Fibers Test Review

Silk

• Natural

• Synthetic

Polyester

• Natural

• Synthetic

Asbestos

• Natural

• Synthetic

Cashmere

• Natural

• Synthetic

Linen

• Natural

• Synthetic

Olefin

• Natural

• Synthetic

Acrylic

• Natural

• Synthetic

After a burn test, an unknown sample appears to be sticky. It then dries and hardens in the shape it was left to dry in. Which of these fibers could be the unknown?

• Cotton

• Linen

• Silk

• Olefin

Which of the following explains why fabric is valuable as evidence?

• It is commonly left at crime scenes

• It can be used as a basis for comparison when trying to match an unknown and known sample

• It can be traced back to one individual person

 Like hair evidence, fiber evidence needs to be collected very quickly from a crime scene because

• It is trace evidence and easily lost

• It can deteriorate in cold or hot conditions very quickly

• It needs to be the first evidence sent to the lab because it is the most reliable

• It does not need to be collected quickly, it can be collected at any time