Crime Scene Analyst IAI Review Questions with verified
answers
___________ is/are found in gun barrels and impart(s) a twisting motion on the
bullet as it leaves the barrel Ans✓✓✓ Rifling
(T/F) A careful and thorough search at the fire scene does not produce much
evidence due to the destructive nature of fires Ans✓✓✓ False
(T/F) One of the most important purposes of physical evidence is to establish the
identity of the suspect or victim Ans✓✓✓ True
(T/F) Searching a crime scene for contraband drugs is not different than any other
case Ans✓✓✓ False
(T/F) Small and sometimes microscopically unique markings can be directly traced
to the object or instrument in question Ans✓✓✓ True
(T/F) The field of firearms identification is referred to as forensic ballistics
Ans✓✓✓ False
(T/F) The motivations for suicide can be deeply hidden and remain a mystery
forever Ans✓✓✓ True
(T/F) The search of a vehicle in which a homicide was committed should be
conducted with the same degree of care as would be used when conducting the
search of an indoor or outdoor scene involved a murder Ans✓✓✓ True
,(T/F) The victim of a rape may appear perfectly calm and in control when being
interviewed by the police Ans✓✓✓ True
(T/F) There are always cases where guidelines cannot be followed Ans✓✓✓ False
(T/F) when a firearm is found at a scene, it must be rendered safe immediately
and then documented Ans✓✓✓ False
(T/F) When collecting clothing from the same person, you can bag these items
together if they are properly labeled Ans✓✓✓ True
(T/F) When collecting evidence, the general rule is that more is better than less
Ans✓✓✓ True
(T/F) When trying to determine the direction of force in glass using concentric
edge, the side of the glass forming a right angle with the conchoidal fracture is the
side the force came from Ans✓✓✓ True
(T/F) When videotaping a crime scene, the level of training required to take
quality video goes beyond the skills of a home hobbyist Ans✓✓✓ True
A _________ should be immediately instituted when collecting evidence from the
victim at the hospital Ans✓✓✓ Chain of custody
Arson is defined as the _________ and malicious burning of another's property or
the burning of one's own property for some illegal purpose Ans✓✓✓ willful
, Beyond determining that two rounds were fired from the same gun, what other
information can be developed from firearms-related evidence Ans✓✓✓ 1.
striations
2. caliber number
3. direction of twist
4. land and groove markings
Briefly describe the process involved when using the polymerase chain reaction
(PCR) technology for DNA analysis Ans✓✓✓ 1. Heat sample to separate double
helix
2. PCR Mixture added
3. Copy both DNA strands
Can fingerprints be lifted from human skin? If so, describe one of the techniques
Ans✓✓✓ Yes.
1. Place card over skin, apply pressure for 3 seconds
2. Remove card, dust with black powder
3. Mirror image
4. Mag powder directly to skin after card is removed
5. Photograph then lift
Define digital evidence Ans✓✓✓ All types of electronic equipment
Define the term Evidence Ans✓✓✓ Something legally submitted to a competent
tier of fact as a means of certainty the truth of any allege matter under
investigation
answers
___________ is/are found in gun barrels and impart(s) a twisting motion on the
bullet as it leaves the barrel Ans✓✓✓ Rifling
(T/F) A careful and thorough search at the fire scene does not produce much
evidence due to the destructive nature of fires Ans✓✓✓ False
(T/F) One of the most important purposes of physical evidence is to establish the
identity of the suspect or victim Ans✓✓✓ True
(T/F) Searching a crime scene for contraband drugs is not different than any other
case Ans✓✓✓ False
(T/F) Small and sometimes microscopically unique markings can be directly traced
to the object or instrument in question Ans✓✓✓ True
(T/F) The field of firearms identification is referred to as forensic ballistics
Ans✓✓✓ False
(T/F) The motivations for suicide can be deeply hidden and remain a mystery
forever Ans✓✓✓ True
(T/F) The search of a vehicle in which a homicide was committed should be
conducted with the same degree of care as would be used when conducting the
search of an indoor or outdoor scene involved a murder Ans✓✓✓ True
,(T/F) The victim of a rape may appear perfectly calm and in control when being
interviewed by the police Ans✓✓✓ True
(T/F) There are always cases where guidelines cannot be followed Ans✓✓✓ False
(T/F) when a firearm is found at a scene, it must be rendered safe immediately
and then documented Ans✓✓✓ False
(T/F) When collecting clothing from the same person, you can bag these items
together if they are properly labeled Ans✓✓✓ True
(T/F) When collecting evidence, the general rule is that more is better than less
Ans✓✓✓ True
(T/F) When trying to determine the direction of force in glass using concentric
edge, the side of the glass forming a right angle with the conchoidal fracture is the
side the force came from Ans✓✓✓ True
(T/F) When videotaping a crime scene, the level of training required to take
quality video goes beyond the skills of a home hobbyist Ans✓✓✓ True
A _________ should be immediately instituted when collecting evidence from the
victim at the hospital Ans✓✓✓ Chain of custody
Arson is defined as the _________ and malicious burning of another's property or
the burning of one's own property for some illegal purpose Ans✓✓✓ willful
, Beyond determining that two rounds were fired from the same gun, what other
information can be developed from firearms-related evidence Ans✓✓✓ 1.
striations
2. caliber number
3. direction of twist
4. land and groove markings
Briefly describe the process involved when using the polymerase chain reaction
(PCR) technology for DNA analysis Ans✓✓✓ 1. Heat sample to separate double
helix
2. PCR Mixture added
3. Copy both DNA strands
Can fingerprints be lifted from human skin? If so, describe one of the techniques
Ans✓✓✓ Yes.
1. Place card over skin, apply pressure for 3 seconds
2. Remove card, dust with black powder
3. Mirror image
4. Mag powder directly to skin after card is removed
5. Photograph then lift
Define digital evidence Ans✓✓✓ All types of electronic equipment
Define the term Evidence Ans✓✓✓ Something legally submitted to a competent
tier of fact as a means of certainty the truth of any allege matter under
investigation
