Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ff 1 > ch 5 test quiz > Flashcards

ch 5 test quiz Flashcards

1
Q

Which is a component of the fire triangle?

A

Heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Heat transfer in the form of invisible electromagnetic waves is called:

A

radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The lowest temperature at which a liquid or solid produces enough flammable vapor to burn briefly is its:

A

flash point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which is a commonly used method of extinguishing Class B fires?

A

Excluding the oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the percentage of oxygen normally found in air?

A

21

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which stage of fire results from decreasing oxygen and/or fuel supply?

A

Decay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the process of heating a solid fuel so that it liberates gaseous fuel vapors?

A

Pyrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The rapid chemical process in which the combination of a substance with oxygen produces heat and light is:

A

combustion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which form of heat transfer travels in all directions?

A

Thermal radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

A gas with a vapor density of _____ will rise in air.

A

0.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which is a component of a BLEVE?

A

A pressurized flammable liquid vessel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the second stage of fire development?

A

Growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Flashover is a rapid transition into the ___________ stage of fire development.

A

fully developed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the area within a structure where heat, smoke, and air move from areas of higher pressure to lower pressure?

A

Flow path

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Friction is a form of __________ energy

A

mechanical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which state must a fuel be in for combustion to take place?

A

Vapor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the relationship between resistance and heat as electricity flows through a wire?

A

As resistance increases, heat increases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which toxic gas is commonly produced by fire?

A

Hydrogen cyanide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

In solid materials, energy moves directly from one molecule to another in which form of heat transfer?

A

Conduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the vapor density of air?

A

1.0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which term is used interchangeably with flammability range?

A

Explosive limit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Which class of fire involves ordinary solid combustibles such as wood and paper?

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Fires involving combustible cooking oils and fats are Class:

A

K

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What does smoke puffing in and out of a structure indicate?

A

Backdraft conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Which is a common indicator of backdraft conditions?

A

Smoke that appears to be pressurized

26
Q

What is another term for fire point?

A

Flame point

27
Q

Which geometric figure is used to represent the four elements required for a self-sustaining fire?

A

Tetrahedron

28
Q

A chemical reaction that produces heat is:

A

exothermic.

29
Q

Heat traveling from one end of a steel beam to the other end is an example of:

A

conduction.

30
Q

Which is the flash point of gasoline?

A

–45ºF (–43ºC).

31
Q

What is the lowest temperature at which a fuel-air mixture will ignite in the presence of air and continue to burn?

A

Ignition temperature

32
Q

Flammable liquid fires are Class:

A

B

33
Q

Class C fire involves:

A

energized electrical equipment

34
Q

The sudden introduction of air into an oxygen-depleted, superheated space may result in:

A

backdraft.

35
Q

An endothermic reaction is one that:

A

absorbs heat.

36
Q

What is the smallest unit of matter?

A

An atom

37
Q

Which effect on fire development is a result of modern construction techniques and materials?

A

Greater frequency of ventilation-limited fires

38
Q

The neutral plane is most directly associated with:

A

thermal layering.

39
Q

In which process is a new compound created from the combination of oxygen and another substance?

A

Oxidation

40
Q

The movement of heated gases in a fire is an example of which form of heat transfer?

A

Convection

41
Q

The majority of fires are extinguished by which method?

A

Cooling the fuel

42
Q

Which hazard is of particular concern when attacking a Class C fire?

A

Electrical injury

43
Q

What is the term for temperature in a room reaching the point where all exposed surfaces in room ignite?

A

Flashover

44
Q

What is the lowest temperature at which a liquid produces enough vapor to sustain a continuous fire?

A

Fire point

45
Q

Which term refers to the weight of a gas compared to air?

A

Vapor density

46
Q

Turbulent smoke is an indication of impending:

A

flashover.

47
Q

Which situation is indicated when you open a door and the smoke exits through the top half of the door and clean air enters through the bottom half?

A

The fire is on the same level as the door.

48
Q

Which situation is indicated if you open a door and the smoke rises and the opening clears out?

A

The fire is above the level of the door.

49
Q

Which situation is indicated when you open a door and the smoke thins, but the smoke still fills the door?

A

The fire is below the level of the door.

50
Q

Matter exists in _____ states.

A

3

51
Q

Which form of energy causes spontaneous heating of a pile of linseed oil-soaked rags?

A

Chemical

52
Q

Heat rising within a structure is primarily caused by which form of heat transfer?

A

Convection

53
Q

What is the term for the spontaneous ignition of hot gases at the upper level of a room?

A

Rollover

54
Q

Smoke produced by some solid materials when they are first heated is typically which color?

A

White

55
Q

The majority of civilian fire injuries occur in which type of occupancy?

A

Residential

56
Q

The measure of the rate of transfer of heat from one surface to another is:

A

heat flux.

57
Q

Which material has the highest thermal conductivity?

A

Copper

58
Q

Movement of hot fluid is an example of which method of heat transfer?

A

Convection

59
Q

The volume of space in which the movement of cooler air enters through an inlet vent and the space where hot gases and smoke exit through an exhaust outlet is the:

A

flow path.

60
Q

Which is one of the three factors in solid fuel configuration?

A

Surface-to-mass ratio

ff 1 (61 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions