Fiber and Animal Hair

When fibers are transferred directly from victim to suspect or suspect to victim, this is called

• necessary transfer
• direct transfer
• absolute transfer
• secondary transfer

Fiber evidence is gathered with 

• vacuums
• tape or lint roller
• forceps
• all choices correct

Natural fibers can be harvested from

• plants and animals only
• plants, animals and minerals only
• animals only
• plants only

All of the following are characteristics of a synthetic fiber EXCEPT

• The are petroleum products.
• They are manufactured.
• They are produced by plants, animals and other organisms.
• They are used for the production of carpet fibers.

Tags

NGSS.MS-PS1-3

All of the following are true about fiber evidence EXCEPT

• It is possible to determine the composition and quantrities of its chemical makeup using gas chromatography and mass spectrophotometer.
• It is generally considered to be class evidence.
• It can be used to place a person at a crime scene at a specific time.
• It is analyzed using microscopes.

Which of the following fabrics is NOT made up of plant material?

• linen
• rayon
• silk
• cotton

Cashmere comes from

• flax plants
• sheep
• goats
• rabbits

Cotton is frequently the least helpful fiber because

• it is so common
• it varies too much to be reliable
• it can change during processing
• it is too rare

Which feature of hair is MOST important in making a species identification?

• scale pattern

• follicle shape

• bulb size

• color

The medullary index of human hair is ________ the medullary index for most other animals

• less than

• greater than

• the same as

• equal to

Tags

NGSS.MS-LS4-2