Fiber as Evidence (A) | Fiber Evidence (B) | Classification of Fibers | Natural Fibers | Synthetic Fibers |
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What is direct transfer?
In this type of transfer, a fiber from person A is transferred to person B.
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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.
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What is a fiber?
This is the smallest indivisible unit of a textile.
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What is silk?
This natural fiber comes from the cocoons of the silkworm caterpillar.
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What is polyester?
This type of fiber is made from long strings that make up synthetic fibers.
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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.
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What is a vacumm?
This large item is used to remove fibers from larger areas.
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Fiber --> Yarn --> Textile
In what order are fibers classified from smallest to
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What is wool?
This natural fiber comes from sheep.
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What is rayon?
This is the most common synthetic fiber.
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What is secondary transfer?
In this type of transfer, a fiber from person A is transferred to person B and then to person C.
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What are forceps/tweezers/tape?
This smaller item is used to remove fiber from smaller areas.
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What are warp and weft?
Weaving consists of arranging threads lengthwise and crosswise. They are also known as ______________________ & __________________
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What is cotton?
The most common plant fiber.
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What is a monomer?
This is one chemical unit.
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What is secondary transfer?
In this type of transfer, person A shakes person B's hand. Person B touches the handle of a knife.
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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.
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What is a Twill pattern?
This type of weave pattern or design resembles a stair steps.
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What are carbohydrates?
Plant fibers are made of this material.
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What is a polymer?
This is a long string of repeating chemical units.
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What is class evidence?
This type of evidence is considered _________________ evidence because they are mass produced.
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What is a pattern?
One can physically match and compare the ____________________ of knit or weaved used.
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What is a Plain pattern?
This type of weave pattern or design resembles a checkerboard.
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What is a mineral fiber?
This type of fiber is unique and is neither protein or cellulose. Asbestos is one type of this fiber.
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What is a 1.) Natural fiber, & 2.) Synthetic Fiber?
1. ___________________ fibers are much weaker than 2. ___________________ fibers.
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