stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
The Study of Fibers Flashcards | StudBud
Explore
/
The Study of Fibers
The Study of Fibers
29 terms
·
StudBud Administration
·
20 plays
Imported from external platform
Flashcards
29 cards
F
Practice quiz
P
Host live
L
Questions
29
Answers
1
Which type of mineral fiber is used for insulation due to its fire-resistant qualities?
silk
cotton
asbestos
nylon
2
Name 2 methods of fiber examination that does NOT destroy the fiber.
burn and chemical tests
science and math tests
SAT and ACT tests
comparison microscope and polarizing light microscopy/infrared spectroscopy
3
What 3 methods are used to locate and collect fiber evidence from a crime scene?
tong, Ziploc bag, and tape
tweezers, tape, and vacuum
tweezers, glue, and tong
tape, magnifying glass, and cotton swab
4
Secondary transfer of fiber evidence is from:
source to person to 2nd person
blood stain on shoes to a rug
lifting fingerprints on the door handle
the suspect's sweater to the victim
5
The warp pattern is vertical (up and down). The weft pattern is horizontal (left and right).
True
False
6
What is a thread count?
The number of columns
The number rows
The number of threads in a square inch of fabric
The number of Super Bowl rings
7
Yarns are:
protein filaments that grow from follicles
made up of millions of stars
seed-hair fibers made mostly of cellulose
made from many fibers that are spun together
8
What is the purpose of mineral fibers?
used as fillers and fire-resistant insulation
used as a pawn
used for making bricks and containers
used for making s'mores
9
Fibers are:
smallest unit of a textile
unique patterns made by friction ridges
many fibers spun together
molecules that carry genetic info.
10
Satin weave pattern has a shiny appearance and it's super stretchy.
False
True
11
Direct transfer of fiber is passing evidence from:
one person to another
carpet fiber to victim to suspect
dog hair on the carpet to the couch to the table
blood on the victim's hand to the wall
12
Name 3 examples of synthetic fibers:
cotton, clay, and sand
rayon, acetate, and polyester
rattan, flax, and silk
animal, plants, and mineral
13
Synthetic fibers have:
twist and hairlike
no cuticle or twist; straight diameter
protein and cellulose
cuticle and protein
14
Natural animal fibers have:
cuticle
nylon
twist
cellulose
15
Why is rayon considered a regenerated fiber?
because it produces new fibers
because ray eats too much fiber
because it replaces and restores damaged cells
because it's derived from cellulose and it imitates natural fibers
16
Twill weave pattern has a diagonal appearance (3 over, under 1), not stretchy.
True
False
17
Are fibers class or individual evidence?
Class
Individual
Witness
Combined
18
Name 3 examples of natural fibers in forensic science
hair, carbs, and sugar
oats, avocado, and lentils
animal, plants, and mineral
spandex, arylic, and rayon
19
Threads are:
made up of multiple fibers
lifespan of an individual
smaller units within a larger organization
smallest unit of length
20
Synthetic fibers are man-made fibers:
False
True
21
Leno weave pattern has a knit-like appearance, stretches in one directionn.
False
True
22
There are 5 weave patterns: basket, leno, satin, plain, twill
True
False
23
Name two examples of animal fibers:
flax and rayon
acrylic and poly
hemp and asbestos
angora and mohair
24
Natural plant fibers have:
twist
protein
leaves
cuticle
25
Name 2 out of 4 science techniques for analyzing fibers.
chemical and blood tests
comparison microscope and burn test
ballistics test and running fingerprints
burn and DNA tests
26
Natural fibers are made of natural polymers
False
True
27
Textiles are:
made up of green birds aka the Eagles
made up to multiple threads
made up of multiple-choice questions
made up of multiple cells
28
What are some different characteristics of fibers that can be identified at a crime scene?
type & thickness
natural or synthetic
all of the above
color & # of fibers (many or few)
29
What is the role of fibers as a source of evidence in forensic investigation?
possibility of violence, location of suspects, and point of origin
can eliminate the Giants from the playoffs
contains important information about your future
it can confirm or disprove a person's identity