Quizzes - 1st Half

Question 1

Explain differential growth as it relates to Friction Skin development

Answer 1

Term used to describe:

All random growth aspects of Friction Skin development that occurs from:

• Onset of Primary Ridge development (10.5-12 weeks) until
• Appearance of Secondary Ridges (15-17 weeks); Time of Differentation

Question 2

Name the layers of the Epidermis

Answer 2

1) Corneum
2) Lucidum
3) Granulosum
4) Spinsosum
5) Basal

Question 3

List 3 general fingerprint patterns according to SWGFAST

Answer 3

1) Whorl
2) Loop
3) Arch

Question 4

What are the 3 properties of a pixel

Answer 4

1) Colour value
2) Location
3) Size

Question 5

What are the 3 main areas of the palm

Answer 5

1) Interdigital
2) Thenar
3) Hypothenar

Question 6

T/F - The main flexion creases are already established when Friction Ridges begin to grow

Answer 6

True

Question 7

What 3 things can you adjust on your camera that will affect image exposure

Answer 7

1) Aperature
2) Shutter Speed
3) ISO

Question 8

Why do we calibrate in image

Answer 8

So we can print the image life-sized

Question 9

Explain what Quantitative - Qualitative Analysis means with respect to Friction Skin comparison

Answer 9

Quantitative:
When the quality of detail is HIGH, the tolerance for dissimilarities is LOW and the requirement for quantity DECREASES

Qualitative:
When the quality of detail is LOW, the tolerance for dissimilarities is HIGH and the requirement for quantity INCREASES

Question 10

What type of evidence do you tender when you testify as an expert witness?

Answer 10

Opinion Evidence

Question 11

Which of the following statements refers to the conpletion of Analysis Notes/Documentation?

Answer 11

1) Used to refresh your memory before Court
2) Forms part of the methodology
3) Completed prior to any comparison being undertaken
4) Able to add information as it becomes available

Question 12

A comparison is completed hy examining the unknown fingerprint and then the known fingerprint because it _____1_____ and discourages _____2_____.

Answer 12

1) Allows for objective comparison

2) Preconceived notions

Question 13

Name 4 reasons for developing latent fingerprints with fingerprint powders

Answer 13

1) Make latent impression visible
2) Increase contrast with background
3) Enable impression to be photographed
4) Enable impression to be lifted

Question 14

State the philosophy of Friction Ridge Identification

Answer 14

Friction Ridge identification is established through the agreement of friction Ridge formations, in sequence, having sufficient uniqueness to identify

Question 15

T/F An inage taken in RAW format cannot be changed or altered and then saved again in RAW format

Answer 15

True

Question 16

T/F Latent, visible and molded are the three typesnof fingerprints that can be found at a crime scene

Answer 16

True

Question 17

Name the 5 things that should be included in your markings around a fingerprint.

Answer 17

1) Initials
2) Date
3) File number
4) Unique ‘R’ number
5) Directional arrow (optional)

Question 18

Name the 5 types of enhancement techniques used in photoshop

Answer 18

1) Channels
2) Grey scale
3) Invert
4) Levels
5) Curves

Question 19

What are 2 flash techniques used to photograph a bottle

Answer 19

1) Bounce Flash

2) Feathered Flash

Question 20

T/F In Photoshop, the resaming function has to be activated if you want to adjust the resolution but keep the current image size

Answer 20

True

Question 21

What are 3 types of evidence

Answer 21

1) Testimonial
2) Documentary
3) Physical

Question 22

What order of steps should be followed when processing a crime scene

Answer 22

1) Speak with the investigator and/or homeowner at the scene
2) Conduct a walk through of the scene
3) Determine the path of evidence and safe path to be used
4) Photograph your crime scene as you found it
5) Search and locate evidence
6) Photograph ans seize evidence

Question 23

What is a fingerprint

Answer 23

An impression of the friction ridges of all or any part of a finger

Question 24

Name the 3 types of photographs required to properly record and document a crime scene

Answer 24

1) Overall
2) Mid-range
3) Close-up

Question 25

List the 4 responsibilities that we have as Forensic Identification officers regarding evidence, from the time it is collected until it is produced in Court

Answer 25

1) Identify each piece of evidence
2) Describe exactly where it was located
3) Prove continuity
4) Describe any changes in the evidence

Question 26

Name the 3 methods of lifting dry origin 2D footwear impressions

Answer 26

1) ESDL
2) Gel Lifter
3) Hinge Lifter

Question 27

What is the recommended casting material for a 3D footwear impression in dirt

Answer 27

Dental stone