WorksheetsForensic Hair and Fiber
Total questions: 24
Worksheet time: 15mins
Name
Class
Date
1.
An example of a natural fiber would be:
a)
Silk
b)
Polyester
c)
Spandex
d)
Kevlar
2.
An example of an artificial fiber would be:
a)
Linen
b)
Angora
c)
Polyester
d)
cotton
3.
the tough clear outside covering of a hair shaft is
a)
cuticle
b)
cortex
c)
medulla
d)
polymer
4.
What kind of medulla is this?
a)
Fragmented
b)
Continuous
c)
Interrupted/Intermittent
d)
There is no medulla - Absent
5.
Is this hair from an animal or human?
a)
Human
b)
Animal
6.
Did this hair fall out naturally, or was it forcibly removed?
a)
Fell out naturally
b)
Was forcibly removed
7.
What kind of medulla is this?
a)
Interrupted/Intermittent
b)
Continuous
c)
Fragmented
d)
There is no medulla present - Absent
8.
This is a picture of
a)
A green carpet fiber
b)
An animal hair
c)
A human hair
d)
A Cotton Fiber
9.
The following medullary pattern is called
a)
fragmented
b)
continuous
c)
interrupted/intermittent
d)
There is no medulla present - absent
10.
Cotton is an example of what type of fiber?
a)
Animal/Protein
b)
Plant
c)
Mineral
d)
Synthetic
11.
Fibers are classified as either:
a)
natural fibers or synthetic fibers.
b)
polymers or synthetic fibers.
c)
acrylic fibers or plant fibers.
d)
olefins or synthetic fibers
12.
Natural fibers come from:
a)
animals.
b)
plants.
c)
Neither plants or animals are correct.
d)
Both plants and animals are correct.
13.
A crime scene victim is wearing running shorts. There are some fibers on the victim's legs below the shorts. The fibers on the victim's legs dissolved in hydrochloric acid and so did the fibers that made up her running shorts. The fibers are
a)
Cotton
b)
Nylon
c)
Silk
d)
Wool
14.
Which of these cannot be determined by hair
a)
gender
b)
human or animal
c)
race
d)
manner in which hair was removed (shed or pulled out)
15.
Humans have a _____________ medulla compared to animals.
a)
Thinner
b)
Thicker
16.
We know hair is from a human if…
a)
The medullary index is 0.5 or greater
b)
The medullary index is 0.33 or less
c)
The cuticle is coronal
d)
The medulla is fragmented
17.
When fibers are transferred directly from victim to suspect or suspect to victim, this is called:
a)
necessary transfer.
b)
direct transfer
c)
absolute transfer.
d)
None of these choices.
18.
Which of the following is a natural fiber?
a)
Wool
b)
Polyester
c)
Spandex
d)
Acrylic
19.
The transfer of evidence such as a fiber from a source to a person, and then to another person.
a)
primary transfer
b)
secondary transfer
c)
monomer
d)
polymer
20.
fibers that form the fleece of sheep
a)
Cotton
b)
Leather
c)
Wool
d)
Acrylic
21.
fine lustrous fiber that comes from a cocoon spun by a worm
a)
Flax
b)
Silk
c)
Rayon
d)
Acrylic
22.
What is the most common plant fiber?
a)
Wool
b)
Rayon
c)
Cotton
d)
Polyester
23.
What portion of the hair follicle is shown in this picture
a)
The shell
b)
The root
c)
The cuticle
d)
The cortex
e)
The medulla
24.
Fibers that have spun together are called
a)
a textile
b)
yarn
c)
a mineral fiber
d)
a fiber
100 %
