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WorksheetsForensics 1 Review
Total questions: 130
Worksheet time: 2hrs 34mins
A forensic scientist is called to a court of law to provide:
facts
opinion
judgment
reflection
Scientific tests or techniques used in connection with the detection of crime.
forensics
forensic anthropologist
crime scene
approach the scene
autopsy
The most important tool of a forensic investigator is the ability to observe, interpret and report ________ clearly.
data
observations
biases
stereotypes
________ accounts of crime scene events vary from one person to another and may or may not be accurate.
victim
perpetrator
eye witness
first responder
This was developed in 1992 and its main purpose is to reexamine post-conviction cases using DNA evidence.
Frye Standard
Daubert Ruling
Locard's Exchange Principle
Innocence Project
How does our brains make sense of the thousands of pieces of information that comes its way on a daily basis?
It doesn't
It relies on help from other organs in the body
It filters information
It doesn't have to. It can process ALL information.
True or False: Good observation skills come naturally to forensic investigators so they do not have to be trained.
true
false
True or False: most wrongful convictions are the result of faulty eyewitness testimony.
true
false
True or False: An observation is made prior to the formation of a perception.
True
False
True or False: Drawing a conclusion using deductive reasoning ensures that investigators are 100% correct in their guesses.
True
False
True or False: Jurors rank fingerprint evidence as the most influential piece of evidence that sways them to a conviction.
True
False
True or False: People’s memory can be influenced, molded, and manipulated.
True
False
Which is NOT a factor that can affect observations?
level of interest
hair color
biases
emotions
All of the following are ways to improve our observational skills except ___
Be sure to look at the entire area, not just the body, weapons, or signs of break-in.
Observe everything - big and small.
When collecting evidence, record only those things that you are sure are important.
Write down and photograph everything you find.
The forensic scientist has many duties. Which of these is NOT a job of a forensic expert?
take detailed notes
make judgments based on biases
observe the crime scene
make interpretations
The Innocence Project was Established in what year?
1998
1992
1990
1988
An eye witness' testimony can be affected by...
All of these
Who else is around.
How they felt that day.
Religious views
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
Frontal Lobe is associated to:
movement, orientation, recognition of stimuli
visual processing
Perception, memory and speech
reasoning, planning, parts of speech, emotions and problem solving
Refers to small evidence like hairs or fibers
A location other than where the crime took place, but is in some way related to the crime and where evidence is found
Primary Crime Scene
Secondary Crime Scene
Trace Evidence
A written record of all people who have had possession of an item of evidence.
Chain of Custody
Trace Evidence
Locard exchange
example of this evidence is an eye witness account of a crime, or a recording of the crime.
Direct Evidence
indirect evidence
Circumstantial evidence
indirect evidence, or evidence used to imply what happened at the crime scene
direct evidence
Circumstantial evidence
secondary evidence
material that connects an individual to a GROUP that have similar characteristics.
individual evidence
first responder
Class evidence
Where the crime took place
Secondary Crime Scene
Frist Responder
Primary Crime Scene
The first person on the scene
Medical examiner
CSI investigator
First Responder
spiral, round, line, quadrant
grid, round, line, zone
spiral, grid, line, quadrant
Detectives and forensic scientists preserve an impression of the scene by...
taking photos
making sketches
making video recordings
all of these
A clothing fiber found at a crime scene is an example of
direct evidence
circumstantial evidence
Which is NOT one of the Seven S's of crime scene investigation?
See the Scene
Sketch the Scene
Search for Evidence
Sign Off the Evidence
Small but measurable amounts of evidence are called...
Trace evidence
Physical evidence
Class evidence
Direct evidence
Class or Individual Evidence: Fingerprint
Class
Individual
Class or Individual Evidence: Car paint transfer
Class
Individual
Class or Individual Evidence: Blood Typing
Class
Individual
The principle that states that "the perpetrator of a crime will bring something to the crime scene & leave with something from it, & that both can be used as forensic evidence is known as ______________ Exchange Principle.
