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WorksheetsForensics Worksheet: Crime Scene & Evidence Analysis
Total questions: 83
Worksheet time: 42mins
Locard’s Exchange Principle states: “Every ______ leaves a ______.”
contact; trace
person; mark
object; stain
action; sign
An example of Locard’s Principle in action is:
A suspect leaves fingerprints at a crime scene.
A witness gives a statement to the police.
A detective interviews a suspect.
A judge delivers a verdict in court.
What is the documented and unbroken record of evidence transfer called?
Chain of custody
Evidence log
Transfer sheet
Custody report
Which step in crime scene processing involves photographing the scene?
Documentation
Collection
Preservation
Analysis
What does the Innocence Project aim to do?
Exonerate wrongfully convicted individuals
Support all criminal convictions
Prosecute innocent people
Provide legal aid to guilty individuals
Which principle states that fibers can transfer during contact?
Locard’s Exchange Principle
Mendel’s Law of Inheritance
Newton’s Third Law
Darwin’s Theory of Evolution
A crime scene sketch should include all EXCEPT: _______________
Personal opinions
Measurements
Legend
Scale
Which step follows immediately after securing a crime scene?
Documentation
Evidence Collection
Suspect Interrogation
Witness Interview
Which C.S.I. team member declares cause of death?
Medical examiner
Detective
Forensic photographer
Crime scene investigator
Correct evidence collection requires: _______________
Proper packaging and labeling
Immediate destruction of evidence
Leaving evidence at the scene
Ignoring chain of custody
Which principle states “Every contact leaves a trace”?
Locard’s Exchange Principle
Mendel’s Law
Newton’s First Law
Darwin’s Theory
What is the purpose of Chain of Custody?
To maintain the integrity of evidence
To increase the value of evidence
To speed up the investigation process
To allow multiple people to handle evidence freely
According to the Daubert Ruling, expert witnesses must be approved as __________ by a __________.
experts; judge
witnesses; jury
specialists; attorney
consultants; prosecutor
What is circumstantial evidence?
Evidence that implies a fact but does not directly prove it
Evidence that directly proves a fact
Evidence obtained from eyewitnesses
Evidence that is always inadmissible in court
Give two examples of direct evidence.
Eyewitness testimony and video recordings
Hearsay and rumors
Speculation and assumptions
Circumstantial evidence and inference
Which organization focuses on exonerating innocent individuals through DNA testing?
The Innocence Project
Amnesty International
Human Rights Watch
The Red Cross
The Innocence Project found most wrongful convictions were due to _______________
Eyewitness misidentification
Improper jury instructions
Lack of legal representation
False confessions
Which famous leader’s hair contained arsenic?
Napoleon Bonaparte
Julius Caesar
George Washington
Mahatma Gandhi
What is the Frye Standard used for?
To determine the admissibility of scientific evidence in court
To establish the credibility of witnesses
To set sentencing guidelines for judges
To regulate attorney conduct in trials
What does AFIS stand for? _______________
Automated Fingerprint Identification System
Advanced Facial Identification Software
Automated Forensic Investigation Service
American Federal Investigation Squad
The part of the hair required for nuclear DNA analysis is the __________.
root
shaft
cuticle
tip
The hair shaft is composed of the cuticle, cortex, and __________.
medulla
epidermis
follicle
sebaceous gland
The cortex of hair contains __________ granules.
pigment
keratin
melanin
protein
Human hair has a ______ medullary index than animal hair.
lower
higher
equal
thicker
Which fiber is synthetic?
cotton
wool
rayon
hemp
Which fiber is an animal fiber?
wool
cotton
nylon
polyester
Which fiber is NOT natural?
rayon
cotton
wool
silk
What is the smallest unit of a textile?
fiber
yarn
fabric
thread
Name one test used to determine fiber type: ____________________
burn test
color matching test
stretch test
weight test
What is the horizontal thread count in woven fabric called?
weft
warp
selvage
pile
Fibers can be biological or ______ evidence.
physical
chemical
digital
visual
32. Hair can show evidence of ______ use.
drug
water
paint
food
The cuticle is the ______ layer of hair.
outermost
innermost
middle
thickest
34. Hair can indicate race or age but not identity without a ______.
root
strand
color
length
The medullary index compares the width of ______ to ______.
medulla; cortex
cortex; medulla
hair; follicle
root; shaft
36. Fingerprints are formed during ______.
fetal development
adulthood
childhood
old age
The lines or ridges in fingerprints are called ______.
