Hair Today, Gone Tomorrow
The three main parts of a hair strand?
What is Cuticle, cortex, and medulla
The type of microscope is most commonly used to examine hair and fibers
What is the comparison microscope
Name one natural fiber and one synthetic fiber.
What is Natural: cotton or wool; Synthetic: nylon or polyester
Why must investigators collect control hair samples from multiple parts of a suspect’s body
What is hair varies across different body regions
What is evidence
What is something that helps prove what happened
The stage of hair growth is the active growing phase
What is Anagen phase
a microscope shown about a hair that you can’t see with your eyes
What is its texture, color pattern, and structure (cuticle, cortex, medulla)
The main difference between natural and synthetic fibers?
What is natural comes from plants or animals; synthetic are man-made
A "secondary transfer" in fiber evidence
What is when fibers are transferred from one surface to another indirectly
One reason scientists collect hair or fiber evidence
To connect a suspect to a crime
The feature of the hair can sometimes show drug use or poisoning over time
What is the hair cortex (chemical traces stored along length)
The clear outer layer of a hair called that protects it
What is the cuticle
Give one example of a natural fiber.
What is Cotton, wool, or silk
Why would investigators collect hair samples from a suspect
What is to see if they match hairs found at the scene
The name of the man on trial that happened in Atlanta, Georgia where he was found guilty for dumping bodies over bridges and killing many teens.
Who is Wayne Williams
The human hair that is different from most animal hair under the microscope
What is medulla pattern and scale structure differ
The part of the hair’s inside gives it its color
What is the cortex
Give one example of a synthetic fiber.
What is nylon, polyester, or acrylic
Can fibers on clothing tell investigators what
What is if someone was in contact with another person or place
The rule says that when people come into contact, they leave something behind
What is the Locard’s Exchange Principle
The small piece of tissue sometimes attached to a hair root called, and why is it important
What is Follicular tag; it can contain nuclear DNA?
Comparing two hairs under a microscope, what are scientists looking for?
What is the similarities or differences in color, thickness, and pattern
Why are fibers important in forensic science?
What is they can link a suspect or object to a crime scene
What does finding the same fiber on a suspect and a victim suggest
What is they may have come into contact with each other
Why is it important to handle evidence carefully
What is to avoid mixing it up or contaminating it