Fiber as Evidence (A) Fiber Evidence (B) Classification of Fibers Natural Fibers Synthetic Fibers
100
What is direct transfer?
In this type of transfer, a fiber from person A is transferred to person B.
100
What is 24 hours?
This is the amount of hours it takes for 95% of fiber evidence to fall off or get lost from a crime scene.
100
What is a fiber?
This is the smallest indivisible unit of a textile.
100
What is silk?
This natural fiber comes from the cocoons of the silkworm caterpillar.
100
What is polyester?
This type of fiber is made from long strings that make up synthetic fibers.
200
What is secondary transfer?
In this type of transfer, when student A pulls a loose fiber from their shirt and later that fiber falls to the ground and is picked up on the pant leg of student B.
200
What is a vacumm?
This large item is used to remove fibers from larger areas.
200
Fiber --> Yarn --> Textile
In what order are fibers classified from smallest to
200
What is wool?
This natural fiber comes from sheep.
200
What is rayon?
This is the most common synthetic fiber.
300
What is secondary transfer?
In this type of transfer, a fiber from person A is transferred to person B and then to person C.
300
What are forceps/tweezers/tape?
This smaller item is used to remove fiber from smaller areas.
300
What are warp and weft?
Weaving consists of arranging threads lengthwise and crosswise. They are also known as ______________________ & __________________
300
What is cotton?
The most common plant fiber.
300
What is a monomer?
This is one chemical unit.
400
What is secondary transfer?
In this type of transfer, person A shakes person B's hand. Person B touches the handle of a knife.
400
What are burning, dissolving, staining, density and/or chromatography?
A forensic scientist can perform any of the following procedures to allow for more conclusive data.
400
What is a Twill pattern?
This type of weave pattern or design resembles a stair steps.
400
What are carbohydrates?
Plant fibers are made of this material.
400
What is a polymer?
This is a long string of repeating chemical units.
500
What is class evidence?
This type of evidence is considered _________________ evidence because they are mass produced.
500
What is a pattern?
One can physically match and compare the ____________________ of knit or weaved used.
500
What is a Plain pattern?
This type of weave pattern or design resembles a checkerboard.
500
What is a mineral fiber?
This type of fiber is unique and is neither protein or cellulose. Asbestos is one type of this fiber.
500
What is a 1.) Natural fiber, & 2.) Synthetic Fiber?
1. ___________________ fibers are much weaker than 2. ___________________ fibers.






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