Bertollon's
Landsteiner's
Locard's
Orfila's
What is the Daubert Ruling?
theories based on flawed or untestable hypotheses
evidence accepted only if the principle is accepted by the sciences
A judge determines whether an expert's testimony can be used in court
eliminates "junk" science by not allowing expert witnesses
The Chain of Custody is a common practice, but not required for all types of evidence
true
false
Which type of search pattern is this?
grid
spiral
strip / line
quadrant / zone
Which type of search pattern is this?
grid
spiral
strip / line
quadrant / zone
Which type of search pattern is this?
grid
spiral
strip / line
quadrant / zone
Which type of search pattern is this?
grid
spiral
strip / line
quadrant / zone
When searching for evidence it's important to ....
collect only what can be used in court
take things that can have tests run on them
take the most important items first, then come back for the rest
take everything, evidence can be eliminated later
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
Forensic Science is
microscopes used for vapor
the applications of testing
applying principles of science to the law
the application of evidence to testing
The region of a hair located outside of the medulla containing granules of pigment. (wood part of pencil in our example)
Cuticle
Medulla
Cortex
The tough outer covering of a hair composed of overlapping scales. (outer part of pencil in our example)
Cortex
Cuticle
Medulla
The hair follicle is dormant (not growing hair anymore) and hairs are easily lost during which stage of the hair life cycle?
Anagen
Telogen
Catagen
Metagen
The picture shows a __________ hair.
human
animal
What kind of hair is this?
Human
Animal
The large middle layer of a hair shaft that contains pigment is the (the wood of the pencil)
the cuticle
the medulla
the cortex
the polymer
the victim's hair found on the suspect
the suspect's hair found on the victim
dog hair from victim found on the suspect
victim's own hair found on the victim's body
What is the protein that hair is composed of?
keratin
glycerin
catagen
biogen
The medulla pattern shown would be
absent
fragmented
continuous
interrupted
Act as a sense organ
This is the beginning phase of hair growth...
Anagen Phase
Catagen Phase
Telogen Phase
Biogen Phase
When being compared to a wooden pencil, which part of hair represents the lead?
medulla
cortex
cuticle
follicular tag
We know hair is from a human if the Medullary Index (MI) …
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 (break down)
Hair is what type of evidence without the follicle?
Class
Individual
unknown
all of the above
Is it possible to determine what body part hair evidence came from?
Yes
No
Humans lose approximately how many hair per day?
10
100
1000
Which letter in the diagram represents the cuticle?
A
B
C
D
Which letter in the diagram represents the medulla?
A
B
C
D
What does a damaged hair root tell investigators?
The hair fell out of the person's head.
The hair was forcefully removed.
individual evidence
bits of pigment found in the cortex of a hair
a kind of evidence that identifies a particular person or thing
small but measurable amounts of physical or biological material found at crime scene
the actively growing root or base of hair containing DNA and living cells
To determine the medullary index, you would ______.
measure the diameter of the medulla and divide it by the diameter of the hair
measure the diameter of the hair and add it to the diameter of the medulla
measure the length of the medulla and divide it by the length of the hair
measure the diameter of the medulla and multiply it by the diameter of the cortex
The actively growing root or base of a hair containing DNA and living cells.
Root
Hair Follicle
Keratin
Medulla
Natural fibers can be harvested from
plants and animals
only from plants
only from animals
plants, animals, and minerals
The shiny nature of silk can be related to
its hollow core
its ability to refract light
its smooth, round fibers
mucus secretions from the silkworm
What characteristics of cotton make it a great source of fiber for clothing?
It is very easy to grow.
It is resistant to staining.
The fibers are easily woven and dyed.
The fibers are extremely long.
