WorksheetsGlass Analysis
Total questions: 31
Worksheet time: 8hrs 45mins
Name
Class
Date
1.
Because glass is a solid with random arrangement of motionless atoms, it is called:
a)
plasma
b)
obtuse
c)
amorphous
d)
frozen
2.
Glass which is strengthened by introducing stress through rapid heating and cooling of it's surface.
a)
Soda Lime Glass
b)
Leaded Glass
c)
Tempered Glass
d)
Laminated Glass
3.
When a bullet penetrates a panel of glass, it leaves a crater shaped hole that
a)
is wider on the entrance side
b)
is smaller on the entrance side
c)
Forms randomly
d)
Both B & C
4.
The larger opening of a crater-shaped hole in glass made be the penetration of a projectile indicates
a)
The exit side of the glass
b)
The entrance side of the glass
c)
The projectile was traveling at a low velocity
d)
That a bullet made a openig
5.
Two sheets of ordinary glass bonded together with a plastic film
a)
Soda Lime Glass
b)
Leaded Glass
c)
Tempered Glass
d)
Laminated Glass
6.
The ratio of velocity of light in a vacuum to that in another medium (like water) is called the:
a)
birefringence
b)
refractive index
c)
refractive quotient
d)
comparison index
7.
Which of these may be component of standard glass?
a)
sand
b)
lime
c)
sodium oxide
d)
all of these
8.
Which type of glass is used to make car windshields?
a)
tempered
b)
laminated
c)
acrylic
d)
standard
9.
A crack in glass that moves outward from the point of impact like spokes on a wheel is called a:
a)
compound fracture
b)
concentric fracture
c)
spoke fracture
d)
radial fracture
10.
Which type of fracture is shown by letter B?
a)
radial
b)
concentric
c)
birefrigent
d)
none of these
11.
Which of these is part of using the 3R rule to determine the direction of impact?
a)
radial crack
b)
right angle
c)
reverse side of force
d)
all of these
12.
In reference to the diagram, what is the correct sequence of impact
a)
A first
b)
B first
c)
A and B simultaneously
d)
Sequence impossible to determine
13.
The most common glass, which is inexpensive, and easy to melt and shape
a)
Soda lime glass
b)
Leaded glass
c)
Tempered glass
d)
Laminated glass
14.
What will NOT be visible if a glass and a liquid has the same refractive index?
a)
Conchoidal Lines
b)
Becke Lines
c)
Fracture Lines
d)
Radial Lines
15.
The bright halo that appears near the border of a glass particle that is immersed in a liquid of a different refractive index is called the:
a)
border line
b)
refractive line
c)
Becke line
d)
immersion line
16.
What is the main ingredient in ordinary glass?
a)
(a) soda
b)
(b) lime
c)
(c) metal oxides
d)
(d) sand
17.
Glass evidence is:
a)
class
b)
individual
c)
direct
d)
both class and individual
18.
The primary ingredients in glass are carbon dioxide and water
a)
true
b)
false
19.
Visible light is the only part of the electromagnetic spectrum that humans can detect.
a)
true
b)
false
20.
Which one is not one of the physical states of matter mentioned in your book? (although I disagree)
a)
solid
b)
liquid
c)
vapor (gas)
d)
plasma
21.
Which of the following is not an intensive property?
a)
boiling point
b)
density
c)
refractive index
d)
weight
22.
What is the only way to make a glass fragment individual and not class evidence?
a)
physical fit to the broken pieces
b)
density match
c)
same soil type
d)
Becke line match
23.
Glass will break first on the weaker side, the side:
a)
opposite the strike. Radial fractures will result
b)
opposite the strike. Concentric fractures will result
c)
on the same side as the strike. Radial fractures will result.
d)
on the same side as the strike. Concentric fractures will result.
24.
What is the formula for density?
a)
mass divided by volume
b)
volume multiplied by mass
c)
volume divided by mass
d)
mass multiplied by volume
25.
Can glass stretch at all?
a)
yes, slightly and then it will break
b)
no, glass breaks immediately
26.
A faster projectile will create...
a)
tighter concentric circles
b)
long radial fractures
c)
short radial fractures
d)
widely spaced concentric circles
27.
Which is not a way to determine the order of holes from a projectile?
a)
the size of the hole
b)
radial fracture lines
c)
concentric fracture patterns
d)
all of these
28.
Which is not a way to package glass evidence?
a)
largest pieces first using gloves and wrapped in padding
b)
identify type and separate each piece accordingly
c)
note any trace evidence on the glass and collect it before packaging
d)
photograph and label each piece before packaging
29.
In the report about the fragment pictured, the projectile came from the kitchen to the outside of the house. using the glass fracture, the lab tech determines that the kitchen side is the
a)
top
b)
bottom
c)
left
d)
right
30.
Which is not a physical property
a)
rust
b)
density
c)
mass
d)
melting point
31.
different wavelengths bend at different angles. this is called ....
a)
dispersion
b)
reflection
c)
refraction
d)
frequency
100 %
