Microscopes and Trace Evidence

Question 1

The final growth phase

Answer 1

telogen, the hair naturally falls out of the skin

Question 2

Cuticle

Answer 2

the tough outer covering of a hair that i composed of overlapping scales

Question 3

Glass that has been heat- or chemically treated to break into many small pieces

Answer 3

Tempered Glass

Question 4

Automobile coating that provides shine and fade resistance

Answer 4

clear coat

Question 5

Cortex

Answer 5

region of hair located outside the medulla that contains molecules of pigment

Question 6

Borosilicate Glass

Answer 6

type of glass used in automobile headlights due to its heat resistance

Question 7

Basecoat

Answer 7

automobile coating that provides the color

Question 8

Automobile coating that smooths out imperfections before color is applied

Answer 8

primer

Question 9

Laminated Glass

Answer 9

type of glass in windshields, is a double layer of glass health together by plastic

Question 10

microscope used when viewing small specimens with a 40x-1500x magnification

Answer 10

compound

Question 11

medulla

Answer 11

the central core of a hair

Question 12

Types of medulla

Answer 12

Interrupted- uneven medulla; Fragmented- even spacing; Continuous- Straight line

Question 13

stereo microscope

Answer 13

used when viewing small details on larger items; image is only magnified up to 125x but is 3-d and remains right side up

Question 14

electrocoat

Answer 14

coating that provides corrosion resistance

Question 15

hair structure that is contained in the follicle

Answer 15

root

Question 16

as the magnification increases

Answer 16

the field of view decreases

Question 17

how to find the total magnification of an image

Answer 17

magnification of the ocular lens x power of the objective lens

Question 18

compound microscope images;

Answer 18

real, inverted, magnified

Question 19

stereoscope images;

Answer 19

upright, 3D view, only magnified up to 125x

Question 20

three parts of strand of hair

Answer 20

root, shaft, tip

Question 21

three parts of hair shaft

Answer 21

medulla, cortex, cuticle

Question 22

what features of animal hair makes it distinguishable

Answer 22

animals have larger and more unique medulla pattern

Question 23

anagen

Answer 23

when your hair grows and forms a new shaft

Question 24

catagen

Answer 24

hair grows very slowly

Question 25

telogen

Answer 25

rest stage and then falls out

Question 26

where will you find the best source of DNA in hair?

Answer 26

the root

Question 27

how is soil prepared for analysis

Answer 27

dried, the color changes and it kills anything in it

Question 28

characteristics of natural fiber being burnt

Answer 28

ash is soft, and odor is like paper

Question 29

characteristics of animal fibers being burnt

Answer 29

self extinguishing, smells like burnt hair, black hollow bead, curls away from flame

Question 30

best way to find out if two fabrics share an origin?

Answer 30

piece it together

Question 31

composition of paint

Answer 31

pigment, solvent, binder

Question 32

4 paint layers

Answer 32

electro coat, primer, base coat, clear coat.

Question 33

electro coat primer

Answer 33

provide corrosion resistance

Question 34

primer surfacer

Answer 34

smooths out imperfections

Question 35

base coat

Answer 35

color

Question 36

clear coat

Answer 36

improves durability and appearance

Question 37

scalp hair

Answer 37

consistent diameter, uniform distribution of color

Question 38

pubic hair

Answer 38

short, curly, wide range diameter, continuous medulla

Question 39

beard hair

Answer 39

triangular shape, coarse, blunt tips