WorksheetsForensics Semester 1
Total questions: 85
Worksheet time: 1hrs 29mins
The origin of the word Forensics, forensis, means "in open court/public" or "of the forum."
True
False
An opinion is a statement or information that can be verified.
True
False
Through our senses of sight, taste, hearing, smell, and touch, we gather information about what is around us.
True
False
All are true of perception EXCEPT...
it can be faulty
it is the interpreting of information received from the senses
it can be affected by previous experiences
it is always accurate
A person who has seen someone or something related to a crime and can communicate these facts is:
a suspect
a court reporter
an eyewitness
a personal observer
Deriving a conclusion from the facts using a series of logical steps is:
observation
logical
deductive reasoning
perception
When gathering eyewitness testimony, the investigator should...
keep in mind that memories can be faulty due to factors such as distractions
wait at least a week to allow stress levels and emotions to return to normal
ask leading questions
question all of the witnesses together
Stress can enhance the brain's ability to construct accurate memories.
True
False
The following is an example of qualitative data:
5'6"
brown hair
150 lbs.
3 dogs
The following is an example of quantitative data:
blue eyes
tall
100 grams
round
Forensic Science is the application of scientific knowledge to legal matters.
True
False
Forensic investigators are responsible for all of these except:
confirming a suspect's guilt
systematic observation and documentation
report and communicate observations
collect and examine evidence
The majority of Innocence Project cases involve individuals who were falsely convicted due to...
contaminated DNA.
too much physical evidence.
police corruption.
faulty eyewitness testimony.
material that connects an individual or thing to a group that share similar characteristics
trace evidence
individual evidence
class evidence
material that can be related to a single source
individual evidence
control evidence
trace evidence
The ability to establish the exact whereabouts of an item of evidence and under whose control it was from its collection at the crime scene to its presentation in the courtroom and everywhere in between is called
chain of command
record of evidence
chain of custody
Blood-stained materials should be store in what type of container
paper bags
air-tight new paint can
mason jar with a lid
plastic bag with a seal
"With contact between two items, there will be an exchange." This is known as _____
physical evdience
Locard's exchange principle
Forensic exchange principle
the law of forensics
It is important to separate witnesses at a crime scene in order to
prevent contamination of evidence
prevent them from talking and forming a collusion
prevent them from leaving the scene
The first officer arriving at a crime scene, after providing or obtaining medical assistance for the injured and effecting an arrest of suspects (if possible), should immediately:
photograph the scene.
search for evidence.
make a rough sketch of the scene.
secure the scene.
small but measurable amounts of physical or biological material found at a crime scene
individual evidence
class evidence
direct evidence
trace evidence
A crime scene sketch is a required part of an investigation.
True
False
All evidence must be collected in glass test tubes.
True
False
All evidence gathered at a crime scene must be
labeled and documented
analyzed in a scientific manner
handled carefully so not to contaminate the specimen
all of the above
Processing a crime scene involves:
only collecting evidence and taking pictures
Collecting evidence, sketching the scene, taking pictures, interviewing suspects, and examining the scene
only examining the scene and interviewing witnesses
only sketching the scene and taking pictures
When evidence can only be associated with a group and never with a single source, that evidence is said to possess:
Class categories
Class characteristics
Group categories
Group characteristics
Which scale pattern identifies human hair?
Imbricate
Coronal
Spinous
None of these
The most important structure for the individualization of hair (identity).
Medulla
Cuticle
Cortex
Follicle
Using the pencil analogy, which structure corresponds to the paint on the surface?
Follicle
Cortex
Cuticle
Medulla
Using the pencil analogy, which structure corresponds to the wood?
Follicle
Cortex
Cuticle
Medulla
Using the pencil analogy, which structure corresponds to the lead?
Follicle
Cortex
Cuticle
Medulla
Which scale pattern is indicated?
Coronal
Spinous
Imbricate
None of these
Which gland secretes oil and causes hair to be oily?
