Forensics Unit 4 - Fiber Analysis

The smallest indivisible unit of a textile is a...

• Fiber
• Fabric
• Yarn
• Thread

Fibers are considered what kind of evidence? 

• Individual
• Class
• Direct
• Indirect

Natural fibers can be harvested from

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

The name for man-made fibers is:

• processed fibers
• synthetic fibers
• natural fibers
• modified fibers

Tags

NGSS.MS-PS1-3

What are the 2 types of Fibers?

• Yarn and textiles
• natural and synthetic 
• sheep and wool
• carpet and clothing 

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

• bamboo

• hemp

• silk

• cotton

Which of the following is not a synthetic material?

• Nylon

• Wool

• Polyester

• Acrylic

Tags

NGSS.MS-PS1-3

What occurs to natural fibers like plant and animal material during a burn test?

• They melt into a solid substance

• They produce ash

• They do not ignite

• The produce a red residue

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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 ignite or melt?

• color and structure of the residue left after the riber burns

• all of the above

Fibers are an excellent source of trace evidence because

• They are easily transferred from victim to suspect.

• They are often overlooked by a suspect.

• They can be easily collected and stored.

• All of the above.