Definitions
Define Forensics
The application of science to law
The average person loses 40-125 of these per day!
Hair
What is the first of the 7 S steps investigators take when arriving at the crime scene?
Securing the Scene
Fingerprints are what type of evidence
Circumstantial {physical}
What does CSI mean
Crime Scene Investigation
This lobe of the brain is associated with visual processing
Occipital Lobe
The core of the hair shaft is called the
Medulla
Separating the Witnesses is which of the 7 S's?
Step 2
This includes firsthand observations such as Eyewitness Accounts and Video Surveillance
Direct Evidence
These are made as a result of an observation.
Perceptions
This is a vivid recollection of dramatic or emotionally charged events
Flashbulb Memory
If the Medullary index is greater than .5 then the hair sample likely came from?
an Animal
What are the 4 search methods investigators use?
Grid, Linear, Spiral, Zone/Quadrant
What are the two types of circumstantial evidence
Physical and Biological
This is when you start from things you assume to be true and draw conclusions that must be true if your assumptions are true.
Deductive Reasoning
This is the (incredibly strong) protein that makes up hair
keratin
If hair has this attached it is consider individual evidence
Follicle
Which step involves taking a series of photographs of the crime scene? (Number and name of the step)
4. Seeing the Scene
List 3 types of Biological circumstancial evidence
Possible answers Include: DNA, Blood, Saliva, Hair, Natural Fibers, Skin
Name all four lobes of the brain
Frontal Lobe, Parietal Lobe, Occipital Lobe, and Temporal Lobe
When detectives explain that contact with another person, place, or object results in an exchange of physical materials, what principal are they describing?
Locard's principal
What are the 3 layers of a hair shaft?
Cuticle, Cortex, Medulla
When you create a crime scene sketch, what information do you label it with?
date, time, location and victim’s name (if known), the direction of north, case number, and officer in charge of sketch
In the United States what percentage of wrongly convicted defendants, later cleared by DNA evidence, were convicted based largely on eyewitness testimony
75%