Quizzes - 1st Half Flashcards
Explain differential growth as it relates to Friction Skin development
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
Name the layers of the Epidermis
1) Corneum
2) Lucidum
3) Granulosum
4) Spinsosum
5) Basal
List 3 general fingerprint patterns according to SWGFAST
1) Whorl
2) Loop
3) Arch
What are the 3 properties of a pixel
1) Colour value
2) Location
3) Size
What are the 3 main areas of the palm
1) Interdigital
2) Thenar
3) Hypothenar
T/F - The main flexion creases are already established when Friction Ridges begin to grow
True
What 3 things can you adjust on your camera that will affect image exposure
1) Aperature
2) Shutter Speed
3) ISO
Why do we calibrate in image
So we can print the image life-sized
Explain what Quantitative - Qualitative Analysis means with respect to Friction Skin comparison
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
What type of evidence do you tender when you testify as an expert witness?
Opinion Evidence
Which of the following statements refers to the conpletion of Analysis Notes/Documentation?
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
A comparison is completed hy examining the unknown fingerprint and then the known fingerprint because it _____1_____ and discourages _____2_____.
1) Allows for objective comparison
2) Preconceived notions
Name 4 reasons for developing latent fingerprints with fingerprint powders
1) Make latent impression visible
2) Increase contrast with background
3) Enable impression to be photographed
4) Enable impression to be lifted
State the philosophy of Friction Ridge Identification
Friction Ridge identification is established through the agreement of friction Ridge formations, in sequence, having sufficient uniqueness to identify
T/F An inage taken in RAW format cannot be changed or altered and then saved again in RAW format
True
T/F Latent, visible and molded are the three typesnof fingerprints that can be found at a crime scene
True
Name the 5 things that should be included in your markings around a fingerprint.
1) Initials
2) Date
3) File number
4) Unique ‘R’ number
5) Directional arrow (optional)
Name the 5 types of enhancement techniques used in photoshop
1) Channels
2) Grey scale
3) Invert
4) Levels
5) Curves
What are 2 flash techniques used to photograph a bottle
1) Bounce Flash
2) Feathered Flash
T/F In Photoshop, the resaming function has to be activated if you want to adjust the resolution but keep the current image size
True
What are 3 types of evidence
1) Testimonial
2) Documentary
3) Physical
What order of steps should be followed when processing a crime scene
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
What is a fingerprint
An impression of the friction ridges of all or any part of a finger
Name the 3 types of photographs required to properly record and document a crime scene
1) Overall
2) Mid-range
3) Close-up
