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- 1. Multiple Choice
Natural fibers can be harvested from
plants and animals
only from plants
only from animals
plants, animals, and minerals
- 2. Multiple Choice
The shiny nature of silk can be related to
its hollow core
its ability to refract light
its smooth, round fibers
mucus secretions from the silkworm
- 3. Multiple Choice
What characteristics of cotton make it a great source of fiber for clothing?
It is very easy to grow.
It is resistant to staining.
The fibers are easily woven and dyed.
The fibers are extremely long.
- 4. Multiple Choice
Mineral fibers such as asbestos are very durable. These fibers are used in all of the following except
rope
shingles
floor tiles
brake liners
- 5. Multiple Choice
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.
- 6. Multiple Choice
A characteristic of natural fibers is that they
are stronger than synthetic fibers
melt at a lower temperature than synthetic fibers
are affected by microscopic organisms
will not break down when exposed to bright light
- 7. Multiple Choice
Which of the following observations are used to help identify a specific fiber?
smell of the burned fiber
on contact with the flame, does the fiber coil or melt?
color and structure of the residue left after the riber burns
all of the above
- 8. Multiple Choice
Fibers are an excellent source of trace evidence because
They are easily transferred from victim to suspect.
They are often overlooked by a suspect.
They can be easily collected and stored.
All of the above.
- 9. Multiple Choice
A fiber is collected at a crime scene. When viewed under a compound microscope, what two traits would indicate that the fiber was a human hair and not a piece of fiber obtained from an article of clothing? (Choose 2)
the presence of a cuticle
a medullary index of 0.33 or less
a wide diameter
its ability to dissolve in water
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