Forensic Science - Fabrics

Multiple Choice

Why is it important to identify and describe weave patterns of textile samples in forensic science?

• To determine the origin of the textile in criminal investigations

• To improve the quality of textile manufacturing

• To enhance the color of fabrics

• To increase the cost of textile production

Multiple Choice

Why is the collection of fibers within 24 hours critical in a forensic investigation?

• Because fibers degrade quickly after 24 hours

• Because fibers become invisible after 24 hours

• Because fibers are only present for a few minutes

• Because fibers are not important evidence

Multiple Choice

Which of the following can fiber evaluation reveal during a forensic investigation?

• Type of fiber

• Color

• Possibility of violence

• All of the above

Fill in the Blanks

Weaving spun fibers together produces

and many textiles.

Multiple Select

Which of the following are common methods used to analyze fibers in forensic science?

• Microscopy

• Infrared spectroscopy

• DNA sequencing

• Chemical structure analysis

Multiple Choice

Which fiber produces a small amount of light ash residue when burned, according to the Fiber Burn Analysis Key?

• Rayon

• Cotton

• Wool

• Silk

Multiple Choice

Which of the following fibers can be identified by the presence of diagonal lines that intersect under a microscope?

• Wool

• Cotton

• Acrylic

• Hemp

Fill in the Blanks

Fill in the blank: Crimes can be solved by comparing fibers found on different suspects with those found at the

scene.

Multiple Select

Select all the animals from the images that are sources of natural fibers used in textiles.

• Sheep

• Camel

• Rabbit

• Llama

Multiple Choice

Which animal fibers are commonly used in textiles?

• Wool from sheep, Cashmere and mohair from goats, Angora from rabbits, Hair from alpacas, llamas, and camels

• Cotton from plants, Silk from silkworms, Nylon from chemicals

• Polyester from petroleum, Rayon from wood pulp, Linen from flax

• Leather from cows, Fur from foxes, Feathers from birds

Fill in the Blanks

Silk is obtained from the cocoons of the

moth.

Multiple Choice

What makes silk from caterpillar cocoons different from other animal fibers?

• It is longer and not as easily shed

• It is more brittle over time

• It is dissolved by strong acids

• It absorbs water easily

Multiple Select

Which of the following are properties of plant fibers?

• Can absorb water

• Are insoluble in water

• Are resistant to damage from harsh chemicals

• Can be dissolved by strong acids

Multiple Choice

_______ is an example of a synthetic fabric.

• Wool
• Silk
• Cotton
• Nylon

Multiple Choice

Which of the following plant fibers is most commonly used in textiles?

• Cotton

• Coir

• Hemp

• Manila

Multiple Select

Which of the following are mineral fibers?

• Fiberglass

• Asbestos

• Rayon

• Cotton

Fill in the Blanks

is the basis for synthetic polymer fibers.

Multiple Choice

_______ is an example of a synthetic fabric.

• Wool

• Silk

• Cotton

• Nylon

Match

Match the following

• Natural Materials

• Synthetic Materials

Materials that are only found in nature.

Materials that are created by humans.

Natural Material Image

Synthetic Material Image

• Materials that are only found in nature.

• Materials that are created by humans.

• Natural Material Image

• Synthetic Material Image

Drag and Drop

A natural material is ​

Placeholder

while a synthetic material is ​

Placeholder

Drag these tiles and drop them in the correct blank above

produced by the earth

produced by man.