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WorksheetsEssentials Chapter 5: Fire Behavior LT 08.01
Total questions: 30
Worksheet time: 15mins
Which of the following BEST describes how understanding the physical science of fire can help firefighters?
It keeps radiant heat from igniting fuel.
It keeps flaming combustion from beginning.
It translates into practical knowledge of fire behavior.
It helps in stopping rapid fire behavior from developing.
Which of the following terms refers to a substance remaining chemically the same, but changing in size, shape or appearance?
Chemical shift
Physical change
Chemical reaction
Parallel alteration
When a substance changes from one type of matter to another, it has had a:
chemical shift.
physical change.
chemical reaction.
physical alteration.
Which of the following represents the amount of energy that an object can release in the future?
Kinetic
Thermal
Potential
Mechanical
The energy possessed by a moving object is called:
kinetic energy.
thermal energy.
potential energy.
mechanical energy.
What type of reaction absorbs energy as it occurs?
Kinetic
Potential
Exothermic
Endothermic
The process of ignition causes pyrolysis in solid fuels and ___ in liquid fuels.
melting
freezing
vaporization
kinetic reaction
What type of combustion occurs when burning is localized and produces a smoldering glow near a material’s surface?
Kinetic
Flaming
Potential
Nonflaming
What are the elements necessary to create fire in the model represented by the fire triangle?
Fuel, oxygen, heat
Heat, fuel, ignition
Passive agents and heat
Oxygen and passive agents
Which of the following BEST describes what the fire tetrahedron represents?
A transfer of sound energy
The process of autoignition
An uninhibited chemical chain reaction
The relationship between fuel, oxygen, heat
What product of combustion is the most common product in structure fires?
Toxic smoke
Thermal energy
Hydrogen cyanide
Carbon monoxide
Which of the following BEST describes why firefighters must use SCBA during overhaul?
Smoke is not like other flammable gases; it will not burn or explode
Hazardous concentrations of smoke are only present outside the structure.
Hazardous concentrations are typically below short-term exposure limits.
Volume and density of smoke may be reduced, but the hazard is not eliminated.
The most common product of combustion in structure fires is:
phosgene
carbon dioxide
carbon monoxide
carbon
In what mode of combustion is a visible flame produced?
flaming
nonflaming
smoldering
glowing
All forms of fire involve a heat-producing chemical reaction between:
fuel and an oxidizer.
an oxidizer and light.
fuel and ambient heat.
ambient heat and light.
What product of combustion prevents the body from using oxygen on the cellular level?
Smoke
Thermal energy
Hydrogen cyanide
Carbon monoxide
What product of combustion increases the respiratory rate?
Flame
Smoke
Carbon dioxide
Hydrogen cyanide
What method of electrical energy is defined as particles that can be formed and spatter away from the point of arcing?
Sparking
Overcurrent
Resistance heating
Spontaneous ignition
The movement of two surfaces against each other creates what source of thermal energy?
Potential
Chemical
Electrical
Mechanical
Which of the following BEST describes what the fire tetrahedron represents?
A transfer of sound energy
The process of autoignition
An uninhibited chemical chain reaction
The relationship between fuel, oxygen, heat
What product of combustion may heat adjacent fuels, making them susceptible to ignition?
Toxic smoke
Thermal energy
Hydrogen cyanide
Carbon monoxide
What product of combustion causes the most fire deaths?
Toxic smoke
Thermal energy
Carbon dioxide
Hydrogen cyanide
What product of combustion may heat adjacent fuels, making them susceptible to ignition?
Toxic smoke
Thermal energy
Hydrogen cyanide
Carbon monoxide
Which of the following BEST describes why firefighters must use SCBA during overhaul?
Smoke is not like other flammable gases; it will not burn or explode.
Hazardous concentrations of smoke are only present outside the structure.
Hazardous concentrations are typically below short-term exposure limits.
Volume and density of smoke may be reduced, but the hazard is not eliminated.
Which of the following BEST describes kinetic energy transfer?
It does not move at all.
It moves from one substance to another, no matter what the temperature.
It moves from low-temperature to high-temperature substances.
It moves from high-temperature to low-temperature substances.
What source of thermal energy is the most common source of heat in combustion reactions?
Radiant energy
Electrical energy
Chemical energy
Mechanical energy
Which of the following sources of energy is a form of oxidation?
Sparking
Self-heating
Resistance heating
Spontaneous ignition
What method of electrical energy occurs when a high-temperature luminous discharge crosses a gap?
Arcing
Sparking
Overcurrent
Resistance heating
What method of heat transfer occurs when a material is heated as the result of direct contact with a heat source?
Potential
Radiation
Conduction
Convection
What heat transfer method usually occurs through movement of hot smoke and fire gases?
Potential
Radiation
Conduction
Convection