Sebaceous
Adrenal
Pineal
Eccrine
Hair analysis may be used to determine all of the following except:
manner in which the hair was removed
body region from which the hair came from
broad racial background of the individual from which the hair came from
identity of the individual from which the hair came from
We know hair is from a human if…
The medullary index is 0.5 or greater
The medullary index is 0.33 or less
The cuticle is coronal
The medulla is fragmented
Hair is helpful in solving old crimes because…
hair on a suspect never changes
hair always contains DNA evidence
hair takes little room to store in evidence closets
hair does not easily decompose
The hair shaft is composed of what important protein?
Cellulose
Chitin
Peptidoglycan
Keratin
The following medulla pattern is called
fragmented
continuous
interrupted
The oldest part of the hair is the:
Middle
Tip
Root
Shaft
What kind of medulla is this?
Fragmented
Continuous
Interrupted/Intermittent
There is no medulla - Absent
Which of the following is NOT a layer of the hair shaft?
Cuticle
Cortex
Medulla
Follicle
The cuticle of the hair is made up of scales that point
perpendicular to the scalp
towards the medulla
towards the root
away from the root
A microscopic examination can reveal whether a hair is from a man or a woman.
true
false
A microscopic examination can reveal whether a hair is from a scalp or a beard.
true
false
Forcibly removed hairs are most likely to provide useful DNA evidence.
true
false
What characteristic of cotton make it a great source of fiber for clothing?
It is a polymer of keratin
Stain resistant
Fibers are easily woven and dyed
Fibers are extremely long
What is this weave pattern?
Satin
Basket
Leno
Plain
The smallest unit of textile material that has a length many times greater than its diameter is a(n)
Fiber
Cuticle
Strand
Tress
The most prevalent plant fiber is:
Hemp
Cotton
Mohair
Wool
In the examination of fibers, the first and most important step in the examination will be:
Determining whether the fiber is natural or manufactured
Microscopically comparing for color and diameter using a comparison microscope
Synthesizing long-chained molecules into a polymer
None of the above
Fibers are an excellent source of trace evidence because
they are easily transferred from a victim to a suspect
they are often overlooked by a suspect
they can be easily collected and stored
all of these choices
Natural fibers can be harvested from
plants and animals
only from plants
only from animals
None of these
All of the following are characteristics of a synthetic fiber except
they are formed by combining monomer compounds into polymer molecules
they are man-made
they are used in the production of carpet fibers
they do not contain any natural fibers
A characteristic of natural fibers is that they
are stronger than synthetic fibers
will not break down when exposed to bright light
melt at a lower temperature that synthetic fibers
are affected by microscopic organisms
Which of the following observations are used to help identify a specific fiber?
smell of the burned fiber
on contact with flame, does the fiber coil or melt?
color and structure of the residue left after the fiber burns
all of these choices
What main fingerprint pattern is this? (Left Hand)
Loop
Arch
Whorl
Latent
What main fingerprint pattern is this? (Right Hand)
Arch
Plastic
Loop
Whorl
What main type of fingerprint pattern is this?
Loop
Whorl
Arch
Bifurcation
What is the name of this minutiae?
Bifurcation
Splitting Ridge
Delta
Y
What is the evolutionary purpose of the ridges that create our fingerprints?
to identity individuals
there is no purpose
to grasp objects
to protect your fingers
When are fingerprints formed?
When you are a teenager
During fetal development/in the womb
By the time you are two years old
At birth
A fingerprint pattern will remain unchanged for the life of an individual; however, the print itself may change due to scars and disease.
True
False
Identify the WHORL fingerprint pattern.
Identify the loop fingerprint pattern.
Identify the arch fingerprint pattern.
Prints that are not readily visible are called _____ prints.
latent
visbile
plastic
IAFIS is the...
FBI fingerprint database.
CIA DNA database.
International union of forensic scientists.
national child database.
Twins have the same fingerprints.
True
False
The lines on your fingers that make a pattern are called...
cores.
deltas.
ridges.
arches.
ATG TGA CAG
Bases are joined by which type of bond?