minutiae
follicles
papillae
striae
38. Which fingerprint pattern is most common?
loop
whorl
arch
tented arch
39. Which fingerprint pattern is least common?
arch
loop
whorl
tented arch
What method uses glue fumes to develop latent prints?
cyanoacrylate (super glue) fuming
ninhydrin spraying
iodine fuming
silver nitrate application
41. Plastic prints are impressions left in ______ material.
soft
hard
liquid
rough
Latent prints are ______ without enhancement?
invisible
visible
colored
permanent
43. Fingerprints result from ______ and ______ on skin ridges.
sweat; oil
blood; plasma
water; salt
dust; dirt
44. Fingerprints are considered ______ evidence.
individual
class
circumstantial
testimonial
45. Loops are the ______ fingerprint type.
most common
least common
rarest
unusual
Name two other fingerprint patterns besides loops.
whorls and arches
dots and stripes
waves and circles
lines and squares
47. Why is fingerprint identification not perfect? ________________________________
Because fingerprints can sometimes be similar among different individuals.
Because fingerprints are always unique and never change.
Because fingerprint scanners never make mistakes.
Because fingerprints are always perfectly clear and readable.
48. AFIS stores:
fingerprint data
voice recordings
retina scans
DNA profiles
49. A delta in fingerprint analysis is:
a triangular area where ridge patterns diverge
a loop pattern in the fingerprint
the central whorl of the fingerprint
a scar on the fingerprint
A core in fingerprint analysis refers to:
the central part of a fingerprint pattern
the outer edge of a fingerprint
the ridge ending in a fingerprint
the whorl pattern in a fingerprint
51. Direct evidence ______ a fact, while circumstantial evidence ______ a fact.
proves; suggests
suggests; proves
denies; proves
proves; denies
Give two examples of circumstantial evidence.
Fingerprints and footprints found at a crime scene.
Direct eyewitness testimony and confessions.
Official documents and written contracts.
Personal opinions and rumors.
Which type of evidence is biological?
fingerprint
hair
shell casing
tool mark
54. Which type of evidence proves a fact directly?
Direct evidence
Circumstantial evidence
Hearsay evidence
Documentary evidence
Trace evidence is:
small pieces of evidence such as hair, fibers, or glass found at a crime scene
large objects found at a crime scene
written documents used in investigations
fingerprints left on surfaces
56. An example of class evidence is:
A blood type found at a crime scene
A fingerprint with unique ridge patterns
A handwritten note with a signature
A DNA profile matching a suspect
57. An example of individual evidence is:
A fingerprint
A blood type
A shoe size
A hair color
Fiber evidence is rarely conclusive because:
it cannot usually be traced to a single source
it is always contaminated
it is always synthetic
it is never found at crime scenes
The difference between class and individual evidence is:
Class evidence links an object to a group, while individual evidence links it to a single source.
Class evidence is always more reliable than individual evidence.
Individual evidence cannot be used in court, but class evidence can.
Class evidence is unique to one person, while individual evidence is common to many.
The role of forensic scientists in court is to:
present scientific evidence objectively
defend the accused
act as the judge
represent the prosecution
The shaft of the hair is considered class evidence.
True
False
Hair is composed of the protein keratin.
True
False
All hairs on a person's head are identical.
True
False
The cortex contains pigment.
True
False
Locard's Principle involves the exchange of materials between two objects.
True
False
Eyewitness accounts are always accurate.
True
False
Chain of Custody ensures evidence integrity.
True
False
Circumstantial evidence cannot be used in court.
True
False
Forensic scientists analyze evidence and testify in court.
True
False
Direct evidence proves a fact.
True
False
Synthetic fibers are made by humans.
True
False
Fibers can be biological or physical evidence.
True
False
Rayon is considered synthetic.
True
False
Wool is a plant fiber.
True
False
Fibers are easily matched to individuals.
True
False
Fingerprints result from oils and secretions on skin ridges.
True
False
Loops are the most common fingerprint type.
True
False
Fingerprints are considered class evidence.
True
False
Plastic prints are 3D impressions.
True
False
Cyanoacrylate fuming is a method for developing latent fingerprints.
True
False
Which layer of hair contains pigment granules?
cuticle
cortex
shaft
medulla
What type of evidence is a fiber found at a crime scene?
direct evidence
testimonial evidence
individual evidence
class evidence
Which fingerprint development method uses purple stains?
ninhydrin
iodine fuming
silver nitrate
super glue fuming
