IFSTA Ch 5 Fire Behavior UPDATED
ACTUAL Exam Questions and CORECT
Answers
The mixture of vapor to air that will ignite when subjected to an ignition source is known as the:
- CORRECT ANSWER - explosive range
Conservative estimates say that the presence of a screen in a window reduces the airflow by
nearly __________ percent. - CORRECT ANSWER - 50
The phase of fire characterized by temperature decline and diminishing fire is called: -
CORRECT ANSWER - decay
The transfer of heat by the movement of gases or liquid is known as: - CORRECT
ANSWER - convection
Heat transfer that takes place in the form of electromagnetic waves is known as: - CORRECT
ANSWER - radiation
When the colder of two bodies in contact absorbs heat until both objects are the same
temperature, __________ has taken place. - CORRECT ANSWER - heat transfer
Heat can travel throughout a burning building by one or more of the following methods: -
CORRECT ANSWER - conduction, radiation, and convection
When the concentration of a gas is within the range where it can ignite, it is said to: - CORRECT
ANSWER - be within its flammable/explosive range
Which stage of fire releases the maximum amount of heat for the available fuel and produces
large volumes of fire gases? - CORRECT ANSWER - Fully developed
, The principle which most closely describes how water extinguishes fire is: - CORRECT
ANSWER - reduction of temperature
In the fire tetrahedron, which of the following is the reducing agent? - CORRECT
ANSWER - Fuel
Combustion is the result of a __________ reaction. - CORRECT ANSWER - chemical
At room temperature, combustion is supported at oxygen concentrations as low as __________
percent. - CORRECT ANSWER - 14
A fire in the presence of a higher-than-normal concentration of oxygen will: - CORRECT
ANSWER - burn faster than normal
The three physical states of fuel are: - CORRECT ANSWER - solid, liquid, and gas
__________ is described as the point-to-point transmission of heat energy. - CORRECT
ANSWER - conduction
The chemical decomposition of a substance through the action of heat best defines: - CORRECT
ANSWER - pyrolysis
Which of the following are not products of combustion. - CORRECT ANSWER - convection,
conduction, radiation, and direct contact
__________ is the transition between the growth and fully developed stages of fire - CORRECT
ANSWER - flashover
ACTUAL Exam Questions and CORECT
Answers
The mixture of vapor to air that will ignite when subjected to an ignition source is known as the:
- CORRECT ANSWER - explosive range
Conservative estimates say that the presence of a screen in a window reduces the airflow by
nearly __________ percent. - CORRECT ANSWER - 50
The phase of fire characterized by temperature decline and diminishing fire is called: -
CORRECT ANSWER - decay
The transfer of heat by the movement of gases or liquid is known as: - CORRECT
ANSWER - convection
Heat transfer that takes place in the form of electromagnetic waves is known as: - CORRECT
ANSWER - radiation
When the colder of two bodies in contact absorbs heat until both objects are the same
temperature, __________ has taken place. - CORRECT ANSWER - heat transfer
Heat can travel throughout a burning building by one or more of the following methods: -
CORRECT ANSWER - conduction, radiation, and convection
When the concentration of a gas is within the range where it can ignite, it is said to: - CORRECT
ANSWER - be within its flammable/explosive range
Which stage of fire releases the maximum amount of heat for the available fuel and produces
large volumes of fire gases? - CORRECT ANSWER - Fully developed
, The principle which most closely describes how water extinguishes fire is: - CORRECT
ANSWER - reduction of temperature
In the fire tetrahedron, which of the following is the reducing agent? - CORRECT
ANSWER - Fuel
Combustion is the result of a __________ reaction. - CORRECT ANSWER - chemical
At room temperature, combustion is supported at oxygen concentrations as low as __________
percent. - CORRECT ANSWER - 14
A fire in the presence of a higher-than-normal concentration of oxygen will: - CORRECT
ANSWER - burn faster than normal
The three physical states of fuel are: - CORRECT ANSWER - solid, liquid, and gas
__________ is described as the point-to-point transmission of heat energy. - CORRECT
ANSWER - conduction
The chemical decomposition of a substance through the action of heat best defines: - CORRECT
ANSWER - pyrolysis
Which of the following are not products of combustion. - CORRECT ANSWER - convection,
conduction, radiation, and direct contact
__________ is the transition between the growth and fully developed stages of fire - CORRECT
ANSWER - flashover
