Forensic Fiber Analysis

Which of the following are ways to collect fiber evidence?

• vacuuming

• adhesive tape

• dusting

• forceps

• burning

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.

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

• Synthetic

• Natural

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-PS1-4

What is the primary purpose of using a microscope in hair analysis?

• To measure the length of the hair

• To identify the color of the hair

• To examine the structure and characteristics of the hair

• To weigh the hair

Which technique is commonly used for collecting fiber evidence at a crime scene?

• Vacuuming

• Burning

• Washing

• Cutting

Fiber evidence can be transferred between individuals through which process?

• Airborne transmission

• Chemical reaction

• Telepathy

• Contact or physical interaction

Which of the following is a common method for analyzing fiber evidence in forensic science?

• Microscopic examination

• DNA sequencing

• Gas chromatography

• X-ray diffraction

What is the primary reason fibers are considered valuable evidence in forensic investigations?

• They are unique to each individual

• They can be easily destroyed

• They are resistant to environmental changes

• They can link a suspect to a crime scene

Which type of fiber is most likely to melt when exposed to a flame during a burn test?

• Cotton

• Wool

• Nylon

• Silk

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4