Deck 10: Matter, light, and Glass Examination

Question 1

The periodic table is a:

A) Forensic text table of contents.
B) Forensic newsletter issued periodically.
C) Special laboratory surface for multiphase experiments.
D) Chart listing all the known elements by name and symbol.

Answer 1

D

Question 2

One milliliter of a liquid is ________ 1cc of the same liquid.

A) The same as
B) Greater than
C) Less than
D) None of the above

Answer 2

A

Question 3

The attraction between the molecules of a gas is ________ the attraction between the molecules of a liquid.

A) The same as
B) Greater than
C) Less than
D) Unrelated to

Answer 3

C

Question 4

The basic metric unit for volume is the:

A) Centimeter.
B) Liter.
C) Milliliter.
D) Gram.

Question 5

Sublimation is defined as a change of state from:

A) Gas to liquid.
B) Liquid to solid.
C) Solid to liquid.
D) Solid to gas.

Question 6

The effect of gravity on the weight of an object is ________ the effect of gravity on the mass of the same object.

A) The same as
B) Less than
C) Greater than
D) None of the above

Question 7

The weight 264.45 grams can be correctly expressed as:

A) 26,445 decigrams.
B) 0.26445 kilograms.
C) 26.445 centigrams.
D) None of the above

Question 8

Which is NOT an intensive property of matter?

A) Density
B) Refractive index
C) Weight
D) Temperature

Question 9

Which of the following is an element?

A) Wood
B) Water
C) Aluminum
D) Air

Question 10

The use of the Celsius temperature scale by scientists is ________ their use of the Fahrenheit temperature scale.

A) Greater than
B) The same as
C) Less than
D) None of the above

Question 11

The freezing point of water in Fahrenheit is ________ the freezing point of water.

A) Less than
B) The same as
C) Greater than
D) None of the above

Question 12

If an object is immersed in a liquid of greater density,it will:

A) Be suspended in the liquid
B) Float
C) Sink
D) Be suspended for a known period of time before sinking

Question 13

Eight inches is approximately ________ centimeters.

A) 17
B) 10
C) 8
D) 20

Question 14

The physical state that has both shape and volume is a:

A) Solid.
B) Liquid.
C) Gas.
D) Vapor.

Question 15

The heat intensity (hotness)of water at 100°C is ________ the heat intensity of water at 212°F.

A) Greater than
B) The same as
C) Less than
D) None of the above

Question 16

The density of liquids is ________ the density of gases.

A) Less than
B) The same as
C) Greater than
D) None of the above

Question 17

The density of water at 60°F is ________ the density of water at 28°F.

A) Less than
B) Greater than
C) The same as
D) None of the above

Question 18

Which physical state has volume but no specific shape?

A) Gas
B) Liquid
C) Solid
D) No such state exists

Question 19

The refractive index of a substance varies with:

A) Its temperature.
B) The wavelength of the light passing through it.
C) The color of the light passing through it.
D) All of the above

Question 20

Which of the following is false?

A) The basic building blocks of all substances are elements.
B) Elements are composed of atoms.
C) Two or more elements combine to form compounds.
D) At present, 96 compounds have been identified.

Question 21

Stress marks on the edge of a radial crack near the point of impact are:

A) Perpendicular to the side on which the force was applied.
B) Parallel to the side on which the force was applied.
C) Parallel to the side opposite the side on which the force was applied.
D) Perpendicular to the side of the glass facing outdoors.

Question 22

The refractive index of a medium is determined by the ratio of:

A) Velocity of light in a vacuum to velocity of light in a medium.
B) Density of light in the medium to density of light in a vacuum.
C) Frequency of light in a vacuum to frequency of light in a medium.
D) Velocity of light in a vacuum to frequency of light in a medium.

Question 23

If glass cannot be physically pieced together then the control and question glass are best compared as to their:

A) Color and density.
B) Weight and density.
C) Refractive index and density.
D) Refractive index and weight.

Question 24

The two most important physical properties of glass for forensic comparisons are:

A) Color and density
B) Weight and density
C) Refractive index and density
D) Refractive index and weight

Question 25

Pyrex glass:

A) Is put through an annealing process.
B) Has been tempered.
C) Is made with the addition of boron oxide.
D) Is laminated.

Question 26

A(n)________ property describes the behavior of a substance without reference to any other substance while a(n)________ property describes the behavior of a substance when it reacts or combines with another substance.

A) Optical; birefringent
B) Physical; biological
C) Chemical; biological
D) Physical; chemical

Question 27

A piece of glass is immersed in a liquid.It proceeds to float on the liquid's surface.This shows that the density of the glass is ________ the density of the liquid.

A) More than
B) Less than
C) Equal to
D) Not comparable

Question 28

What is the main ingredient in ordinary glass?

A) Lime (CaO)
B) Soda (NaCO)
C) Sand
D) Metal oxides

Question 29

Tempered glass is used in:

A) Windshields in autos manufactured in the United States.
B) Crystal stemware.
C) The side and rear windows of autos manufactured in the United States.
D) Both B and C

Question 30

To explain the events that occur after radiation is absorbed by a substance,light must be characterized as:

A) A wave of constant frequency.
B) A wave of variable frequency.
C) A wave consisting of non-discrete particles.
D) A stream of discrete particles.

