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Fibers Review

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

Fibers are considered _______ evidence.

a)

Testimonial

b)

Individual

c)

Class

d)

Circumstantial

2.

Fibers can be characterized based on comparisons of:

a)

Chemical Properties

b)

Class Properties

c)

Physical Properties

d)

Both Physical & Chemical Properties

3.

Fibers are usually made up of many _______ twisted or bonded together

a)

Yarns

b)

Threads

c)

Weaves

d)

Filaments

4.

A woven cloth material made of fibers is called a:

a)

Weave

b)

Fabric

c)

Yarn

d)

Filament

5.

Natural fibers come from the following sources EXCEPT:

a)

Man-made

b)

Vegetables

c)

Animals

d)

Inorganic sources

6.

Which of the following is NOT an example of a natural fiber?

a)

Silk

b)

Cashmere

c)

Nylon

d)

Cotton

7.

Which of the following is NOT an example of an artificial (synthetic) fiber?

a)

Wool

b)

Spandex

c)

Rayon

d)

Polyester

8.

________ is a vegetable fiber that is strong, flexible, moisture absorbent, and not shape-retentive.

a)

Asbestos

b)

Spandex

c)

Cotton

d)

Wool

9.

Protein fibers like wool and mohair usually come from:

a)

Vegetables

b)

Polyesters

c)

Minerals

d)

Animals

10.

Examples of mineral fibers include:

a)

Fiberglass

b)

Asbestos

c)

Acetate

d)

Fiberglass & Asbestos

11.

Which of the following are classified as synthetic fibers?

a)

Nylon

b)

Spandex

c)

Polyester

d)

All of the above

12.

A ______ is a continuous strand of fibers or filaments, usually twisted around.

a)

Yarn

b)

Weft

c)

Warp

d)

Fabric

13.

Every weave contains two types of yarns:

a)

Warp & blend

b)

Weft & Blend

c)

Warp & Weft

d)

Weft & Blend

14.

A fabric made up of two or more different types of fibers is called:

a)

Weave

b)

Blend

c)

Yarn

d)

Fabric

15.

Which weave pattern most closely resembles a checkerboard?

a)

Plain

b)

Satin

c)

Twill

d)

Knit

16.

Which of the following is NOT a regular weave pattern?

a)

Twill

b)

Silk

c)

Satin

d)

Plain

17.

In synthetic fibers, a long molecule created by many repeating units all chemically joined together is called:

a)

Monomer

b)

Filament

c)

Polymer

d)

Weave

18.

Synthetic fibers of different sizes and shapes are created by forcing a hot material through:

a)

Funnel

b)

Fabric

c)

Spinneret

d)

Press

19.

In textile manufacturing, there are more than 7,000 different formulas of:

a)

Fabrics

b)

Cotton

c)

Nylon

d)

Dyes

20.

_______ is a method a CSI may use to separate all the dyes from a single fabric for comparative analysis.

a)

Microscopy

b)

Burning

c)

Chromatography

d)

Density Measurement

21.

When clothes are collected at a crime scene, they are stored in separate paper bags

a)

True

b)

False

22.

Tapes should NOT be used to lift fibers off of skin or inanimate objects.

a)

True

b)

False

23.

Fluorescence can be used for spotting fibers as trace evidence.

a)

True

b)

False

24.

Fibers have probative value.

a)

True

b)

False

25.

Match the Definition: When different fibers have different flame colors, odors, smoke or leave different residues

a)

Microscopic Observation

b)

Burning

c)

Chemical Test

d)

Density

e)

Refractive Index

26.

Match the Definition: A measure of the bending of light as it passes through a sample of fabric

a)

Microscopic Observation

b)

Burning

c)

Chemical Test

d)

Density

e)

Refractive Index

27.

Match the Definition: The appearance of a fiber when it is magnified

a)

Microscopic Observation

b)

Burning

c)

Chemical Test

d)

Density

e)

Refractive Index

28.

Match the Definition: When fibers decay or react differently when they are dissolved.

a)

Microscopic Observation

b)

Burning

c)

Chemical Test

d)

Density

e)

Refractive Index

29.

Match the Definition: The mass of a fiber divided by its volume.

a)

Microscopic Observation

b)

Burning

c)

Chemical Test

d)

Density

e)

Refractive Index

30.

Name the weave pattern shown

a)

Knit

b)

Plain

c)

Satin

d)

Twill

31.

Name the weave pattern shown

a)

Knit

b)

Plain

c)

Satin

d)

Twill

32.

Name the weave pattern shown

a)

Knit

b)

Plain

c)

Satin

d)

Twill

33.

Name the weave pattern shown

a)

Knit

b)

Plain

c)

Satin

d)

Twill

34.

The spinneret shape labeled A is called

a)

Dogbone

b)

Octalobal

c)

irregular

d)

trilobal

e)

Round

35.

The spinneret shape labeled B is called

a)

Dogbone

b)

Octalobal

c)

irregular

d)

trilobal

e)

Round

36.

The spinneret shape labeled C is called

a)

Dogbone

b)

Octalobal

c)

irregular

d)

trilobal

e)

Round

37.

The spinneret shape labeled D is called

a)

4-Lobed

b)

Octalobal

c)

irregular

d)

trilobal

e)

Round

38.

The spinneret shape labeled E is called

a)

4-Lobed

b)

Octalobal

c)

irregular

d)

trilobal

e)

Round

39.

The spinneret shape labeled F is called

a)

4-Lobed

b)

Multi-lobed

c)

irregular

d)

trilobal

e)

Round

40.

The spinneret shape labeled G is called

a)

4-Lobed

b)

Octalobal

c)

multi-lobed

d)

trilobal

e)

Round