Fibers are used in forensic science to create a link between crime and ____________________.
2 points
2
Question 2
2.
Very small fibers are classified as __________ evidence.
8 points
8
Question 3
3.
Type of fiber
Point of origin
length of fibers
color of hair
Location of suspects
color
Possibility of violence
manufacturing machine
Fiber evaluation can show
Fiber evaluation cannot show
2 points
2
Question 4
4.
Which of these is an example of circumstantial evidence?
2 points
2
Question 5
5.
Why is it important to find multiple fibers?
2 points
2
Question 6
6.
_______________ transfer– victim to suspect or suspect to victim directly.
2 points
2
Question 7
7.
The most common type of regenerated fiber, which is derived from celulose and is mostly plant in origin, is rayon.
2 points
2
Question 8
8.
Synthetic polymer fibers, which all originate with petroleum products, are cellulose-based fibers.
2 points
2
Question 9
9.
Polyester has properties similar to nylon except it is easily broken down by light and concentrated acid.
2 points
2
Question 10
10.
A disadvantage of synthetic fibers is that they can deteriorate in bright sunlight and melt at a lower temperature than natural fibers.
2 points
2
Question 11
11.
Fibers are woven into textiles or fabrics.
2 points
2
Question 12
12.
Fibers that have been spun together are called:
2 points
2
Question 13
13.
The transfer of evidence such as a fiber from a source to a person, then to another person, is called:
2 points
2
Question 14
14.
Fiber evidence is gathered with:
2 points
2
Question 15
15.
Two methods that can analyze fibers without damaging them are:
2 points
2
Question 16
16.
Fibers are classified as either:
2 points
2
Question 17
17.
Natural plant fibers are produced by:
2 points
2
Question 18
18.
All plant fibers share the common polymer that is:
2 points
2
Question 19
19.
Until the nineteenth century, only plant or animal fibers were used to make clothing and textiles. Half the fibers produced today are synthetic. They are categorized as:
2 points
2
Question 20
20.
The number of threads that are packed together for any given amount of fabric is known as _________________________________.
2 points
2
Question 21
21.
The most common form of fiber transfer to be encountered at a crime scene is _______________ of a textile.
2 points
2
Question 22
22.
At times, most fibers recovered from a victim are found in the victim's ____________________.
2 points
2
Question 23
23.
Natural fibers come from animals, plants, and ________________ that are mined from the ground.
2 points
2
Question 24
24.
Using the fiber burn analysis key, if a fiber does not smell like hair and it ceases to burn then it is _________________.
2 points
2
Question 25
25.
Mohair is hair from __________ (animal).
2 points
2
Question 26
26.
Celenese is cellulose chemically combined with ______________.
2 points
2
Question 27
27.
_____________________ has surface scales, hollow or partial hollow core and fibers up to 3 inches long.
2 points
2
Question 28
28.
What type of weave pattern is pictured?
2 points
2
Question 29
29.
What type of weave pattern is pictured?
10 points
10
Question 30
30.
Essay: Write the answer to one essay question in the space provided below.
FCA’s 1. Write in complete sentences and paragraph form.
2. Use Chapter 4 terminology to answer questions(example: fabric, twill, etc...).
3. Provide inferences, other thoughts, or personal experiences in your answer whenever possible.
A) A fiber is found on the victim, explain why this evidence alone is not enough to convict a suspect.
B) Choose a weave pattern, explain how the pattern is created and strengths/weaknesses of the weave.