Question 1

Which type of glass is similar in chemical composition to window glass?

Accepted Answer

A)  borosilicate 
B)  tempered 
C)  lead crystal 
D)  pyrex 
A)  borosilicate 
B)  tempered 
C)  lead crystal 
D)  pyrex B

Question 2

The class characteristics of glass are very limited due to its inert nature.

Accepted Answer

A) True 
 B)False  True

Question 3

Light can refract when it

Accepted Answer

A)  hits a solid surface 
B)  goes from deep to shallow water 
C)  travels from one medium to another 
D)  light never refracts, only reflects 
A)  hits a solid surface 
B)  goes from deep to shallow water 
C)  travels from one medium to another 
D)  light never refracts, only reflects C

Question 4

Soil is generally homogenous is all areas.

Accepted Answer

A) True 
 B)False

Question 5

The basic compound found in all types of glass is

Accepted Answer

A)  silicon oxide 
B)  carbon dioxide 
C)  sulfur dioxide 
D)  silicon dioxide 
A)  silicon oxide 
B)  carbon dioxide 
C)  sulfur dioxide 
D)  silicon dioxide

Question 6

The "3R" rule for determining the direction of force on a broken piece of glass states that when examining a ______________fracture, there is a __________angle formed on the _______________side of the force.

Accepted Answer

A)  right angle, reverse, radial 
B)  radial, reverse, right angle 
C)  radial, right, reverse 
D)  radial, radical, reverse 
A)  right angle, reverse, radial 
B)  radial, reverse, right angle 
C)  radial, right, reverse 
D)  radial, radical, reverse

Question 7

Why is glass often considered class evidence?

Accepted Answer

A)  It has so many categories 
B)  It can only be matched to a type of glass 
C)  There are no tests to identify glass 
D)  It is too small to correctly identify 
A)  It has so many categories 
B)  It can only be matched to a type of glass 
C)  There are no tests to identify glass 
D)  It is too small to correctly identify

Question 8

The bending of a light ray in a medium is called

Accepted Answer

A)  reflection 
B)  refraction 
C)  radiation 
D)  none of these 
A)  reflection 
B)  refraction 
C)  radiation 
D)  none of these

Question 9

The basic ingredient in glass is sodium chloride.

Accepted Answer

A) True 
 B)False

Question 10

Why is glass considered important forensic evidence because

Accepted Answer

A)  a suspect can be unaware that they have it on them 
B)  it does not decay 
C)  it is commonly found at crime scenes 
D)  all of these are reasons 
A)  a suspect can be unaware that they have it on them 
B)  it does not decay 
C)  it is commonly found at crime scenes 
D)  all of these are reasons

Question 11

Tempered glass gets its safety fracture features by

Accepted Answer

A)  special cooling processes during manufacture 
B)  special heating processes during manufacture 
C)  special additives to the mixture 
D)  special stretching processes during manufacture 
A)  special cooling processes during manufacture 
B)  special heating processes during manufacture 
C)  special additives to the mixture 
D)  special stretching processes during manufacture

Question 12

Glass fitted together like a jigsaw puzzle is a fracture match.

Accepted Answer

A) True 
 B)False

Question 13

The two types of fracture lines that can be produced when glass is hit by a foreign object are:

Accepted Answer

A)  longitudinal, circular 
B)  radial, concentric 
C)  wallner, concoidal 
D)  radial, concoidal 
A)  longitudinal, circular 
B)  radial, concentric 
C)  wallner, concoidal 
D)  radial, concoidal

Question 14

Which of the following is not a common physical property of glass.

Accepted Answer

A)  color 
B)  refractive index 
C)  thickness 
D)  all are common properties 
A)  color 
B)  refractive index 
C)  thickness 
D)  all are common properties

Question 15

Tempered glass is heated to 15000C to achieve its consistency.

Accepted Answer

A) True 
 B)False

Question 16

Glass can be individualized evidence when it is

Accepted Answer

A)  found on a suspect who is linked to the scene 
B)  found to have the same refractive index as an exemplar 
C)  matched like a puzzle piece to a broken window 
D)  matched to an exemplar by density analysis 
A)  found on a suspect who is linked to the scene 
B)  found to have the same refractive index as an exemplar 
C)  matched like a puzzle piece to a broken window 
D)  matched to an exemplar by density analysis

Question 17

The line that appears to be formed at the boundary between two different refractive indices and disappears if two substances has the same refractive index is called the ____________ line.

Accepted Answer

A)  Bork line 
B)  Becke line 
C)  Bruning line 
D)  None of the above 
A)  Bork line 
B)  Becke line 
C)  Bruning line 
D)  None of the above

Question 18

Pyrex has what additive to make it have its characteristic properties?

Accepted Answer

A)  silicon dioxide 
B)  boron 
C)  lead oxide 
D)  soda lime 
A)  silicon dioxide 
B)  boron 
C)  lead oxide 
D)  soda lime

Question 19

The microscope is used to examine glass pieces is called a

Accepted Answer

A)  hot-stage 
B)  stereo 
C)  compound 
D)  comparison 
A)  hot-stage 
B)  stereo 
C)  compound 
D)  comparison

Question 20

HPLC is used to separate and display some f the common components of soils.

Accepted Answer

A) True 
 B)False

Exam 22: Glass and Soil

Which type of glass is similar in chemical composition to window glass?

The class characteristics of glass are very limited due to its inert nature.

Light can refract when it

Soil is generally homogenous is all areas.

The basic compound found in all types of glass is

The "3R" rule for determining the direction of force on a broken piece of glass states that when examining a ______________fracture, there is a __________angle formed on the _______________side of the force.

Why is glass often considered class evidence?

The bending of a light ray in a medium is called

The basic ingredient in glass is sodium chloride.

Why is glass considered important forensic evidence because

Tempered glass gets its safety fracture features by

Glass fitted together like a jigsaw puzzle is a fracture match.

The two types of fracture lines that can be produced when glass is hit by a foreign object are:

Which of the following is not a common physical property of glass.

Tempered glass is heated to 15000C to achieve its consistency.

Glass can be individualized evidence when it is

The line that appears to be formed at the boundary between two different refractive indices and disappears if two substances has the same refractive index is called the ____________ line.

Pyrex has what additive to make it have its characteristic properties?

The microscope is used to examine glass pieces is called a

HPLC is used to separate and display some f the common components of soils.

Introduction to Forensic Science

Crime Scene Investigation

Nature of Evidence

Separating Complex Mixtures

Light and Matter

Microscopy

Detector Dogs As Forensic Tools

Digital Evidence, Computer Forensics, and Investigation

Forensic Engineering

Fingerprints and Other Impressions

Questioned Documents

Firearms and Toolmarks

Forensic Pathology

Anthropology and Odontology

Forensic Palynology Entomology

Serology

Dna Typing

Hair

Illicit Drugs

Forensic Toxicology

Fibers, Paints, and Other Polymers

Fires and Explosions

Presentation of Forensic Evidence in Court

Forensic Psychology

Filters

The "3R" rule for determining the direction of force on a broken piece of glass states that when examining a fracture, there is a angle formed on the ___side of the force.

Tempered glass is heated to 1500⁰C to achieve its consistency.