Chapter 4 Flashcards
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Define Fire
Chapter 4, pg78, Chemistry of Fire
Fire is a rapid, self-sustaining oxidation process accompanied by the evolution of heat and light in varying intensities.
At what temperature does fuel continue combustion without any external input of heat, becoming self-sustaining?
* Melting temperature
* Ignition temperature
* Combustion temperature
* Fire temperature
At what temperature does fuel continue combustion without any external input of heat, becoming self-sustaining?
* Melting temperature
* Ignition temperature
* Combustion temperature
* Fire temperature
Chapter 4, page 89, Chemistry of Fire
Cooking materials such as cooking oils, fats, and grease fall into which fire classification?
* Class D
* Class A
* Class C
* Class K
Cooking materials such as cooking oils, fats, and grease fall into which fire classification?
* Class D
* Class A
* Class C
* Class K
Chapter 4, page 99, Classification of Fires
Fire is a rapid, self-sustaining ________ process, accompanied by the evolution of heat and light in varying intensities.
* exothermic
* molecular
* endothermic
* oxidation
Fire is a rapid, self-sustaining process, accompanied by the evolution of heat and light in varying intensities.
* exothermic
* molecular
* endothermic
* oxidation
Chapter 4, page 86, Introduction
Flammable and combustible liquids fall into which fire classification?
* Class D
* Class A
* Class C
* Class B
Flammable and combustible liquids fall into which fire classification?
* Class D
* Class A
* Class C
* Class B
Chapter 4, page 99, Classification of Fires
In which stage has the fire run out of available fuel or oxygen?
* Free burning
* Incipient
* Flashover
* Decay
In which stage has the fire run out of available fuel or oxygen?
* Free burning
* Incipient
* Flashover
* Decay
Chapter 4, page 101, Classification of Fires
In which stage of fire are all available fuels in the fire’s perimeter burning?
* Incipient
* Free burning
* Decay
* Flashover
In which stage of fire are all available fuels in the fire’s perimeter burning?
* Incipient
* Free burning
* Decay
* Flashover
Chapter 4, page 100, Classification of Fires
In which stage of fire does the fire reach a point at which it no longer needs input heat from outside sources to continue burning?
* Free burning
* Flashover
* Decay
* Incipient
In which stage of fire does the fire reach a point at which it no longer needs input heat from outside sources to continue burning?
* Free burning
* Flashover
* Decay
* Incipient
Chapter 4, page 100, Classification of Fires
The relative density of vapor or gas as compared to air is its:
* specific gravity.
* vapor density.
* boiling point.
* flash point.
The relative density of vapor or gas as compared to air is its:
* specific gravity.
* vapor density.
* boiling point.
* flash point.
Chapter 4, page 93, Physics of Fire
The Steiner Tunnel test assesses smoke density and and is mandated for many commercial building materials.
* flame color
* flame burn
* flame reach
* flame spread
The Steiner Tunnel test assesses smoke density and and is mandated for many commercial building materials.
* flame color
* flame burn
* flame reach
* flame spread
Chapter 4, page 91, Physics of Fire
The transfer of heat by wavelengths of energy is which of the following methods of heat transfer?
* Conduction
* Convection
* Direct contact
* Radiation
The transfer of heat by wavelengths of energy is which of the following methods of heat transfer?
* Conduction
* Convection
* Direct contact
* Radiation
Chapter 4, page 97, Heat Transfer
The transfer of heat through a circulating medium, such as liquids or gases, is indicative of which of the following methods of heat transfer?
* Direct contact
* Radiation
* Convection
* Conduction
The transfer of heat through a circulating medium, such as liquids or gases, is indicative of which of the following methods of heat transfer?
* Direct contact
* Radiation
* Convection
* Conduction
Chapter 4, page 97, Heat Transfer
What are the two most common elements in fuels?
* Carbon and hydrogen
* Oxygen and hydrogen
* Carbon and oxygen
* Carbon and nitrogen
What are the two most common elements in fuels?
