Hair and Fiber Analysis

The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil in our example)

• Cuticle

• Medulla

• Cortex

The tough outer covering of a hair composed of overlapping scales. (outer part of pencil in our example)

• Cortex

• Cuticle

• Medulla

The hair follicle is dormant (not growing hair anymore) and hairs are easily lost during which stage of the hair life cycle?

• Anagen

• Telogen

• Catagen

• Metagen

The following medulla pattern is called

• fragmented 
• continuous
• interrupted

The picture shows a __________ hair.

• human

• animal

Tags

NGSS.MS-LS1-1

Fibers are classified as either:

• natural fibers or synthetic fibers.
• polymers or synthetic fibers.
• acrylic fibers or plant fibers.
• olefins or synthetic fibers

Tags

NGSS.MS-PS1-3

Did this hair fall out naturally, or was it forcibly removed?

• Fell out naturally
• Was forcibly removed

What kind of hair is this?

• Human

• Animal

Natural fibers come from:

• animals.

• plants.

• minerals.

• All of these choices.

Which of the following statements is not true about fiber evidence?

• To determine what it is you can burn it

• Looking under a microscope you can tell natural from synthetic

• Different weave patterns exist because different fabric has different purposes

• Fibers are considered individual evidence