WorksheetsGlass
Total questions: 19
Worksheet time: 18mins
Name
Class
Date
1.
Which of the following is not a common ingredient of glass?
a)
Silica
b)
Carbon Dioxide
c)
Calcium Oxide
d)
Sodium Oxide
2.
What type of solid is seen in the picture?
a)
Amorphous solid
b)
Regular solid
c)
Liquid
d)
Gas
3.
Refraction is the change in the direction of light as it changes ___ when moving from one medium into another.
a)
Shape
b)
Distance
c)
Speed
d)
Structure
4.
Bits of glass can fly backwards. This is called:
a)
Backtrace
b)
Backspatter
c)
Backflash
d)
Backscatter
5.
Which of the following is the correct formula for calculating the density of glass?
a)
D= m/V
b)
D= V/m
c)
D= m x V
d)
D= 2mV
6.
The earliest human-made glass objects date back to about ___ Egypt.
a)
1000 BC
b)
1500 BC
c)
2000 BC
d)
2500 BC
7.
Which glass break was made first?
a)
A
b)
B
8.
What type of fracture is this?
a)
Becke
b)
Conchodial
c)
Concentric
d)
Radial
9.
What are two ways for determining the refractive index of glass?
a)
Laser; Submersion
b)
Laser; Fracture
c)
Submersion; Fracture
d)
Fracture; Conchodial
10.
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
11.
What is the 1st step for handling glass at a crime scene?
a)
Identify and photograph any glass samples before moving them.
b)
Collect the largest fragments that can be reasonably collected
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
12.
What is the 2nd step for handling glass at a crime scene?
a)
Note trace evidence such as skin, hair, blood, or fibers.
b)
Collect the largest fragments that can be reasonably collected
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
13.
What is the 3rd step for handling glass at a crime scene?
a)
Note trace evidence such as skin, hair, blood, or fibers.
b)
Package all materials collected to maintain the chain of custody
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
14.
What is the 4th step for handling glass at a crime scene?
a)
Note trace evidence such as skin, hair, blood, or fibers.
b)
Package all materials collected to maintain the chain of custody
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
15.
What is the 5th step for handling glass at a crime scene?
a)
Note trace evidence such as skin, hair, blood, or fibers.
b)
Package all materials collected to maintain the chain of custody
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
16.
What is the 6th step for handling glass at a crime scene?
a)
Note trace evidence such as skin, hair, blood, or fibers.
b)
Package all materials collected to maintain the chain of custody
c)
Identify the outside and inside surface of any glass
d)
If multiple panes are involved, make a diagram
17.
What country regarded its glass production as a state secret?
a)
Egypt
b)
England
c)
Germany
d)
Venice
18.
If light passes into a less dense medium, its direction will bend ___ the normal.
a)
Away
b)
Towards
c)
Equal with
19.
What type of fracture forms on the same side as the impact?
a)
Radial
b)
Becke
c)
Concentric
d)
Conchodial
100 %
