Two similar but separate optical microscopes for observation by both eyes simultaneously for low to medium magnification in the range of 4 to 40x describes which of the following?
Scanning electron microscope
Polarizing light microscope
Comparison microscope
Stereo binocular microscope
Which of the following microscopes permits viewing of samples at much greater magnification and resolution that is possible by light microscopes. Magnification is possible in the range of 10 to 100,000.
Compound binocular microscope
Regarding broken glass, these are fractures that appear to circle around the point of impact.
Concentric cracks
Circular cracks
Radial cracks
Circulatory cracks
Hairs cannot be distinguished as to racial origin.
True
False
The layer of scales covering the shaft of the hair is known as which of the following?
Medulla
Cuticle
Distal
Cortex
The center portion of the hair is known as which of the following?
Which of the following types of hair can be analyzed side by side under a microscope?
Limb hair
Facial hair
Axillary hair
Pubic hair
The make, model, year, and color of a vehicle can possibly be determined by the finding of a paint chip at the scene of a hit and run
Which of the following is NOT a base element contained in gunshot residue?
Nitrogen
Barium
Antimony
Lead
Only important photographs depicting evidence should be included in a photograph log.
What is the correct order for photographing a crime scene?
Overall, close-up, midrange
Close-up, midrange, overall
Midrange, overall, close-up
Overall, midrange, close-up
The device that allows light to pass through to the imaging system for a specified period of time.
Aperture
Focus ring
Shutter
BIOS
ISO numbers indicate the level of _____________________ of the camera to light.
Placement
Direction
Sensitivity
Speed
What is the most important factor in digital imaging?
Light
Time
Distance
Depth of field can be increased by making the aperture number smaller.
Objects of interest and evidence should be shot at ____________ degrees.
45
60
75
90
Which of the following is not one of the options available on most digital single lens reflex cameras?
White balance
Gray scale
ISO sensitivity
Image quality
Regarding the aperture of the camera, the smaller the number, the smaller the opening in the lens.
The main advantage of using digital cameras at crime scenes is that a photograph may be deleted if not useable for the case.
The device that uses a high voltage to transfer a dry origin dust or residue impression to a black film is known as a(n):
Gel lifter
Alternate lifter
Electrostatic lifter
Electromagnetic lifter
The approximate amount of dental stone to be used to cast one standard size shoe impression is:
One pound
Two pounds
Three pounds
Five pounds
Three dimensional impressions should be cast with _____________________.
Venetian blue
Cement
Glue
Dental stone
Lighting that is cast across an object at an angle almost parallel to that object is known as ________________ lighting.
Oblique
Direct
Softened
Diametric
When a vehicle is turning, the rear tires will track to the inside of the front tires.
Flase
Protein staining dyes such as amido black and Coomassie Blue R250 are used mainly to enhance prints in ___________________ .
Dyes
Salts
Water
Blood
The minimum time it takes a dental stone cast to harden enough to lift is:
5 minutes
20 minutes
One hour
Two hours
The raised rubber design on a tire are called:
Octagonal design
Design elements
Pattern
Wear bars
The relative dimensions between two or more tires of the same vehicle is/are known as ___________________________.
Tire tracks
Tire impressions
Tire width
Tire length
Impressions made on non-giving surfaces such as tile, linoleum, wood flooring and also including paper, plastics, doors, carpeting, broken glass, etc. are known as:
Two dimensional impressions
Three dimensional impressions
Quad dimensional impressions
Lighted only impressions
Adobe Photoshop can be used to enhance shoe and tire impressions.
When taking examination quality photographs of shoe impressions the camera should be handheld directly above the impression.
A print that requires additional processing to be rendered visible and suitable for comparison is known as a(n) ____________________ print.
Latent
Patent
Plastic
Accidental
Which of the following statements is true regarding examination quality photographs?
Photos must be taken from 45 degrees over the impression.
Camera format must be 50mm or larger and capable of automatic focus
A scale must be placed in each photograph with the scale being the same depth as the impression.
Direct lighting should be used from at least three sides.
Which of the following is a method of developing and/or lifting two dimensional shoe impressions?
Electrostatic dust lifter
Plaster of Paris
Gait characteristics can be used to positively identify a suspect.
Which agency maintains the footwear database?
RCMP
ATF
FBI
DEA
The tread wear indicator must appear at least _________ times on a tire.
Two
Four
Six
Eight
The following is a photograph of which type of microscope?
Polarzing light microscope
Who submitted an affidavit of his examination of bloodstain evidence and findings in the case of State of Ohio v. Samuel Sheppard in 1955, which became a significant milestone in the recognition of bloodstain evidence by the American legal system?
