangerous amounts of heat and into the next phase of the ______.

During the fully developed phase, oxygen is consumed rapidly and the heat produced is at its ______.

All combustible materials in the compartment are burning and producing large volumes of fire ______.

In the decay phase, flame may cease to exist and the fuel and/or oxygen are nearly ______.

Rollover occurs when unburned combustible gases that were released during the ignition or growth phase of a fire accumulate at the ______.

Toxic Smoke (fire gases) is made up of the various gases produced during the combustion process. A few examples are carbon monoxide, hydrogen cyanide, and ______.

Fires are classified into five categories of fire based on important properties, such as the materials combusting and the means of extinguishment. Class “A” - Fires involve ordinary combustible materials, such as paper, wood, and ______.

Class “B” – Fires involve flammable liquids such as gasoline, kerosene, and ______.

Extinguishing agents for Class “B” fires include carbon dioxide, dry chemical, and ______ that can interrupt the chemical chain reaction, exclude oxygen, and inhibit the release of combustible vapors.

Class “C” – Fires involve energized electrical equipment. A typical extinguishing agent is ______.

Class “D” - Fires involve combustible metals such as magnesium, potassium, lithium, titanium, and ______.