FT105Q4
A stoichiometric reaction is:
A balanced reaction, where all the fuel is consumed.
There cannot be flaming fire unless:
A gas or vapor is burning
Class C fires are the result of:
A short circuit
Combustion can be defined as:
An exothermic
The color of the flames from burning alcohol is:
Blue
____ is the result of the incomplete combustion of a fuel where carbon and a single atom of oxygen are produced.
Carbon monoxide
____fires involve ordinary combustibles.
Class A
____ fires involve flammable liquids.
Class B
____ fires involve energized electrical equipment or wires.
Class C
The newest addition to the classification of fires using letters is:
Class K
____ is defined as a planned and controlled, self-sustaining chemical reaction between a fuel and oxygen with the evolution of heat and light.
Combustion
High-rise buildings built before World War II were built with truss construction and with drywall in the interior to provide fire resistance for the steel support structure of the building.
False
Smoldering combustion involves two phases: solid and liquid.
False
____ is a rapid, self-sustaining oxidation process that involves heat, light, and smoke in varying quantities.
Fire
An exothermic or heat-producing chemical reaction with flames occurring between a substance and oxygen is called ____.
Flaming combustion
The ____ stage has been reached when the maximum generation of heat and consumption of fuel and oxygen occur.
Fully developed
The ____ stage is reached when the fire increases its fuel consumption and heat generation.
Growth
The law of latent heat of vaporization tells fire fighters:
How much heat will be absorbed
The ____ stage is the point at which the four components of the fire tetrahedron come together and the materials reach their ignition temperature and the fire begins.
Ignition
The first stage of a fire is called the:
Ignition stage
The four stages of a fire are:
Ignition, growth, fully developed, and decay
____ is the process of breaking down a solid fuel into gaseous components when heated; also called thermal decomposition.
Pyrolysis
____ is the combined process of emission, transmission, and absorption of heat energy traveling through electromagnetic waves from an area of higher heat energy to an area of lower heat energy.
Radiation
____ is the ratio of the amount of moisture in a given volume of space to the amount that volume would contain if it were saturated.
Relative humidity
____ is the absence of flames with the presence of hot materials in the surface where oxygen diffuses into the surface of the fuel.
Smoldering combustion
____ is the temperature difference between the outside temperature of the building and the temperature inside the building.
Stack effect
An ideal burning situation or a condition where there is perfect balance between the fuel, oxygen, and end products is referred to as ____.
Stoichiometric
____ is the transfer of heat energy from the hot to the cold side of a medium by means of energy transfer from molecule to adjacent molecule, or atom to atom.
Conduction
Compartmentation refers to:
Construction areas in buildings that are considered safe.
The ____ stage has been reached when the fire has consumed all of the available fuel and the temperature begins to decrease as the fire reduces in intensity.
Decay
The most common type of flaming encountered by fire fighters is called:
Diffusive flaming
Spontaneous combustion:
Does not require an independent ignition source.
Fire has been classified in four ways: the type of combustion, the rate of fire growth, available ventilation, and the type of materials that are burning.
False
The four sides of the newest tetrahedron are:
Oxygen, heat, fuel, free radicals
The unburned products of combustion visible in smoke are ____.
Particulates
Firefighters can protect buildings from radiated heat by allowing water to run down the face of the building.
True
The process of combustion in enclosed compartments or rooms occurs in four sequential stages.
True
Particulates are:
Unburned products found in smoke
