Fiber Evidence

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

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

• microscopy

• burning

• chromatography

• solvents

If many fibers were found at a crime scene, this would tell the investigators

• there was a struggle or violence

• there was a fire

• there was a cheap textile used

Fibers found at a crime scene classify as what type of evidence?

• biological

• direct

• class

• individual

Which type of fiber is shown?

• wool

• silk

• cotton

• rayon

Fiber evidence can be transferred between individuals through which process?

• Airborne transmission

• Chemical reaction

• Telepathy

• Contact or physical interaction

Fiber evidence can be used to establish a link between a suspect and a crime scene through which principle?

• Transfer principle

• Reflection principle

• Absorption principle

• Gravity principle

Which technique is used to compare the color and diameter of fibers?

• Chromatography

• Tensile testing

• Microscopy

• Spectroscopy

What is the primary reason for collecting fiber evidence early in an investigation?

• Fibers degrade quickly

• Fibers can be easily contaminated

• Fibers are often overlooked

• Fibers can be lost due to environmental factors