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CIK > FORENSICS > Flashcards

FORENSICS Flashcards

1
Q

Impressions may be left by:

A
  • item striking surface
  • tool mark
  • teeth or fingernail marks
  • sole of shoe
  • finger or palm prints
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2
Q

Chain of Evidence is the official record of exhibit collection, security and movement

TRUE
FALSE

A

TRUE

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3
Q

Split into Biological Material and PHYSICAL MATERIAL:

  • footwear impressions
  • hair
  • glass fragments
  • blood
  • documents
  • semen
  • saliva
  • paint flakes
  • firearm residue
  • clothing fibres
A

Physical Material is: - paint flakes - glass fragments - firearm residue - documents - clothing fibres - footwear impressions

Biological Material is:

  • hair
  • blood
  • semen
  • saliva
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4
Q

Contamination occurs when: - biological material is added to exhibit - you wear the same gloves - lack of boundaries

A

true

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5
Q

What is persistence?

A

Persistence refers to the length of time forensic material is able to be detected following a crime

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6
Q 
MATCH THESE
Contamination =  
Deterioration = 
Transfer =  
Evidential Integrity =
  • people entering and leaving
  • exhibit movement not recorded
  • rain
  • offender returning
A

Contamination = people entering and leaving Deterioration = rain Transfer = offender returning Evidential Integrity = exhibit movement not recorded

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7
Q

How do you collect a dry sample of DNA from a crime scene

A

Dried stains can be scraped or swabbed

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8
Q

Evidence is relevant even if it doesn’t prove anything

A

true

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9
Q

TRANSFER OR CONTAMINATION

  • only one vehicle used
  • exhibits not packaged correctly
  • offender present prior to incident
  • equipment not cleaned
  • forensic material added to exhibit post incident
  • not separated at initial action
A

Contamination:

  • exhibits not packaged correctly
  • equipment not cleaned
  • forensic material added to exhibit post incident

Transfer:

  • only one vehicle used
  • not separated at initial action
  • offender present prior to incident
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10
Q

Material collected at a crime scene is contaminated when: - equipment not cleaned - searcher leaves trace - people or animals enter - exhibits repeatedly handled

A

TRUE

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11
Q

Trace evidence can be seen by human eye, biological or physical and usually in fragments or small particles

A

TRUE

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12
Q

WHAT IS THE GOLDEN HOUR

A

When evidential material is more readily available at the scene

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13
Q

Elimination samples are taken from those who come into legitimate contact with evidence

A

TRUE

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14
Q

You are seconded to a team working on reducing motor vehicle crime in your area and you need to find out more general information about vehicle mubering and iID systems VIN

A VIN is a 17 character _____ of digits and letters

A

series

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15
Q

Trademe and NZ Police have letter of agreement.

What is the Police role

A

Police will provide a sample of the format or template of documentation required by Trademe to SUPPORT a complaint

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16
Q

If you find a laptop what must you do with the key board or mouse to maintain forensic evidence?

A

Do not touch the keyboard or mouse buttons

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17
Q

Hair rarely provides definitive _______

A

Evidence

18
Q

How should you package unknown powders or tablets for evidential purposes?

A

pack in self sealing plastic bags (to avoid loss or contamination) inside a standard drugs envelope

19
Q

The NZ Police and Bankers Assn have letter of agreement which outlines the protocol regarding the release of CCTV images.

What does schedule 3, section 3.4 state

A

the Police acknowledge that the IMAGES are provided in confidence

20
Q

What does the chain of evidence refer to?

A

the official record of exhibit collection, security and movement

21
Q

Evidential material, in relation to a particular offence means evidence of the offence or any other items, tangible or intangible, of relevance to the investigation of the offence.

A tangible item that could be evidential material is

A

A locked iphone

22
Q

Can an impression be left by:

Yes/No

  • drops of saliva or semen
  • a tool used as a lever
  • the sole of shoe or boot
  • finger or palm print
A

No
YES
YES
YES

23
Q

In a forensic sense, what does persistence refers to?

