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Captains test 2024 > (Fire Fighter Skills) Chapter 5 Fire Behavior > Flashcards

(Fire Fighter Skills) Chapter 5 Fire Behavior Flashcards

1
Q

____ - is a rapid chemial process that produces heat and usually light
A. Fire
B. Combustion
C. Ignition
D. Gas

A

A. Fire

Fire Fighter Skills 159

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2
Q

According to FireFighter Skills what are the three states of matter?
A. Solid, Liquid, Plasma
B. Gas, liquids, Matter
C. Solid, Liquid, Gas
D. Pass, Present, Future

A

C. Solid, liquid, Gas

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3
Q

According to the Firefighter skills book what is the percentages of gasses in air?
A. 22% Oxygen, 80% Nitrogen, 1% Argon
B. < 1% carbon dioxide, 1 % Argon, 81% Nitrogen
C. 21% Nitrogen, 1% Argon, 80% Oxygen
D. 21% Oxygen, 78% Nitrogen, 1% Argon with trace gasses

A

D. 21% Oxygen, 78% Nitrogen, 1% Argon with trace gasses

Firefighter skills chapter 5 160

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4
Q

Fuels are materials that store energy. Think of the vast amounts of heat that are relased during a large fire. What are not the type of energy?
A. Chemical
B. Mechanical
C. Dark
D. Light

A

C. Dark
Energy exist in the following forms: chemical, mechanical, electrical, light, nuclear

Firefighters skills 161

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5
Q

____ temperature is the minium temperature at which a fuel, when heated, will ignite in the presence of air and continue to burn.
A. Fire
B. Auto ignition
C. Ignition
D. Smoke

A

C. Ignition

Fire Behavior 161

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6
Q

What is the differance between the fire tetrahedron and fire triangle. Pick the best answer
A. Fuel and oxygen are switched
B. Chemical chain reaction is added to Fire Triangle
C. Chemical chain reaction is added to Fire Tetrahedron
D. Fuel is green in the Fire Triangle and yellow in the Fire Tetrahedron

A

C. Chemical chain reaction is added to the Fire Tetrahedron

Fire Behavior Chapter 5 161

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7
Q

____- Is the process that liberates gaseious fuel vapors due to the heating of solid fuel
A. Chemical reaction
B. Oxidation
C. Combustion
D. Pyrolysis

A

D. Pyrolysis

Firefighter skills chapter 5 162

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8
Q

What is not a gas found in products of combustion?
A. CO or Carbon monoxide
B. Phosgene
C. Hydrogen cyanide
D. None of the above

A

D. None of the above
Smoke is a product of incomplete combustion : CO, CO2, Hydrogen cyanide, and phosgene

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9
Q

What is the correct definition difference between heat transfer and heat flux?
A. Heat transfer is the measure of the rate of heat transfer to or from one surface to another
B. Heat flux is the measure of the rate of heat transfer to or from one surface to another
C. Heat flux is the exchange of thermal energy between materials measured over time
D. None of the above

A

B. Heat flux is the measure of the rate of heat transfer to or from one surface to another
Heat transfer is the exchange of thermal energy between materials measured per unit over time

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10
Q

What are the three primary mechanisms by which heat is transferred?
A. Conduction, Induction, Convection
B. Deduction, Taxs, Liablity
C. Conduction, Convention, Radiation
D. Conduction, Convection, Radiation

A

D. Conduction, Convection, Radiation

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11
Q

The volume of space in which the cooler air is being drawn into the fire and the volume of space where the hotter gases and smoke are escaping from the fire are called the ____.
A. Flow path
B. Fire Flow
C. Convection
D. Conduction

A

A. Flow path

Firefigher skills Chapter 5 165

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12
Q

Heat release rate is measured in?
A. Kelvin
B. Fahrenheit
C. Celsius
D. Watts

A

D. Watts
and Joules per second

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13
Q

What materials burning would be a class A fire?
A. Wood, paper, plastics, and clothing
B. Energized electrical equipment
C. Lithium, potassium, titanium
D. Gasoline, Kerosine, diesel fuel

