Exam 17: Forensic Aspects of Fire and Explosion Investigation

The speed in a low explosive is called the speed of:

Which of the following is a poor conductor of heat?

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)The entire range of possible gas or vapor fuel concentrations in air that are capable of burning B)Any material used to start or sustain a fire C)The decomposition of solid organic matter by heat D)The minimum temperature at which a fuel spontaneously ignites E)A chemical transformation in which heat energy is liberated F)Any compound consisting of only carbon and hydrogen G)A chemical transformation in which heat is absorbed from the surroundings H)The combination of oxygen with other substances to produce new substances I)The ability or potential of a system or material to do work J)Combustion on the surface of a solid fuel in the absence of heat high enough to pyrolyze the fuel K)Rapid combination of oxygen with another substance, accompanied by production of noticeable heat and light L)An offender's pattern of operation M)A fire caused by a natural heat-producing process in the presence of sufficient air and fuel N)The minimum temperature at which a liquid fuel produces enough vapor to burn O)The heat liberated during combustion -Modus operandi

Explain the proper collection of evidence at the origin of a fire that is suspected of being initiated by gasoline. Describe the proper submission of controls for laboratory examination.

The quantity of heat from a chemical reaction comes from the presence of oxygen in the reaction.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)The entire range of possible gas or vapor fuel concentrations in air that are capable of burning B)Any material used to start or sustain a fire C)The decomposition of solid organic matter by heat D)The minimum temperature at which a fuel spontaneously ignites E)A chemical transformation in which heat energy is liberated F)Any compound consisting of only carbon and hydrogen G)A chemical transformation in which heat is absorbed from the surroundings H)The combination of oxygen with other substances to produce new substances I)The ability or potential of a system or material to do work J)Combustion on the surface of a solid fuel in the absence of heat high enough to pyrolyze the fuel K)Rapid combination of oxygen with another substance, accompanied by production of noticeable heat and light L)An offender's pattern of operation M)A fire caused by a natural heat-producing process in the presence of sufficient air and fuel N)The minimum temperature at which a liquid fuel produces enough vapor to burn O)The heat liberated during combustion -Glowing combustion

The most widely used ________ explosives are black powder and smokeless powder.

Examples of secondary explosives do NOT include:

The collection and preservation of arson evidence should include all ________ materials such as wood flooring, rags, rugs, and upholstery.

Combustion is accompanied by the production of noticeable heat and light.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)The entire range of possible gas or vapor fuel concentrations in air that are capable of burning B)Any material used to start or sustain a fire C)The decomposition of solid organic matter by heat D)The minimum temperature at which a fuel spontaneously ignites E)A chemical transformation in which heat energy is liberated F)Any compound consisting of only carbon and hydrogen G)A chemical transformation in which heat is absorbed from the surroundings H)The combination of oxygen with other substances to produce new substances I)The ability or potential of a system or material to do work J)Combustion on the surface of a solid fuel in the absence of heat high enough to pyrolyze the fuel K)Rapid combination of oxygen with another substance, accompanied by production of noticeable heat and light L)An offender's pattern of operation M)A fire caused by a natural heat-producing process in the presence of sufficient air and fuel N)The minimum temperature at which a liquid fuel produces enough vapor to burn O)The heat liberated during combustion -Pyrolysis

Combustion occurring at the surface of a solid describes:

What is the minimum temperature at which a liquid fuel will produce enough vapor to burn?

Which is a chemical used to synthesize the explosive TATP?

Low explosives detonate relatively slowly (less than 1,000 meters per second), while high explosives detonate very rapidly (from 1,000 to 8,500 meters per second).

A fuel does not need to be present to initiate and sustain combustion.

A(n)________ fuse consists of black powder wrapped in a fabric or plastic casing and is used to carry a flame at a uniform rate to an explosive charge.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)The entire range of possible gas or vapor fuel concentrations in air that are capable of burning B)Any material used to start or sustain a fire C)The decomposition of solid organic matter by heat D)The minimum temperature at which a fuel spontaneously ignites E)A chemical transformation in which heat energy is liberated F)Any compound consisting of only carbon and hydrogen G)A chemical transformation in which heat is absorbed from the surroundings H)The combination of oxygen with other substances to produce new substances I)The ability or potential of a system or material to do work J)Combustion on the surface of a solid fuel in the absence of heat high enough to pyrolyze the fuel K)Rapid combination of oxygen with another substance, accompanied by production of noticeable heat and light L)An offender's pattern of operation M)A fire caused by a natural heat-producing process in the presence of sufficient air and fuel N)The minimum temperature at which a liquid fuel produces enough vapor to burn O)The heat liberated during combustion -Hydrocarbon

Hydrocarbon accelerants can be detected by:

The minimum temperature at which fuel vapor will ignite is known as: