Fiber Evidence

Fibers are an excellent source of trace evidence because

• they are easily transferred from a victim to a suspect

• they are often overlooked by a suspect

• they can be easily collected and stored

• all of these choices

Scientists use this test to analyze the dyes in fabric evidence:

• Stain test

• Solvent test

• Infrared Spectroscopy

• Chromatography

In a burn test, these fibers will often shrink back away from the flame.

• Synthetic

• Natural

Fibers are considered what kind of evidence? 

• Individual

• Class

• Direct

• Indirect

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 fiber burn

• all of the above

Tags

NGSS.MS-PS1-2

When fibers are transferred straight from victim to suspect or suspect to victim, this is called:

• necessary transfer

• direct transfer

• absolute transfer

• secondary transfer

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

• direct transfer

• absolute transfer

• source transfer

• secondary transfer

When fibers are transferred directly from victim to suspect or suspect to victim, this is called:

• necessary transfer.

• direct transfer

• absolute transfer.

• None of these choices.

secondary transfer

• The transfer of evidence such as a fiber from a source (such as a carpet) to a person (suspect), and then to another person (victim)

• the passing of evidence, such as fiber, from victim to suspect or vice versa

• things like clothing, carpets, and upholstery

• fibers that have been spun together

How is hair or fiber evidence collected?

• Using forceps.

• Using sticky tape.

• Using a vacuum.

• All of the above.