Fiber Evidence Review

Fibers that have been spun together

• textile

• yarn

• fiber twist

• mineral fiber

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

Early collection of fibers in an investigation is critical. Within 24 hours, an estimated __% of fibers may have been lost from a crime scene.

• 85%

• 50%

• 95%

• 25%

When studying fibers, a forensic scientist will ask questions about

• type of fiber

• color of fiber

• number of fibers found

• all of the above

Fiber evidence is gathered with

• tape, vacuums, and fingers

• tape, forceps, and fans

• tape, vacuums, and forceps

• vacuums, fingers, and water

Which of the following is a nondestructive method of analyzing fibers?

• microscopy

• burning

• chromatography

• solvents

Fibers can be classified as

• natural or synthetic

• animal or mineral

• polymer or synthetic

• natural or mineral

Tags

NGSS.MS-PS1-3

Natural fibers come from animals, plants, and

• fungi

• minerals

• bacteria

• detritis

A disadvantage of _____ fibers is that they can deteriorate in bright sunlight and melt at a lower temperature.

• natural

• synthetic

Tags

NGSS.MS-PS3-3