Brainscape's Knowledge GenomeTM

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


See full index

Initial Response Strategy And Tactics Second Edition > Chapter 1: Fire Dynamics > Flashcards

Chapter 1: Fire Dynamics Flashcards

1
Q

Firefighters should have a_____understanding of combustion, fire, heat, and temperature.

A

Scientific

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

A chemical process of oxidation that occurs at a rate fast enough to produce heat.

A

Combustion

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

A rapid oxidation process.

A

Fire

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

Measure of the average kinetic energy.

A

Temperature

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

_____ are not combustible but will support or enhance combustion.

A

Oxidizers

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

__________ Is a chemical reaction involving the combination of an oxidizer, such as oxygen in the air, with other materials.

A

Oxidation

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

Rust, smoldering fire, methane burning, and explosion are all forms of what?

A

Oxidation

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

The energy that a moving object possesses.

A

Kinetic energy

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

Energy is measured in?

A

Joules (J)

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

Fire is an __________ Chemical reaction that releases energy in the form of heat and sometimes light.

A

Exothermic

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

Converting water from a liquid to a gas requires the input of energy resulting in an?

A

Endothermic reaction

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

Exothermic reactions release energy while endothermic reactions?

A

Absorb energy

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

Fire tetrahedron

A

Reducing agent (fuel)
Heat
Oxidizing agent (oxygen)
Chemical chain reaction

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

Fire must be in a____state to Burn.

A

Gaseous state

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

The chemical decomposition of a solid material by heating (Burning and turning the solid into a gaseous state)

A

Pyrolysis

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

Most common form of ignition

A

Piloted ignition

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

Occurs without any external flame or spark to ignite the fuel gases or vapors. The fuel surface heats up on its own and creates a combustion reaction.

A

Auto ignition

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

Smoke is a product of?

A

Incomplete combustion

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

_____Is a toxic in flammable products of the incomplete combustion of organic materials.

A

Carbon monoxide (CO)

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

CO2

A

Carbon dioxide

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

What does the acronym (HCN)mean?

A

Hydrogen cyanide

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

Colorless,toxic, and flammable liquid until it the reaches 79°F above that temperature it becomes a gas with a faint odor similar to bitter almonds.

A

Hydrogen cyanide

23
Q

HCN is__ times more toxic than CO

A

35

24
Q

____________ Is a product of complete combustion of organic materials.

A

Carbon dioxide (CO2)

25
Q

Neither supports combustion or burns and is used in portable fire extinguishing class B or C fires by smothering or displacing the oxygen.

A

(CO2)

26
Q

The Tendency or capacity of a liquid or gas to remain afloat or rise.

A

Buoyant

27
Q

____Is the measurement of the average kinetic energy in a particular sample of matter.

A

Temperature

28
Q

The boiling point of water is?

A

212° Or 100°C

29
Q

____Occurs when the material is heated as a result of direct contact with the heat source.

A

Conduction

30
Q

In the fire environment, __________usually involves the transfer of heat to the movement of hot smoke and fire gases.

A

Convection

31
Q

The transfer of energy through electromagnetic waves.

A

Radiation

32
Q

Radiation is a common cause of_____fires.

A

Exposure fires

33
Q

__________ is the rate at which energy transfers.

A

Power

34
Q

The minimum temperature at which a liquid gives all sufficient vapors to ignite.

A

Flash point

35
Q

_________ the temperature at which a pilot ignition of sufficient vapors will begin sustain combustion.

A

Fire point

36
Q

Four stages of fire development

A
  • Incipient stage- Ignition
  • Growth stage- More fuel becomes involved in the production of heat and smoke increase
  • Fully developed stage- The fire is consuming the maximum amount of oxygen that it can.
  • Decay stage- The heat release rate begins to decline
37
Q

Rapid transition from the growth stage to the fully develop stage.

A

Flash over

38
Q

Instantaneous explosion or rapid burning of superheated gases.

A

Backdraft

39
Q

Doing flashover the environment of the room changes from a cooler condition to a____.

A

Single layer

40
Q

Flash over occurs when the room temperature reaches?

A

1100°F

41
Q

A significant indicator of flashover is?

A

Roll over

42
Q

Roll over generally proceeds_____, but it may not always result in_____.

A

Flash over

43
Q

The auto ignition temperature of (CO) is approximately.

A

1100°F

44
Q

Hi neutral plane is an indicator of what stage of a fire?

A

Early stages of development

45
Q

Mid neutral plane is an indicator of what stage of a fire?

A

Advanced growth stage

46
Q

Low neutral plane is an indicator of what stage of a fire?

A

Approaching flash over or under ventilated. May indicate that the fire is reaching back draft conditions.

47
Q

Air consist of what percent oxygen?

A

21 percent

48
Q

The tendency of gases to form into layers according to temperature, gas density, and pressure.

A

Thermal layering

49
Q

The interface between the hot gas layers and cooler layer of air is commonly referred to as?

A

The neutral plane

50
Q

What neutral plane May indicate that the fire is an early stages of development?

A

High neutral zone

51
Q

This neutral plane could indicate that the compartment has not yet ventilated or that flash over is approaching

A

Mid neutral zone

52
Q

What neutral plane may indicate that the fire is reaching back draft conditions?

A

Low neutral plane

53
Q

What is the critical temperature for Steel trusses?

A

1000°F

Initial Response Strategy And Tactics Second Edition (6 decks)

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