Crime Scene Investigation IAI Test Questions With
Complete Solutions | New Update 2026/2027 |
Graded A+.
Final analysis is done where? Answer- In the courtroom
Major Goals of a Crime Scene Search Answer- * The recongnition and identification
of physical evidence
* The collection and proper preservation of the evidence
* Reconstrutction of the crime
* To assist detectives in forming a theory about the crime
The job of the CSI in "forensic science" Answer- Is to properly recongnize, identify,
collect, and preserve those pieces of evidence that begin the process known as
justice.
CSIs are responsible for what two of the four steps in the admissiblity of phiysical
evidence for court? Answer- recognition and collection
Physical evidence leads to the linkage of... Answer- the victim, perpetrator and the
scene
Four Major Factors that Determine the Value of Physical Evidence Answer-
Recognition-the CSI must have the knowledge and understanding to recongnize
potential items of physical evidence located at the crime scene
Collection-Utilizing the appropriate skills and following accepted protocols to gather
and preserve the physical evidence
Testing Procedures-Application of acceptable scientific procedures to analyze the
physical evidence
Courtroom Presentation-Qualifications of the witnesses to provide objective reports
on the forensic analysis of the evidence
Forensic Archeologist Answer- Utilizes archaeological recovery
techniques at
scenes of mass graves or
exhumations
Forensic Botanist Answer- Can aid in determining time since death or
assist in
,placing a suspect or victim at a location by studying the anatomy of plant
evenidence
Medical Examiner Answer- A medical doctor with five or more years of specialized
training in recognition of the cause and manner of death
Coroner Answer- An eleted or appointed official who conducts death investigations.
the coroner is not required to have a medical background and his/her duties
are
dictated by jurisdiction.
FSAB Answer- Forensic Specialties Accreditation Board- provides accreditation
to
those certifying bodies that meet stringent requirements for training,
education,
experience, and testing of individual forensic scientist and specialist.
the duty of the expert witness is to Answer- educate the jury and provide testimony
using terminology that is easily explainable and not misunderstood.
Essential elements of exper witness testimony Answer- Clarity, simplicity, and
honesty
expert witness testimony may be challenged in the following ways: Answer- *the
case may not require the expertise
*Basic qualifications and ability to give an opinion in the field at issue
*Insufficient education or experience to have anything of value to offer (no vaule
added)
*the methodology utilized to support the opinion may not be scientifically sound or
capable of supporting the profered opinion
*The methodology may be scientifically sound, but the opinion based on the method
is not sufficiently derived from that scientific methodology
Acts of commission Answer- Intentional
Forensic Entomologist Answer- Can evaluate the life cycle of insects found at the
scene or on the body of a victim to assist in establishing investigative leads such as
the movement of a body after death, manner of death, and the postmortem interval
Forensic Odontologist Answer- Dentist with special training in the evaluation and
handling of dental evidence, including bitemark comparison and the identification of
victims/suspects
Forensic Pathologist Answer- A medical doctor with additional specialty training in
determination of injuries and disease that cause death
, Acts of omission Answer- unintentional
O.J. effect Answer- discrediting the chain of evidence, the scientists, or the science
is known as the OJ effect and has become a key defense technique
Physical evidence is valuable in many aspects and can reveal data that will aid the
investigation by: Answer- *Providing essential information on the facts of the
casecorpus delicti
*Revealing the modus operandi (MO)-the preferred method of operation
*Demonstrating linkages between the vicitm, suspects, locations, and objects
*Proving or disproving witeness statements
*Identifying a suspect through DNA or other individualization
*Classifying unknown substances
*Reconstructing the crime scene-how a crime was committed
*Developing investigative leads
Corpus delicti Answer- facts of the case
MO-Modus Operandi Answer- the preferred method of operation
Class characteristics Answer- physical evidence that cannot be related to a common
origin with a high degree of certainty, therefore it can only be associated with a group
and never a single source
Indivdual characteristics Answer- are distinct differences in the physical evidence
that allow it to be associated with a single source and allow the examiner to
determine the uniqueness of any single object or piece of evidence
Items that can be obtained without obtaining a warrant Answer- 1. Seach the scene
for rictims and render aid in areas where a victim could resonably be found
2. Enter the scene to search for perpetrators (only in areas where a suspect could be
located)
3.While officers are legally in a location performing either of the two aforementioned
actions, they may swize items of evidentiary nature that are in plain view-however,
this should only occur in exigent circumstances, such as an unsecured weapon
Transient evidence Answer- is defined as physical evidence that may be lost forever
if not immediately preserved
Fruit of the poisonous tree Answer- If the physical evidence is tainted then any
subsequent information derived from that evidence would also be tainted
Frye v. United States Answer- rejected the admission of a polygraph test on the
basis that the reliability of the intrument had not been proven.
Frye test Answer- established the criteria that define judicial acceptance of scientific
advances. Basically, the ruling requires expert testimony to be based on scientific
principles or procedues that have already been generally accepted winthin the
scientific community. Courts will hear testimony from experts in the field as well as
consider scientific papers before determining the acceptability of a technique
Complete Solutions | New Update 2026/2027 |
Graded A+.
