FORENSICS

Question 1

Impressions may be left by:

Answer 1

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

Question 2

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

TRUE
FALSE

Answer 2

TRUE

Question 3

Split into Biological Material and PHYSICAL MATERIAL:

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

Answer 3

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

Biological Material is:

• hair
• blood
• semen
• saliva

Question 4

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

Answer 4

true

Question 5

What is persistence?

Answer 5

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

Question 6

MATCH THESE
Contamination =  
Deterioration = 
Transfer =  
Evidential Integrity = 

• people entering and leaving
• exhibit movement not recorded
• rain
• offender returning

Answer 6

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

Question 7

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

Answer 7

Dried stains can be scraped or swabbed

Question 8

Evidence is relevant even if it doesn’t prove anything

Answer 8

true

Question 9

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

Answer 9

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

Question 10

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

Answer 10

TRUE

Question 11

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

Answer 11

TRUE

Question 12

WHAT IS THE GOLDEN HOUR

Answer 12

When evidential material is more readily available at the scene

Question 13

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

Answer 13

TRUE

Question 14

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

Answer 14

series

Question 15

Trademe and NZ Police have letter of agreement.

What is the Police role

Answer 15

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

Question 16

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

Answer 16

Do not touch the keyboard or mouse buttons

Question 17

Hair rarely provides definitive _______

Answer 17

Evidence

Question 18

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

Answer 18

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

Question 19

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

Answer 19

the Police acknowledge that the IMAGES are provided in confidence

Question 20

What does the chain of evidence refer to?

Answer 20

the official record of exhibit collection, security and movement

Question 21

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

Answer 21

A locked iphone

Question 22

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

Answer 22

No
YES
YES
YES

Question 23

In a forensic sense, what does persistence refers to?

Answer 23

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

Question 24

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

Answer 24

PHYSICAL
BIOLOGICAL
BIOLOGICAL
PHYSICAL

Question 25

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

Answer 25

evidential integrity deterioration transfer contamination

Question 26

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

Answer 26

FALSE TRUE FALSE TRUE

Question 27

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

Answer 27

TRUE TRUE FALSE TRUE

Question 28

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

Answer 28

TRUE

Question 29

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

Answer 29

true true true false

Question 30

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

Answer 30

TRUE TRUE TRUE TRUE

Question 31

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

Answer 31

FASLSE

Question 32

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:

Answer 32

the woman and male B

Question 33

Elimination are samples

Answer 33

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

Question 34

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

Answer 34

FALSE FALSE TRYE TRUE

Question 35

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.

Answer 35

labels notes papers sheets

Question 36

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.

Answer 36

true

Question 37

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

Answer 37

leave it switched on, uplift and contact ECL for advice

Question 38

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

Answer 38

* gloves and masks should be worn | * handle one item of evidential material at a time

Question 39

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

Answer 39

true false true true

Question 40

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

Answer 40

examine it with gloved hands

Question 41

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

Answer 41

true true false true

Question 42

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

Answer 42

fourth third second first