WorksheetsFiber Test Bank
Total questions: 63
Worksheet time: 35mins
Which of the following observations are used to help identify a specific fiber?
smell of the burned fiber
on contact with the flame, does the fiber coil or melt?
color and structure of the residue left after the riber burns
all of the above
Natural fibers can be harvested from
plants and animals
only from plants
only from animals
plants, animals, and minerals
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.
What is Loccard's Exchange Principle?
Perpetrators always leave evidence behind.
Every contact leaves a trace.
All touches leave evidence.
Long, violent confrontations leave evidence.
Fiber does NOT fall into what type of evidence?
Individual
Class
Trace
Circumstantial
A fiber is collected at a crime scene. When viewed under a compound microscope, what two traits would indicate that the fiber was a human hair and not a piece of fiber obtained from an article of clothing? (Choose 2)
the presence of a cuticle
a medullary index of 0.33 or less
a wide diameter
its ability to dissolve in water
a fiber is...
A tool to make dishes clean
A thread like piece of material is the smallest unit of a woven fabric
Small amounts of hair, skin, fabric, or any other material which may link a suspect to a crime scene.
Natural fibers can be harvested from
plants and animals
only from plants
only from animals
plants, animals, and minerals
All of the following are characteristics of a synthetic fiber except
They are formed by combining monomer compounds into polymer molecules.
They are man-made.
They are used in the production of carpet fibers.
They do not contain any natural fibers.
A characteristic of natural fibers is that they
are stronger than synthetic fibers
melt at a lower temperature than synthetic fibers
are affected by microscopic organisms
will not break down when exposed to bright light
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.
Fiber does NOT fall into what type of evidence?
Individual
Class
Trace
Circumstantial
Which of the following fabrics is NOT made up of plant material?
linen
hemp
silk
cotton
Which of the following is not a synthetic material?
Nylon
Wool
Polyester
Acrylic
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
Synthetic fibres are biodegradable.
True
False
Nylon is a synthetic fibre.
True
False
The threads or yarns are made from thin fluffy strands called fibres.
True.
False
Synthetic fibres are obtained from animals.
False
True
Synthetic fibres are obtained from animals.
False
True
Synthetic fibres are costlier than natural fibres.
True
False
Angora wool is obtained from a species of rabbit.
True
False
Polyester is a natural fibre.
False
True
Fabrics can be made from yarns by weaving or knitting.
True
False
Cotton clothes are less comfortable than polyester clothes.
False
True
Wool and silk are animal fibres.
True
False
All fabrics are obtained from plants.
False
True
The process of removing seed from cotton is called ginning.
True
False
The processing of cotton involves the following steps- picking, (a) and spinning.
Which fibre is used for making gunny bags?
wool
Jute
Silk
Cotton
Jute is popularly known as Golden fibre.
True
False
Jute plant grows best in
alluvial soil
black soil
red soil
Cotton balls are
Leaves of cotton plant
Stem of cotton plant
seeds of cotton plant
Fruits of cotton plant
The ______ plant bears large leaves and bears white or yellow fruits.
Silk
Wool
Cotton
Nylon
We should wear _______ fabrics while burning crackers.
Silk
Wool
Cotton
Nylon
Identify the weave pattern for A
silk
twill
basket
plain
Identify the weave pattern
plain
basket
twill
satin
knitted
Identify the fiber.
This fiber has imperfect edges because it is a natural fiber. This is a plant fiber from a seed.
This fiber has smooth and uniform edges because it is a manufactured fiber. This fiber is synthetic because it is manufactured from petroleum products.
This fiber has imperfect edges because it is a natural fiber. This is an animal fiber from hair.
Identify the fiber
This fiber has imperfect edges because it is a natural fiber. This is an animal fiber from hair.
This fiber has smooth and uniform edges because it is a manufactured fiber. This fiber is a regenerated fiber, meaning that it is made from modified natural fibers. It is almost transparent in color and consistent throughout.
This fiber has imperfect edges because it is a natural fiber. This is a plant fiber from a seed.
This fiber has smooth and uniform edges because it is a manufactured fiber. This fiber is synthetic because it is manufactured from petroleum products.
Identify the weave pattern (2 wefts over 2 warps and under 2 warps)
plain
basket
twill
satin
Check all descriptions appropriate for: Cotton
Synthetic
Natural
Plant
Animal
Mineral
Check all descriptions appropriate for: Polyester
Synthetic
Natural
Plant
Animal
Mineral
Down feathers would be an example of
animal fiber
plant fiber
mineral fiber
synthetic fiber
What part of the plant does flax, hemp, and jute come from?
Leaf
Stem
Fruit
Seed
What part of the plant does Sisal and Manila fibers come from?
Leaf
Stem
Fruit
Seed
Which of the following is an example of animal fibers?
cotton
silk
linen
fur
coir (coconut)
