Forensic Science Fibers

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Fibers are an excellent source of trace evidence because

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they are easily transferred from a victim to a suspect, they are often overlooked by a suspect, they can be easily collected and stored.

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Natural fibers can be harvested from

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plants, animals and minerals

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All of the following are characteristics of a synthetic fiber except: they are formed by combining monomer compounds into polymer molecules, they are man-made, they are used in the production of carpet fibers, they do not contain any natural fibers

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they do not contain any natural fibers

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A characteristic of natural fibers is that they

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are affected by microscopic organisms

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Which observations help identify a specific fiber?
- smell of the burned fiber
- on contact with flame, does the fiber coil or melt?
- color and structure of the residue left after the fiber burns?

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all of these choices

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amorphous

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without a defined shape; fibers composed of a loose arrangment of polymers that are soft, elastic, and absorbing

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crystalline

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regularly shaped; fibers composed of polymers picked side by side, which make it stiff and strong

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linen

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dense, strong fiber that resists rot and light damage

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mineral fiber

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a collection of mineral crystals formed into recognizable pattern

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monomer

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a small molecule that may bond to other monomers to become a polymer