Mineral fibers such as asbestos are very durable. These fibers are used in all of the following except
rope
shingles
floor tiles
brake liners
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
melt at a lower temperature than synthetic fibers
are affected by microscopic organisms
will not break down when exposed to bright light
Which of the following observations are used to help identify a specific fiber?
smell of the burned fiber
on contact with the flame, does the fiber coil or melt?
color and structure of the residue left after the riber burns
all of the above
Fibers are an excellent source of trace evidence because
They are easily transferred from victim to suspect.
They are often overlooked by a suspect.
They can be easily collected and stored.
All of the above.
A fiber is collected at a crime scene. When viewed under a compound microscope, what two traits would indicate that the fiber was a human hair and not a piece of fiber obtained from an article of clothing? (Choose 2)
the presence of a cuticle
a medullary index of 0.33 or less
a wide diameter
its ability to dissolve in water
What are those markings on our fingers called?
Identification patterns
Patterns of imprints
Friction Ridges
Covering markings
What are the purposes of friction ridges?
So we can identify criminals
Were needed when we were cavemen
So we can hold on to objects
To stimulate others when we touch them
Which type of fingerprint pattern is the rarest?
Whorls
Loops
Arches
Circles
Which fingerprint pattern is the most common?
Whorls
Arches
Loops
Circles
Do these cute identical twins have the same fingerprints?
True
False
What will happen if I use acid to destroy the fingerprints on my skin?
The fingerprints will grow back differently
The fingerprints will grow back the same
The skin on my fingers will be smooth
I will lose all my finger tips
Mistakes are never made identifying fingerprints.
True
False
What type of fingerprint is this?
Plain Arch
Tented Arch
Accidental Whorl
Radial Loop
What type of fingerprint is this?
Central Pocket Whorl
Plain Whorl
Accidental Whorl
Double Loop Whorl
What type of fingerprint is this?
Tented Arch
Whorl
Loop
Plain Whorl
This is what kind of pattern?
whorl
loop
arch
double arch
Which of the following types of fingerprints are more likely to be found impressed in soft wax?
invisible
latent
patent
plastic
Type of print that is INVISIBLE and must be dusted with a powder.
latent
patent
plastic
concave
A visible fingerprint that happens when fingers with blood, ink, or some other substance on them touch a surface and transfer the pattern of their fingerprint to that surface
Patent
Latent
Plastic
convex
On what type of surface is latent prints usually found?
Rough surfaces
Soft surfaces such as wax or clay
Smooth surfaces such as glass
blankets
Fingerprints can prove
guilt
innocence
both innocence and guilt
How do you permanently erase fingerprints?
You can use chemicals.
You can use sandpaper.
You can only erase them temporarily, they will grow back.
If you have skin problems, they will be erased.
What type of fingerprint is shown in the picture?
Arch
Whorl
Loop
Swoop
What is identified by the green mark?
core
loop
dot
delta
What cuticle type is in the picture?
Coronal
Imbricate
Spinous
A French criminologist, the pioneer in forensic science who became known as the "Sherlock Holmes of France". He formulated the basic principle of forensic science: "Every contact leaves a trace".
Edmond Locard
Ernesto Miranda
Gideon Wainwright
Sherlock Holmes
A crime scene sketch is a required part of an investigation.
True
False
What is the first "S" in the 7 S's of Crime Scene Investigation?
Search for Evidence
Scan the scene
Separate the Witnesses
Secure the scene
A location other than where the crime took place, but is in the same way related to the crime and where evidence is found
Primary Crime Scene
Secondary Crime Scene
Trace Evidence
What is the main purpose of fingerprinting in forensic science?
To determine a person's age
To identify individuals
To find out a person's occupation
To establish a person's health status
This person documents the crime scene and collect physical evidence
Crime Scene investigator
First responder
Specialist
CSI stands for
Criminal Scenic Investor
Crime Series Insulator
Crime Scene Instigator
Crime Scene Investigator
What type of fingerprint evidence is this?
Latent
Patent
Plastic
Potent
Lateral
What is the name of the pattern shown?
Loop
Whorl
Arch
