(CC) = Fiber Evidence Lab #2

Front

What characteristic of cotton makes it a great source of fiber for clothing? Options: It is a polymer of keratin, Stain resistant, Fibers are easily woven and dyed, Fibers are extremely long

Back

Fibers are easily woven and dyed

Front

What is this weave pattern? Options: Satin, Basket, Leno, Plain

Back

Plain

Front

The smallest unit of textile material that has a length many times greater than its diameter is a(n)

Back

Fiber

Front

The most prevalent plant fiber is: Hemp, Cotton, Mohair, Wool

Back

Cotton

Front

In the examination of fibers, the first and most important step in the examination will be: Microscopically comparing for color and diameter using a comparison microscope

Back

Microscopically comparing for color and diameter using a comparison microscope

Front

Fibers are an excellent source of trace evidence because

Back

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

Front

Natural fibers can be harvested from

Back

plants and animals

Front

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.

Back

they do not contain any natural fibers

Front

A characteristic of natural fibers is that they

Back

are affected by microscopic organisms.

Front

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?

Back

all of these choices