Pre-lab reading for: Forensic Analysis of Fabrics and Fibers

To be considered a fiber:

• must be made of 2 materials

• woven intro a fabric

• the length must be many times greater than the diameter

• be made of a polymer

Fibers are considered:

• individual evidence

• class evidence

• both class and individual evidence

• to point to a specific person

The more uncommon a fiber is:

• the greater the probative value in court

• the weaker the probative value in court

• the more individual evidence it is

• the harder it is to connect to s suspect

Tags

CCSS.RI.11-12.7

CCSS.RL.11-12.7

CCSS.RL.9-10.7

CCSS.RI.8.7

CCSS.RI.9-10.7

If the fibers found on the suspect are directly from the victim, it is considered:

• indirect transfer

• secondary transfer

• direct transfer

• secondary direct transfer

Fibers from animals, plants, and minerals are considered:

• natural

• synthetic

• cross textured

• direct

Tags

NGSS.MS-PS1-3

Animal fibers are made up of:

• protein strands

• leather-skin

• webbing

• all answers are correct

Plant fibers are made up of:

• synthetic polymers

• cellulose polymers

• soluble materials

• always fixed and rigid

Asbestos while very useful in human applications is not used in many countries anymore because:

• other materials are more useful

• not cost effective

• not available

• it causes cancer when airborne

Tags

CCSS.RI.8.1

CCSS.RI.8.8

CCSS.RL.11-12.1

CCSS.RL.8.1

CCSS.RL.9-10.1

Synthetic fibers are:

• manipulated by man

• polymeric

• tend to have uniform structure

• all answers are correct

Tags

NGSS.MS-PS1-3

Fiber evidence is trace evidence and can be collected by:

• forceps (tweezers)

• tape

• special vacuums

• all answers are correct