A

the length of time biological material can be detected following a crime

24
Q 
Classify the following common type of evidence
• class fragment 
• blood 
• semen 
• paint flakes
A

PHYSICAL
BIOLOGICAL
BIOLOGICAL
PHYSICAL

25
Q

Select the forensic concept that beat describes how the collection of forensic evidence may be affected when:

  • the movement of exhibits is not recorded
  • the crime scene is dowsed in continuous rainfall
  • offender is taken back into the scene for interview
  • many people enter and leave the scene
A

evidential integrity
deterioration
transfer
contamination

26
Q

DNA is known to deteriorate under which of the following conditions:
TRUE/FALSE

  • when handled without gloves or masks
  • when packaging creates conditions that cause it to degrade
  • when it has exited the body for up to two hours
  • when exposed to extremes if weather conditions
A

FALSE
TRUE
FALSE
TRUE

27
Q

Evidence contamination may occur when:

TRUE/FASLE?

  • a crime scene lacks clear boundaries, pathways and security
  • an examiner wears the same gloves to uplift different exhibits
  • when the material collected cannot be linked to the investigation
  • biological material is inadvertently added to an exhibit
A

TRUE
TRUE
FALSE
TRUE

28
Q

Elimination samples refers to samples (eg, hair, fingerprint and shoeprint) taken from people who are not investigation for the offence but may have come into contact with the crime scene evidence

A

TRUE

29
Q

Contamination may occur when:

  • equipment used has not been cleaned
  • exhibits are not correctly packaged or secured
  • forensic material us added to an exhibit post incident
  • forensic material us exposed to rain or sunshine
A

true
true
true
false

30
Q

Material collected at a crime scene can be contaminated when:

  • scene equipment is not cleaned before use
  • people or animals have entered the scene
  • a scene searcher leaves traces on an exhibit
  • exhibits are repeatedly handled before packaging
A

TRUE
TRUE
TRUE
TRUE

31
Q

The relevance of forensic evidence is reliant upon what people say or do

A

FASLSE

32
Q

A woman dances with a man, male A who is wearing a red jersey and she gets red fibres on her top. Late in the evening she dances with another man male B and some of the red fibres are transferred to the shirt of that man.

The scenario is an example of secondary transfer between:

A

the woman and male B

33
Q

Elimination are samples

A

taken from people who had legitimate contact with the scene or an exhibi

34
Q

Mark the following about trace evidence true or false

  • may only be seen by specialist forensic personnel
  • cannot been seen by the human eye
  • is usually found in fragments or small particles
  • may be of a biological or physical nature
A

FALSE
FALSE
TRYE
TRUE

35
Q

When packaging documents that are to be forwarded to the Document Examiner you should

  • Complete ____ before attaching to the exhibits package.
  • Include warning ____ on labels if the document is also required fir fingerprinting.
  • Unfold dry ____ and package flat in plastic sleeve or envelope.
  • Enclose document package between ___ of card.
A

labels
notes
papers
sheets

36
Q

It is important to call a fingerprint officer to a homicide scene because latent fingerprints in blood and other contaminants on a body can be destroyed when a body is moved.

A

true

37
Q

During a scene examination you find a cell phone. You observe that it is turned on. What action should you take to uplift the phone

A

leave it switched on, uplift and contact ECL for advice

38
Q

The minimum standards governing the collection of any item/exhibit that is likely to be submitted for DNA forensic analysis are?

A
  • gloves and masks should be worn

* handle one item of evidential material at a time

39
Q

When a window frame at a crime scene shows signs of tool marks to force entry it is important

  • photograph the impression or mark in full light prior to collecting evidence
  • try fitting probable tool into the mark to confirm it as the means of entry
  • take control samples of paint or wood from the surrounding area
  • remove the entire damaged area for forensic examination
A

true
false
true
true

40
Q

During a crime scene examination you find a small amount of a dry substance in a jar. To determine if it is to be collected for analysis you can

A

examine it with gloved hands

41
Q

The digital imaging guidelines direct that any digital image that is to be produced as evidence must:

  • be validated by image numbering and the taker
  • be secured in a master copy “read only” format
  • have been taken by a person trained in photography
  • have been downloaded to a police/secure computer
A

true
true
false
true

42
Q

A sequence of actions is undertaken prior to uplifting any exhibit from the scene of a serious crime Identify the correct sequence for the action

  • seal, label and secure the exhibit
  • use disposable gloves and appropriate equipment to uplift and package the exhibit
  • make a notebook record of the exhibit significance and consider the type of forensic evidence that may be present on it
  • record ( sketch, diagram, photograph) the exhibit in situ
A

fourth
third
second
first

CIK (8 decks)

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