WMD Exam 1 Questions and Answers Latest Update 2025 Graded A+
What do weapons of mass destruction do? - Answers Kill a bunch of people at once
Personnel duties and responsibilities of traditional crime scene processing (6) - Answers team leader,
photographer/ photographic log recorder, sketch preparer, evidence recorder/ custodian, evidence
recovery personnel, specialists (as needed)
Steps to crime scene processing (11) - Answers preparation, approach scene, initiate preliminary search,
evaluate physical evidence possibilities, prepare narrative description, depict scene photographically,
prepare diagram/sketch of scene, conduct detailed search, record and collect physical evidence, conduct
final survey, release the scene
Zone search pattern - Answers the crime scene is divided into sectors, and each team members takes
one sector.
Parallel search pattern - Answers all of the members of the team form a line, walking in a straight line, at
the same speed, from one end of the crime scene to the other.
Grid search pattern - Answers two parallel searchers, offset by 90 degrees, performed one after another
Spiral search pattern - Answers starting at the middle or the outside of the scene and working your way
to the opposite; helpful if there is only one searcher
Line search pattern - Answers Generally used in large crime scenes, where team members stand in a line
equal distance apart and walk to the opposite side of the crime scene, then circle back to the front end
of the scene further to the right or left.
How big is a crime scene? - Answers as big as however far the evidence is
Trace evidence - Answers hairs, fibers, gunshot residue, paint residue, broken glass, unknown chemicals,
drugs
Impression evidence - Answers fingerprints, footwear, tool marks, striations on a fired bullet
Body fluid evidence - Answers blood, semen, saliva, vomit
Weapons and firearms evidence - Answers knives, guns, bullet holes, cartridge casings
Questioned documents/digital - Answers diaries, suicide notes, phone books; answering machines, caller
ID units, cellphones
Locard's Exchange Principle - Answers Whenever two objects come into contact with one another, there
is exchange of materials between them.
, Evidence package label - 7 essential pieces of information - Answers 1. file number (case identifier), 2.
date of search, 3. item number, 4. description of item, 5. location item found, 6. full name of finder and
initials, 7. full name of second person who witnessed item in place and initials
What survives after detonation? - Answers fingerprints, dentition, DNA, Anthropology/ x-rays
Types of explosions - Answers mechanical, chemical, nuclear
Mechanical explosion - Answers a build-up of pressure which subsequently bursts some form of
containment
Chemical explosion - Answers rapid and violent oxidation reaction that produces large amounts of hot
gas (involves electrons in atoms)
Nuclear explosion - Answers the release of energy from an atomic nucleus
Fission - Answers splitting of a large atom's nucleus
Fusion - Answers Joining of two small atoms' nuclei
Detonation velocity - Answers the speed of an explosive measured in feet per second at which explosive
energy propagates through the explosive material itself
Low explosives - Answers velocity of explosion is less than the speed of sound (343.2 m/s or 1,126 ft/s);
reactions are subsonic; cannot support a detonation wave; typically are mixtures; *confinement
required*
High explosives - Answers detonate with a velocity greater than 3300 ft/s (~1000 m/s); usually a
compound (TNT); support a detonation wave; *confinement not needed*
High-velocity high explosives - Answers detonate with a velocity greater than TNT (6900 m/s)
Primary explosives - Answers extremely sensitive to heat, shock, and friction and are often utilized in
blasting caps (e.g., mercury fulminate and lead picrate), have less energy than secondary explosives
Secondary explosives - Answers less volatile than primary explosives and not ignited by spark, flame, or
hot wire. (e.g., TNT, RDX, and PETN), more powerful than primary explosives, require a detonator or
booster to function, used in larger quantities
Blasting agents - Answers even less sensitive to heat, shock, and friction and not ignited by #8 blasting
cap
Gun propellents - Answers usually single base, nitrocellulose (NC), double base, adding nitroglycerine
(NC and NG), or triple base (NC, NG, and nitroguanidine (NQ))
What do weapons of mass destruction do? - Answers Kill a bunch of people at once
Personnel duties and responsibilities of traditional crime scene processing (6) - Answers team leader,
photographer/ photographic log recorder, sketch preparer, evidence recorder/ custodian, evidence
recovery personnel, specialists (as needed)
Steps to crime scene processing (11) - Answers preparation, approach scene, initiate preliminary search,
evaluate physical evidence possibilities, prepare narrative description, depict scene photographically,
prepare diagram/sketch of scene, conduct detailed search, record and collect physical evidence, conduct
final survey, release the scene
Zone search pattern - Answers the crime scene is divided into sectors, and each team members takes
one sector.
