Chapter 4- Quiz

Question 1

Which is an example of a self-sustaining chemical reaction? (144)

Answer 1

Flaming combustion

Question 2

Development of a fire in the incipient stage depends largely upon the: (146)

Answer 2

characteristics and configuration of the fuel involved.

Question 3

The total quantity of combustible contents of a building, space or fire area is referred to as the:

Answer 3

fuel load.

Question 4

Which element is included in the fire tetrahedron that is not part of the fire triangle model? (120)

Answer 4

Chemical chain reaction

Question 5

Which is a measure of heat energy transfer rate? (127)

Answer 5

Heat flux

Question 6

A fuel’s ______ is the total amount of thermal energy released when a specific amount of that fuel burns. (136)

Answer 6

heat of combustion

Question 7

Slower fire development in large compartments is due to the _______and the increased distance that radiated heat must travel from the fire to the contents that must be heated. (173)

Answer 7

oxygen deficient atmosphere

Question 8

The four stages of fire development are: (146)

Answer 8

incipient, growth, fully developed, and decay.

Question 9

Heat transfers from one body to another by three mechanisms: conduction, radiation, and: (131)

Answer 9

convection

Question 10

Most residential fires that develop beyond the incipient stage become: (151)

Answer 10

ventilation limited

Question 11

What is the primary oxidizing agent in most fires? (140)

Answer 11

Oxygen in the air

Question 12

In order to burn, fuel must be in a ____ state. (120)

Answer 12

gaseous

Question 13

Which statement about flow paths and ventilation in a structure is accurate? (162)

Answer 13

When firefighters make entry into a building, they establish new flow paths between the fire compartment and exterior vents of the building.

Question 14

Which type of fuel is difficult to extinguish using water as the only extinguishing agent? (139)

Answer 14

Liquids that are less dense (lighter) than water

Question 15

When a compartment fire is in ventilation-limited decay,can trigger flashover quickly. (152)

Answer 15

introduction of new oxygen

Question 16

The range of concentrations of fuel vapor and air within which combustion can occur is the: (143)

Answer 16

flammable (explosive) range.

Question 17

Which stage of fire occurs when all combustible materials in the compartment are burning at their peak heat release rate based on the available oxygen? (146)

Answer 17

Fully developed

Question 18

Which statement about smoke is accurate? (124)

Answer 18

Smoke has the potential to burn.

Question 19

What is the primary consideration affecting how easily solid fuels ignite? (140)

Answer 19

Surface-to-mass ratio

Question 20

If there are no openings for lateral movement during the growth stage of a fire, the hot gases released during combustion will fill the compartment: (150)

Answer 20

starting from the ceiling and filling down