* Carbon and hydrogen
* Oxygen and hydrogen
* Carbon and oxygen
* Carbon and nitrogen
Chapter 4, page 88, Chemistry of Fire
What is the minimum temperature of a liquid at which it gives off sufficient vapors to form an ignitable mixture with air, although ignition will not be sustained?
* Flash point
* Volatility
* Boiling point
* Vapor density
What is the minimum temperature of a liquid at which it gives off sufficient vapors to form an ignitable mixture with air, although ignition will not be sustained?
* Flash point
* Volatility
* Boiling point
* Vapor density
Chapter 4, page 93, Physics of Fire
When the vapor pressure equals atmospheric pressure at the surface of the liquid, what has been reached?
* Boiling point
* Vapor density
* Specific gravity
* Flash point
When the vapor pressure equals atmospheric pressure at the surface of the liquid, what has been reached?
* Boiling point
* Vapor density
* Specific gravity
* Flash point
Chapter 4, page 92, Physics of Fire
Which fire classification deals with energized electrical equipment?
* Class D
* Class C
* Class K
* Class A
Which fire classification deals with energized electrical equipment?
* Class D
* Class C
* Class K
* Class A
Chapter 4, page 99, Classification of Fires
Which of the following can be absorbed by fuel and affects its ease of ignition?
* Arrangement
* Moisture
* Mass
* Continuity
Which of the following can be absorbed by fuel and affects its ease of ignition?
* Arrangement
* Moisture
* Mass
* Continuity
Chapter 4, page 90, Physics of Fire
Which of the following gas characteristics is the maximum concentration of gas or vapor in air above which it is not possible to ignite vapors?
* Vapor density
* Lower flammable limit
* Flammable range
* Upper flammable limit
Which of the following gas characteristics is the maximum concentration of gas or vapor in air above which it is not possible to ignite vapors?
* Vapor density
* Lower flammable limit
* Flammable range
* Upper flammable limit
Chapter 4, page 95, Physics of Fire
Which of the following gas characteristics is the minimum concentration of gas or vapor in air below which it is not possible to ignite the vapors?
* Vapor density
* Upper flammable limit
* Flammable range
* Lower flammable limit
Which of the following gas characteristics is the minimum concentration of gas or vapor in air below which it is not possible to ignite the vapors?
* Vapor density
* Upper flammable limit
* Flammable range
* Lower flammable limit
Chapter 4, page 95, Physics of Fire
Which of the following is not a factor affecting the rate at which solid fuels are pyrolized?
* Moisture content
* Overall cost
* Arrangement
* Mass
Which of the following is not a factor affecting the rate at which solid fuels are pyrolized?
* Moisture content
* Overall cost
* Arrangement
* Mass
Chapter 4, page 90, Physics of Fire
Which of the following is not considered a state of matter for fuel?
* Combustion
* Liquid
* Gas
* Solid
Which of the following is not considered a state of matter for fuel?
* Combustion
* Liquid
* Gas
* Solid
Chapter 4, page 88, Chemistry of Fire
Which of the following possible sources of heat involves the breaking down and recombination of molecules?
* Mechanical
* Nuclear
* Chemical
* Electrical
Which of the following possible sources of heat involves the breaking down and recombination of molecules?
* Mechanical
* Nuclear
* Chemical
* Electrical
Chapter 4, page 96, Heat and Temperature
Which of the following reactions includes the absorption of heat?
* Exothermic
* Oxidizing
* Endothermic
* Molecular
Which of the following reactions includes the absorption of heat?
* Exothermic
* Oxidizing
* Endothermic
* Molecular
Chapter 4, page 87, Fire Defined
Which of the following refers to the weight of a liquid as compared to the weight of an equal volume of water?
* Specific gravity
* Vapor pressure
* Volatility
* Miscibility
Which of the following refers to the weight of a liquid as compared to the weight of an equal volume of water?
* Specific gravity
* Vapor pressure
* Volatility
* Miscibility
Chapter 4, page 92, Physics of Fire