Final analysis is done where? Answer- In the courtroom
Major Goals of a Crime Scene Search Answer- * The recongnition and identification
of physical evidence
* The collection and proper preservation of the evidence
* Reconstrutction of the crime
* To assist detectives in forming a theory about the crime
The job of the CSI in "forensic science" Answer- Is to properly recongnize, identify,
collect, and preserve those pieces of evidence that begin the process known as
justice.
CSIs are responsible for what two of the four steps in the admissiblity of phiysical
evidence for court? Answer- recognition and collection
Physical evidence leads to the linkage of... Answer- the victim, perpetrator and the
scene
Four Major Factors that Determine the Value of Physical Evidence Answer-
Recognition-the CSI must have the knowledge and understanding to recongnize
potential items of physical evidence located at the crime scene
Collection-Utilizing the appropriate skills and following accepted protocols to gather
and preserve the physical evidence
Testing Procedures-Application of acceptable scientific procedures to analyze the
physical evidence
Courtroom Presentation-Qualifications of the witnesses to provide objective reports
on the forensic analysis of the evidence
Forensic Archeologist Answer- Utilizes archaeological recovery
techniques at
scenes of mass graves or
exhumations
Forensic Botanist Answer- Can aid in determining time since death or
assist in
,placing a suspect or victim at a location by studying the anatomy of plant
evenidence
Medical Examiner Answer- A medical doctor with five or more years of specialized
training in recognition of the cause and manner of death
Coroner Answer- An eleted or appointed official who conducts death investigations.
the coroner is not required to have a medical background and his/her duties
are
dictated by jurisdiction.
FSAB Answer- Forensic Specialties Accreditation Board- provides accreditation
to
those certifying bodies that meet stringent requirements for training,
education,
experience, and testing of individual forensic scientist and specialist.
the duty of the expert witness is to Answer- educate the jury and provide testimony
using terminology that is easily explainable and not misunderstood.
Essential elements of exper witness testimony Answer- Clarity, simplicity, and
honesty
expert witness testimony may be challenged in the following ways: Answer- *the
case may not require the expertise
*Basic qualifications and ability to give an opinion in the field at issue
*Insufficient education or experience to have anything of value to offer (no vaule
added)
*the methodology utilized to support the opinion may not be scientifically sound or
capable of supporting the profered opinion
*The methodology may be scientifically sound, but the opinion based on the method
is not sufficiently derived from that scientific methodology
Acts of commission Answer- Intentional
Forensic Entomologist Answer- Can evaluate the life cycle of insects found at the
scene or on the body of a victim to assist in establishing investigative leads such as
the movement of a body after death, manner of death, and the postmortem interval
Forensic Odontologist Answer- Dentist with special training in the evaluation and
handling of dental evidence, including bitemark comparison and the identification of
victims/suspects
Forensic Pathologist Answer- A medical doctor with additional specialty training in
determination of injuries and disease that cause death
, Acts of omission Answer- unintentional
O.J. effect Answer- discrediting the chain of evidence, the scientists, or the science
is known as the OJ effect and has become a key defense technique
Physical evidence is valuable in many aspects and can reveal data that will aid the
investigation by: Answer- *Providing essential information on the facts of the
casecorpus delicti
*Revealing the modus operandi (MO)-the preferred method of operation
*Demonstrating linkages between the vicitm, suspects, locations, and objects
*Proving or disproving witeness statements
*Identifying a suspect through DNA or other individualization
*Classifying unknown substances
*Reconstructing the crime scene-how a crime was committed
*Developing investigative leads
Corpus delicti Answer- facts of the case
MO-Modus Operandi Answer- the preferred method of operation
Class characteristics Answer- physical evidence that cannot be related to a common
origin with a high degree of certainty, therefore it can only be associated with a group
and never a single source
Indivdual characteristics Answer- are distinct differences in the physical evidence
that allow it to be associated with a single source and allow the examiner to
determine the uniqueness of any single object or piece of evidence
Items that can be obtained without obtaining a warrant Answer- 1. Seach the scene
for rictims and render aid in areas where a victim could resonably be found
2. Enter the scene to search for perpetrators (only in areas where a suspect could be
located)
3.While officers are legally in a location performing either of the two aforementioned
actions, they may swize items of evidentiary nature that are in plain view-however,
this should only occur in exigent circumstances, such as an unsecured weapon
Transient evidence Answer- is defined as physical evidence that may be lost forever
if not immediately preserved
Fruit of the poisonous tree Answer- If the physical evidence is tainted then any
subsequent information derived from that evidence would also be tainted
Frye v. United States Answer- rejected the admission of a polygraph test on the
basis that the reliability of the intrument had not been proven.
Frye test Answer- established the criteria that define judicial acceptance of scientific
advances. Basically, the ruling requires expert testimony to be based on scientific
principles or procedues that have already been generally accepted winthin the
scientific community. Courts will hear testimony from experts in the field as well as
consider scientific papers before determining the acceptability of a technique
