Hair and Fiber Quiz

The most common type of regenerated fiber, derived from cellulose is

• cotton
• rayon
• silk
• nylon

Fibers that have spun together are called

• a textile
• yarn
• a mineral fiber
• a fiber

The transfer of evidence such as a fiber from a source to a person, then to another person or object, is called

• primary transfer
• secondary transfer
• tertiary transfer
• direct transfer

Early collection of fibers in an investigation is critical.  Within 24 hours, an estimated:

• 75% of all fibers fallen or lost
• 85% of all fibers fallen or lost
• 95% of all fibers fallen or lost
• None of the above

Natural fibers can be harvested from

• plants and animals only
• plants, animals and minerals only
• animals only
• plants only

Mineral fibers such as fiberglass and asbestos are useful for the manufacture of
 

• curtains and shoes
• workclothes like jeans and overalls
• sleep ware for children
• shingles and insulation

Tags

NGSS.MS-PS1-3

All of the following are true about fiber evidence EXCEPT

• It is possible to determine the composition and quantrities of its chemical makeup using gas chromatography and mass spectrophotometer.
• It is generally considered to be class evidence.
• It can be used to place a person at a crime scene at a specific time.
• It is analyzed using microscopes.

Which of the following fabrics is NOT made up of plant material?

• linen
• rayon
• silk
• cotton

Which of the following fibers leave a white, fluffy ash when burned?

• acetate
• cotton
• polyester
• nylon

Which aspect of fibers make them difficult to use as evidence in an outdoor crime scene?

• they are difficult to identify
• they are easily contaminated by other fibers
• they are easily destroyed by light
• they are easily blown away