A

A. Wood, paper, plastics, and clothing
also inclused grasses

Firefighter skills chapter 5 168

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14
Q

What materials burning would be a class B fire?
A. Wood, paper, plastics, and clothing
B. Energized electrical equipment
C. Lithium, potassium, titanium
D. Gasoline, Kerosine, diesel fuel

A

D. Gasoline, Kerosine, diesel fuel
also incluses grease, tar, lacquer, oil based paint, motor-oils

Firefighter skills chapter 5 168

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15
Q

What materials burning would be a class C fire?
A. Wood, paper, plastics, and clothing
B. Energized electrical equipment
C. Lithium, potassium, titanium
D. Gasoline, Kerosine, diesel fuel

A

B. Energized electrical equipment
(Wiring, outlets, fuse boxes, circute breakers, transformers, generators, electrical motors that are energized)

Firefighter skills chapter 5 169

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16
Q

What materials burning would be a class D fire?
A. Wood, paper, plastics, and clothing
B. Energized electrical equipment
C. Lithium, potassium, titanium
D. Gasoline, Kerosine, diesel fuel

A

C. Lithium, potassium, titanium
(sodium, magnesium, zirconium)

Firefighter skills chapter 5 169

17
Q

What materials burning would be a class K fire?
A. Wood, paper, plastics, and clothing
B. Cooking oils and fats
C. Lithium, potassium, titanium
D. Gasoline, Kerosine, diesel fuel

A

B. Cooking oils and fats

Firefighter skills chapter 5 169

18
Q

What are the three configurations of fuel?
A. Earth, Fire, Wind
B. Surface-to-mass ratio, Orientation of fuel, Continuity of Fuel
C. Gas, Liquid, Solid
D. Eletrical, Wood, Liquid fuel

A

B. Surface-to-mass ratio, Orientation of fuel, Continuity of Fuel

Firefighter Skills chapter 5 171

19
Q

What are the stages of fire growth?
A. Incipient stage, Growth stage, Fully developed stage, Decomposition stage
B. Incipient stage, Growth stage, Fully developed stage, Decay stage
C. Growth stage, Incipent stage, Fully developed stage, Decay stage
D. None of the above

A

B. Incipient stage, Growth stage, Fully developed stage, Decay stage

Firefighter skills 172-177

20
Q

What fire stage is a backdraft occur?
A. Incipient Stage
B. Growth stage
C. Fully developed stage
D. Decay stage

A

B. Growth Stage
Although Decay starts when room becomes oxygen depleted a change in ventilation allows fire to move to fully developed

Firefighter skills 174

21
Q

Liquids who have a ____molecular weight tent to vaporize more readily then liquids with a ____molecular weight.
A, High, Low
B. Low, High
C. Smaller, Smallest
D.Large, High

A

B. Low, High

Firefighter skills Chapter 5 180

22
Q

____ is the lowest temperature at which a liquid or solid produces a flammable vapor
A. Smoke point
B. Flash point
C. Boiling point
D. Fire point

A

B. Flash point

23
Q

____ is the lowest temperatrue at which a liquid produces enough vapor to sustain continuous fire.
A. Smoke point
B. Flash point
C. Boiling point
D. Fire point

A

D. Fire point

24
Q

Gas with a vapor density of .07 will ____ compaired to air?
A. Rise
B. Fall
C. Neutral
D. Same

A

A. Rise
Vapor density is equal to 1, anything greater than 1 will sink in a confinced space and anything less than 1 will rise

Firefighter skills 180

25
Q

What accroynm best discribes “too rich to burn”?
A. LEL
B. UEL
C. FREL
D. BLEVE

A

B. UEL
Upper explosive limit
The gas is out of rage for a fuel air mix at the upper range to burn effectivly

26
Q

When propane tank on fire is it better to cool the ____ of the tank to prevent a BLEVE.
A. Top
B. Bottom
C. Side wall
D. Pressure relief valve

A

A. Top

Captains test 2024 (25 decks)

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