OPOTA Week 23-24 crime scene, crit incident
stress, interview & interrogation, hazmat wmd,
bombs & explosives Exam | Questions with 100%
Correct Answers | Verified | Latest Update
2026/2027
Save
Terms in this set (82)
The primary responsibilities of the - Officer Safety
first responder to a crime scene
- Rendering aid
- Securing the scene
- Interacting with witnesses
Contamination the transfer of outside material to the scene (e.g.
hair from a first responder drops off into the scene
and is collected)
Cross-Contamination the transfer of material between evidence within
the scene (e.g. packing the victim's clothing in the
same bag as the supect's clothing)
,Measures the officer can take to - PPE: latex/nitrile gloves, shoe covers, respiratory
minimize contamination at a crime equipment, eye protection and anything else
scene required by the scene's circumstances
- Change gloves often and don't touch your face,
hair, cell phone while wearing gloves
- Do not talk over evidence as your DNA can be
transferred to the evidence (saliva spray)
- Use disposable or sterilized equipment, sterilize
all reusable equipment once done (placards,
scales, tripod legs)
- Do not use the facilities, phones, change
temperature/lighting controls, eat, drink, smoke, or
spit inside the perimeter of the crime scene, as this
may disturb evidence that is present
- An officer should be designated to monitor entry
into the scene and keep unauthorized personnel
out
Class characteristics - Traits or characteristics of evidence that allow the
item to be compared with a group
- Shared by all members of its class
- Cannot be identified to a single source
,Individual characteristics - Traits or chracteristics of an item of evidence that
allows the item to be compared with a specific
object or person
- The comparison will determine whether or not the
item originated from the object or person (i.e.
allows for individualization of evidence)
Labeling evidence - Tags should be directly attached to the evidence
packaging at the time of the collection
- Should never be removed
Factors to show integrity of evidence - Evidence collected at a crime scene is the same
in the chain of custody as presented in court
- The item must not be altered or changed
- Chain must be maintained in order to document
reasons why any party has dealt with the evidence
Information a chain of custody must - Who found or had contact with the evidence
reflect - To whom the evidence was given
- Reason the evidence was given to that person
- When and by whom the evidence was returned
- Where and how the evidence was stored until
taken to court
- Any changes which were made to the evidence
Where should paperwork be for it must remain with the evidence
chain of custody of evidence?
, Information which must be shown on - Date recovered
an evidence tag - Time recovered
- Exact location of recovery
- Report/case number
- Item number
- Thorough description of the item
- Recovering officer's initials/badge number
- Marked to show bio-hazard and/or sharp object
- Victim's name, if known
- Type of crime
Eustress (i.e. good stress) Stress that has a POSITIVE motivating force that
may lead to an increase in health and performance
- examples: deadlines, competition, specialized
training opportunity
- From a positive standpoint, eustress is
experienced as increased mental alertness & focus
- Positive stress tends to be short lived, after
challenge is met the body returns to normal state,
this allows the body to rest
stress, interview & interrogation, hazmat wmd,
bombs & explosives Exam | Questions with 100%
Correct Answers | Verified | Latest Update
2026/2027
Save
Terms in this set (82)
The primary responsibilities of the - Officer Safety
first responder to a crime scene
- Rendering aid
- Securing the scene
- Interacting with witnesses
Contamination the transfer of outside material to the scene (e.g.
hair from a first responder drops off into the scene
and is collected)
Cross-Contamination the transfer of material between evidence within
the scene (e.g. packing the victim's clothing in the
same bag as the supect's clothing)
,Measures the officer can take to - PPE: latex/nitrile gloves, shoe covers, respiratory
minimize contamination at a crime equipment, eye protection and anything else
scene required by the scene's circumstances
- Change gloves often and don't touch your face,
hair, cell phone while wearing gloves
- Do not talk over evidence as your DNA can be
transferred to the evidence (saliva spray)
- Use disposable or sterilized equipment, sterilize
all reusable equipment once done (placards,
scales, tripod legs)
- Do not use the facilities, phones, change
temperature/lighting controls, eat, drink, smoke, or
spit inside the perimeter of the crime scene, as this
may disturb evidence that is present
- An officer should be designated to monitor entry
into the scene and keep unauthorized personnel
out
Class characteristics - Traits or characteristics of evidence that allow the
item to be compared with a group
- Shared by all members of its class
- Cannot be identified to a single source
,Individual characteristics - Traits or chracteristics of an item of evidence that
allows the item to be compared with a specific
object or person
- The comparison will determine whether or not the
item originated from the object or person (i.e.
allows for individualization of evidence)
Labeling evidence - Tags should be directly attached to the evidence
packaging at the time of the collection
- Should never be removed
Factors to show integrity of evidence - Evidence collected at a crime scene is the same
in the chain of custody as presented in court
- The item must not be altered or changed
- Chain must be maintained in order to document
reasons why any party has dealt with the evidence
Information a chain of custody must - Who found or had contact with the evidence
reflect - To whom the evidence was given
- Reason the evidence was given to that person
- When and by whom the evidence was returned
- Where and how the evidence was stored until
taken to court
- Any changes which were made to the evidence
Where should paperwork be for it must remain with the evidence
chain of custody of evidence?
, Information which must be shown on - Date recovered
an evidence tag - Time recovered
- Exact location of recovery
- Report/case number
- Item number
- Thorough description of the item
- Recovering officer's initials/badge number
- Marked to show bio-hazard and/or sharp object
- Victim's name, if known
- Type of crime
Eustress (i.e. good stress) Stress that has a POSITIVE motivating force that
may lead to an increase in health and performance
- examples: deadlines, competition, specialized
training opportunity
- From a positive standpoint, eustress is
experienced as increased mental alertness & focus
- Positive stress tends to be short lived, after
challenge is met the body returns to normal state,
this allows the body to rest
