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Forensic Hair & Fiber Quiz

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About this activity

Hair and fiber evidence basics.

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Forensic Hair & Fiber Quiz
 

Forensic Hair & Fiber QuizOnline version

Hair and fiber evidence basics.

by Disha Doddamani
1

What is direct transfer of fibers in forensics?

2

What is secondary transfer in fiber analysis?

3

Which technique is nondestructive for fiber analysis?

4

Which nondestructive method uses infrared spectroscopy?

5

What is MSP in fiber analysis?

6

FTIR in fiber analysis stands for?

7

What does a fiber burn analysis identify?

8

Synthetic fibers typically show what burn trait?

9

Natural fibers often do what when burned?

10

What is class evidence in fiber analysis?

11

Which items can fibers come from at a scene?

12

What is cross section in fiber microscopy?

13

What does thread count measure?

14

What is cross transfer evidence called?

15

Which fiber type is natural?

16

Which test is destructive?

17

Fiber evidence classification depends on origin?

18

What instrument analyzes molecular groups in fibers?

19

What is the goal of fiber sampling?

20

Which is a common observation under microscope?

21

What counts as trace evidence in forensics?

22

What is a common source of natural fibers?

23

What does a burn chart help with?

Feedback

Direct transfer is movement of fibers directly from one person to another.

Secondary transfer involves a source to suspect and then to the victim (or vice versa).

Polarizing light microscopy analyzes fibers without destroying them.

Infrared spectroscopy identifies molecular groups via IR absorption.

MSP combines microscopy with UV/visible light spectroscopy for tiny samples.

FTIR uses light absorption to identify molecular groups in fibers.

Burn characteristics help distinguish natural from synthetic fibers.

Synthetic fibers often melt and emit a chemical odor when burnt.

Natural fibers tend to burn and ash with a wood-like smell.

Fibers generally link to a source or type, not a unique individual.

Fibers may come from clothing, carpet, furniture, etc.

Cross section appearance helps characterize fiber type.

Thread count sums warp and weft to gauge weave density.

Locard’s principle explains transfer of fibers between objects.

Cotton is a natural plant fiber; others are synthetic.

Burning destroys the fiber to observe char/odor.

Natural fibers are often biological; synthetic are physical evidence.

FTIR identifies molecular groups via infrared absorption.

Non-destructive methods preserve evidence for further testing.

Microscopy notes color, diameter, and cross-section pattern.

Tiny fibers can link to an environment or item.

Cotton comes from plants, unlike synthetic polymers.

Burn charts compare how fibers char and melt to identify type.

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