Question 31

The process of a glass prism separating sunlight into component colors is called:

A) Refraction
B) Birefringence
C) Sublimation
D) Dispersion

Question 32

When a bullet penetrates a panel of glass,it leaves a crater-shaped hole that:

A) Is wider on the exit side.
B) Is wider on the entrance side.
C) Forms randomly and hence the direction of impact cannot be determined by its appearance.
D) A or C

Question 33

________ is the visual effect caused by an object's absorption of certain portions of the visible light spectrum and transmission or reflection of others.

A) Dispersion
B) Color
C) Density
D) Refractive Index

Question 34

The fracture pattern of glass usually has:

A) Radial lines.
B) Concentric lines.
C) Radial and concentric lines.
D) Directional lines.

Question 35

Flotation is a method used by scientists to determine the ________ of a particle of glass.

A) Density
B) Refractive index
C) Mass
D) Weight

Question 36

A hot-stage microscope or the GRIM 3 is used to determine the ________ of glass fragments.

A) Refractive index
B) Relative density
C) Metallic oxide content
D) Temperature

Question 37

Crystalline solids,with the exception of ________ crystals,exhibit ________,or the property of refracting a beam of light into two different ray components.

A) Amorphous, refraction
B) Calcite, refractive index
C) Glass, optical properties
D) Cubic, double refraction

Question 38

The change in refractive index for tempered glass upon annealing is ________ when compared to non-tempered glass.

A) Greater
B) The same as
C) Less than
D) None of the above

Question 39

Which is a true statement about the fracturing of glass?

A) Radial cracks appear first, starting on the side opposite the destructive force.
B) Radial cracks form afterward, starting on the same side as the destructive force.
C) Concentric fractures form first, starting on the side opposite the destructive force.
D) Concentric fractures form first, on the same side as the destructive force.

Question 40

The smallest particle of an element that can exist and still retain its identity as that element is the:

A) Compound.
B) Element.
C) Photon.
D) Atom.

Question 41

A physical property is the behavior of a substance when it reacts or combines with another substance.

Question 42

The boiling point of a substance is a physical property.

Question 43

Most glass fragments can by physically reassembled or fitted together by the criminalist.

Question 44

The weight of an object can vary from one location to another while mass remains the same regardless of location.

Question 45

In reference to the diagram above,what is the correct sequence of impacts?

A) A first
B) B first
C) A and B simultaneously
D) Sequence impossible to determine

Question 46

The basic metric unit of volume is the ounce.

Question 47

Examples of intensive properties include density and refractive index.

Question 48

Which color of the visible spectrum has the highest frequency and the shortest wavelength?

A) Red
B) Green
C) Violet
D) Yellow

Question 49

The larger opening of crater-shaped hole in glass made by the penetration of a projectile indicates the entrance side of the glass.

Question 50

Water boils at 100 degrees Celsius.

Question 51

Weight is a constant property of matter that reflects the amount of material present.

Question 52

The atoms in a crystalline solid have a regular arrangement while the atoms in an amorphous solid have no regular order.

Question 53

The two most important physical properties of glass for forensic comparisons are refractive index and density.

Question 54

The Fahrenheit scale uses a melting point of 32 degrees and a boiling point of 212 degrees.

Question 55

Which of the following has higher frequencies and higher energy values in the electromagnetic spectrum?

A) Visible light
B) Radio waves
C) Ultraviolet radiation
D) X-rays

Question 56

The photons of which source have the LEAST amount of energy?

A) Microwaves
B) Gamma rays
C) Infrared rays
D) Radio waves

Question 57

Refractive index measures the speed of light in a vacuum to its speed in air.

Question 58

The general chemical composition of various window glasses has so far been found to be relatively uniform among various manufacturers and therefore offers no basis for identifying individual samples.

Question 59

Each color component of light refracts at a different angle as it emerges from a prism.

Question 60

The English system is used in the United States.

Question 61

A fracture always terminates at an existing line of fracture.

Question 62

The only way to individualize glass fragments at a crime scene to a single source is to assemble the fragments and physically fit them together like a jigsaw puzzle.

Question 63

X-rays have higher frequencies and higher energy values in the electromagnetic spectrum.

Question 64

A piece of glass that is floating on the liquid's surface shows that the density of the glass is ________ than the density of the liquid.

Question 65

One inch is equivalent to ________ centimeters.

Question 66

An atom is a pure substance composed of two or more elements.

Question 67

Different phases are distinguished from one another by definite visible boundaries.

Question 68

The more material one has,the less radiation it will absorb.

Question 69

Sublimation causes the attractive forces between molecules to decrease in strength.

Question 70

It is frequently possible to determine the sequence of impacts in glass by observing the existing fracture lines and their points of termination.

Question 71

Stress marks on the edge of a radial crack near the point of impact are ________ to the side on which the force was applied.

Question 72

If glass cannot be physically pieced together,then the control and question glass are best compared as to their refractive index and ________.

Question 73

The fracture pattern of glass usually has radial and ________ lines.

Question 74

The 3R rules states that Radial cracks form a Right angle on the Reverse side of the force.

Question 75

Glass fragments removed from a single sheet of plate glass have a uniform density or refractive index value.

Question 76

When a substance undergoes a change of state from liquid to gas,the attractive forces between the molecules increase in strength.

Question 77

Tempered glass is used in the windshields of U.S.-built cars.

Question 78

A gas has neither a specific shape nor a specific volume.

Question 79

When tempered glass breaks,it does not shatter.

Question 80

________ is defined as weight per unit volume.