Parallel search pattern - Answers all of the members of the team form a line, walking in a straight line, at
the same speed, from one end of the crime scene to the other.
Grid search pattern - Answers two parallel searchers, offset by 90 degrees, performed one after another
Spiral search pattern - Answers starting at the middle or the outside of the scene and working your way
to the opposite; helpful if there is only one searcher
Line search pattern - Answers Generally used in large crime scenes, where team members stand in a line
equal distance apart and walk to the opposite side of the crime scene, then circle back to the front end
of the scene further to the right or left.
How big is a crime scene? - Answers as big as however far the evidence is
Trace evidence - Answers hairs, fibers, gunshot residue, paint residue, broken glass, unknown chemicals,
drugs
Impression evidence - Answers fingerprints, footwear, tool marks, striations on a fired bullet
Body fluid evidence - Answers blood, semen, saliva, vomit
Weapons and firearms evidence - Answers knives, guns, bullet holes, cartridge casings
Questioned documents/digital - Answers diaries, suicide notes, phone books; answering machines, caller
ID units, cellphones
Locard's Exchange Principle - Answers Whenever two objects come into contact with one another, there
is exchange of materials between them.
, Evidence package label - 7 essential pieces of information - Answers 1. file number (case identifier), 2.
date of search, 3. item number, 4. description of item, 5. location item found, 6. full name of finder and
initials, 7. full name of second person who witnessed item in place and initials
What survives after detonation? - Answers fingerprints, dentition, DNA, Anthropology/ x-rays
Types of explosions - Answers mechanical, chemical, nuclear
Mechanical explosion - Answers a build-up of pressure which subsequently bursts some form of
containment
Chemical explosion - Answers rapid and violent oxidation reaction that produces large amounts of hot
gas (involves electrons in atoms)
Nuclear explosion - Answers the release of energy from an atomic nucleus
Fission - Answers splitting of a large atom's nucleus
Fusion - Answers Joining of two small atoms' nuclei
Detonation velocity - Answers the speed of an explosive measured in feet per second at which explosive
energy propagates through the explosive material itself
Low explosives - Answers velocity of explosion is less than the speed of sound (343.2 m/s or 1,126 ft/s);
reactions are subsonic; cannot support a detonation wave; typically are mixtures; *confinement
required*
High explosives - Answers detonate with a velocity greater than 3300 ft/s (~1000 m/s); usually a
compound (TNT); support a detonation wave; *confinement not needed*
High-velocity high explosives - Answers detonate with a velocity greater than TNT (6900 m/s)
Primary explosives - Answers extremely sensitive to heat, shock, and friction and are often utilized in
blasting caps (e.g., mercury fulminate and lead picrate), have less energy than secondary explosives
Secondary explosives - Answers less volatile than primary explosives and not ignited by spark, flame, or
hot wire. (e.g., TNT, RDX, and PETN), more powerful than primary explosives, require a detonator or
booster to function, used in larger quantities
Blasting agents - Answers even less sensitive to heat, shock, and friction and not ignited by #8 blasting
cap
Gun propellents - Answers usually single base, nitrocellulose (NC), double base, adding nitroglycerine
(NC and NG), or triple base (NC, NG, and nitroguanidine (NQ))
