The transition phase in the development of a contained fire in which surfaces exposed to the thermal radiation reach ignition temperature simultaneously.
What is a flashover
100
Heat transfer by electromagnetic waves
What is radiation
100
Measure of the degree of molecular activity of a material compared to a reference point - measured in degrees Farenheit or degrees Celsius
What is temperature
100
Method of firefighting that relies on a stream of water to cool the fuel surfaces involved in fire when applied directly onto them where accessible
What is a direct attack
100
The movement of hot gases between the fire and the exhaust openings and the movement of air towards the fire
What is the flow path
200
A sudden deflagration caused by an admission of air into an accumulation of fire gases containing significant proportions of partial combustion products and unburned pyrolysis products
What is a backdraft
200
Heat transfer by the movement of liquids
What is convection
200
A form of energy characterized by vibration of molecules and capable of initiating and supporting chemical changes and changes of state - it is the energy needed to change the temperature of an object
What is heat energy
200
Method of attack in which water is applied from an exterior position prior to making entry into the structure
What is a transitional attack
200
A chemical reaction in which the involved substance gives off heat
What is an exothermic reaction
300
Intermittent flaming in the gas layers at ceiling level
What is a rollover (flameover)
300
Heat transfer within solids or between contacting solids
What is conduction
300
The rate at which fire releases energy, measured in units of Watts (W), which is an International System Unit equal to one Joule per second - also known as power
What is heat release rate
300
A method of applying water fog onto super-heated surfaces in the fire compartment to create a mass of steam that displaces the oxygen to smother the fire
What is an indirect attack
300
The separation between the underpressure and overpressure regions
What is the neutral plane
400
A sudden eruption from a closed compartment - usually a result of oxygen entering the compartment from a small opening or leak (similar to backdraft)
What is a smoke explosion
400
DAILY DOUBLE!
2 laps around the station!
What is GOOD LUCK!
400
The rate of heat energy transferred per surface unit area - kW/m2
What is heat flux
400
Inerting the air feeding the flame by reducing the oxygen partial pressure by the addition of an inert gas
What is flame inerting
400
The quantity of heat that is required to raise the temperature of one pound of water one degree Farenheit - a measure of heat quantity
What is a British Thermal Unit (BTU)
500
The point beyond stability where ventilation may cause more energy to be released in the compartment than can be lost through vent openings that may lead to a ventilation-induced flashover
What is thermal runaway
500
A 'cold' firefighter entering a 'hot' structure will typically be exposed to heat transferred by this mode first
What is convective heat
500
Temperature inside a post-flashover room fire
What is >1112 degrees Farenheit, >600 degrees Celsius
500
The minimum amount of water-flow needed to fully suppress a fire while still in a state of development or possibly during a progressive decline into its decay stage
What is critical flow rate
500
The temperature to which a substance must be heated to initiate self-sustained combustion