Questions and Answers
Which of these options is commonly used to put out Class C fires?
What can extinguish Class A fires?
Water
A fire which uses a flammable liquid as fuel is classified as?
Class B Fire
Excess heat energy liberated by an oxidation reaction is called ______________.
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What is the minimum temperature at which a fuel will burn?
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What descriptive term refers to a material that promotes rapid cooling?
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What is the lowest temperature of a liquid in an open container to support continuous combustion?
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What temperature denotes the point at which a flammable liquid ignites?
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What is the minimum temperature necessary for self-contained combustion?
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An exothermic chemical change where combustible material reacts with an oxidizing agent is called?
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What term describes rapid oxidation accompanied by heat and light?
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What process describes the chemical decomposition of matter through heat?
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What measures the rate of heat flow through a unit area?
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What method of heat transfer occurs as energy travels in waves?
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What is classified as arson and set on purpose with motives?
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What term describes the malicious and willful burning of a building?
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What is known as ignition heat?
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What refers to gases liberated by heat?
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What refers to the normal pattern of fire and smoke movement within a building?
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In what phase of fire is the maximum heat developed?
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What does a burnt pattern of an inverted cone indicate?
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What occurrence involves a sudden burst of flames due to heat reaching the ignition temperature?
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What explosive condition occurs due to a sudden introduction of oxygen?
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What is the primary objective in investigating fires? (Select all that apply)
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What type of fires are caused by unforeseen acts of God?
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What combination of elements is known as the fire triangle?
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What is the most important part of the fire triangle?
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What means of heat transfer involves a circulating medium?
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What is the amount of heat needed to convert solid to liquid?
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What is formed by incomplete combustion of acetylene?
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What is matter made up of fine particles condensed from vapor called?
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What describes incandescent gases accompanied by oxidation?
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What is the threat to arson investigators after a fire has been contained?
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What color of smoke with red flames indicates burning of rubber?
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What is commonly used in fire-resistant materials?
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What form of static electricity is a common cause of providential fire?
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What is the most common cause of accidental fires related to?
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What device is used by an arsonist to spread a fire?
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What is usually a combustible liquid that hastens the start of fire?
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What is the most common reason for arson cases?
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What is the result of slow oxidation of combustible material?
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What term refers to the preparation of materials to start a fire?
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What substance forms when burning low-grade heavy oils?
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Which of the following is exempt from paying 0.01% of assessed value of the building?
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What is heat transfer by direct contact called?
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What substance can cause an explosion when mixed in the proper proportion?
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What term describes changes where heat is absorbed before a reaction occurs?
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What product results from incomplete combustion?
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What refers to the heat released during complete oxidation of organic fuel?
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What refers to the quantity of heat absorbed by a substance when changing states?
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What refers to the gas that remains when combustion products cool?
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What term describes fires caused by human error?
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What is the primary component of wood?
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During which fire phase does the burnt inverted cone pattern develop?
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What phase occurs when the fire can no longer support the flame?
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What color smoke indicates burning of nitrogen-containing materials?
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What material burns with greenish-yellow flames?
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What material produces bright reddish-yellow flames when burned?
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When black smoke with red and blue-green flames appears, what material is burning?
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When potassium is used as a combustible material, what color flame may be observed?
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Study Notes
Fire Classes and Extinguishing Agents
- Class A fires can be extinguished using water.
- Class B fires, fueled by flammable liquids, require specific extinguishing agents.
- Class C fires are commonly put out with CO2.
Fire Chemistry and Properties
- Heat of combustion is the energy released during oxidation reactions.
- Ignition temperature is the minimum temperature necessary for a fuel to start burning.
- The fire point is the lowest temperature at which a liquid can continuously combust.
- Flash point refers to the temperature at which vapors from a flammable liquid ignite.
- Oxidation is an exothermic chemical reaction involving combustibles and oxidizing agents.
Fire Behavior and Phases
- Free burning phase is where maximum heat and destruction occur.
- Flashover describes the rapid spread of fire resulting from heat reaching ignition temperature in combustible materials.
- Backdraft occurs when smoldering fire receives a sudden influx of oxygen.
Investigative Techniques and Patterns
- Arson is malicious burning, and a fingerprint of fire can be identified through burn patterns.
- Thermal balance outlines the movement of fire and gases in a structure under natural conditions.
- The primary objective of fire investigation is to determine the cause of the fire.
Electrical and Reactive Elements
- Lightning is a significant natural cause of fires due to its high energy.
- Heat transfer can occur via conduction (direct contact), convection (circulating medium), or radiation (waves).
Fuel and Fire Triangle
- The fire triangle consists of fuel, heat, and oxygen, with fuel being the most critical component.
- Common household sources of accidental fires include smoking-related incidents.
- Accelerants are substances that hasten fire ignition.
Environmental and Chemical Factors
- Carbon monoxide is a dangerous byproduct of incomplete combustion.
- The color of smoke can indicate the materials consumed, with heavy brown smoke signaling nitrogen products and bright red flames often indicating burning rubber.
Miscellaneous Fire-Related Concepts
- Soot is produced from incomplete combustion and is comprised of fine particles.
- Plants refer to the preparation needed for starting a fire, which includes gathering combustibles.
- Latent heat is the thermal energy absorbed during state changes in materials.
- Free radicals are gases released by heat that can further affect combustion processes.
Legal and Arson Considerations
- Intentional fires are classified as arson, based on motive and legal definitions.
- Accidental fires generally stem from human error or negligence.
- Profit is frequently the most common motive behind acts of arson.
Building Fire Dynamics
- As a fire burns, the shape of the burn pattern can indicate the fire's progression.
- Smoke colors vary based on combustion materials, such as the greenish-yellow flames indicating chlorine manganese.
Warning Signs and Risks
- Overheating can lead to spontaneous combustion, especially in combustible materials.
- The presence of carbon monoxide builds up during the smoldering phase of a fire, indicating decreased oxygen availability.
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Description
Test your knowledge on fire technology and arson investigation with these sample board questions. From fire classifications to extinguishing methods, this quiz covers essential terminology and concepts in the field. Perfect for students and professionals in fire science.