Dr. Eduard Piotrowski
Herbert Leon MacDonell
Dr. Paul Kirk
Dr. Victor Balthazard
Defined as the force that pulls the surface molecules of a liquid toward its interior, decreasing the surface area and causing the liquid to resist penetration?
Viscosity
Surface Tension
Molecular Forces
Molecular Tension
In the drawing below, which of the bullet holes in the glass was fired first?
Left
Right
What are areas or patterns that result from the absence of bloodstains in otherwise continuous patters of staining?
Expirated patterns
Transfer patterns
Cast off patterns
Void patterns
Luminol is best used in what kind of environment?
Darkened
Extremely bright
Over exposed
Does not matter
What is the range of the total volume of blood in healthy individuals?
1.0 - 3.0 liters
4.0 - 5.5 liters
4.5 - 6.0 liters
8.0 - 9.0 liters
What is determined by examining the edge characteristics of individual stains?
Terminal velocity
Area of convergence
Direction of flight
Area of origin
What degree of impact is associated with blood that has a circular shape?
30 degrees
50 degrees
80 degrees
90 degrees
The misting effect is a pattern associated mostly with what action?
Gunshot
Beatings
Stabbings
Blood dripping
What bloodstain patterns have a linear directionality associated with them?
Cast off
Satellite
Drip
Splashed
What bloodstaining includes transfer, flow patterns, saturation stains, and stains from dripping blood?
Active
Passive
The nuclei of the red blood cells are the sources of DNA in the blood.
What type of target surface a drop of blood strikes will create little if any spatter?
Smooth tile
Asphalt
Wood
Concrete
Who was the coroner replaced by in1977in Massachusetts?
Pathologist
Medical Examiner
Pathologist assistant
Judge
How do coroners obtain their positions?
Appointed by judge
Appointed by board of educators
Elected
None of the above
Who is the physician that specializes in pathology and the diagnosis of disease and sub specializes in the area between law and medicine?
Coroner
What is defined as the disease or injury that initiated the lethal chain of events that led to death?
Mechanism of death
Manner of death
Cause of death
All of the above
The acronym NASH is a breakdown of the four what?
What change(s) are used to estimate time of death?
Rigor mortis
Livor mortis
Algor mortis
What technique is customary in the United States for autopsy examination?
Transverse incision
Neck incision
Inframammary incision
X-shaped incision
What specimens are usually collected to determine the presence of common drugs of abuse?
Blood and urine
Blood and bile
Bile and urine
Spinal fluid and bile
What trauma occurs when applied physical force exceeds the tensile strength of the tissue to which the force is applied?
Mechanical
Thermal
Chemical
Electrical
What type of object produces lacerations rather than incised wounds?
Blunt object
Sharp object
Electrical object
What color do carboxymyoglibin and carboxyhemoglobin appear as?
Bright red
Dull green
Bright pink
Bright blue
What term is used to describe the pattern of unburned powder that penetrates the skin?
Stippling
Close contact pattern
Distant wound pattern
Powder pattern
What causes entrance wounds to be round and/or elliptical?
Bullet trajectory
Rotation from rifling
Proximity
Bullet wipe
What drug is most commonly seen in forensic practice but rarely kills directly and is a contributory factor in approximately 50% of traumatic death?
Ethanol
Marijuana
Cocaine
What is the mechanism of death generally associated with thermal burns?
Multiple organ failure
Hemorrhaging
Contusions
Infectious spreading
What combination of current and voltage produces ventricular fibrillation?
Alternating current (AC) and high voltage
Alternating current (AC) and low voltage
Resistor–capacitor (RC) and high voltage
Resistor–capacitor (RC) and low voltage
The size of a sharp object can be precisely determined from examination of the characteristics of the wound.
Where was the pivotal article on examining skeletal remains written by W.M. Krogman in 1939 published?
Journal of Forensic Science
FBI Bulletin
Journal of Forensic Anthropology
Anthropological News
Approximately how many bones does the adult human skeleton have?
408
307
206
105
What animal’s paws are notoriously similar to human hands and feet?
Bear
Lion
Dog
Sloth
Insects colonize humans differently than they colonize dead animals.
Which of the following generally develops earlier?
Males
Females
Both develop at the same rate
Depends on fetal development
How many teeth do most human adults have?
23
32
42
When does tooth development begin?
Fetal life
Newborn
Infant
Toddler
Prior to what do most anthropologists not attempt to assign sex?
Adolescence
Puberty
Menopause
What skeletal feature do many methods use for forensic ancestry attribution?
Femur
Pubic symphysis
Skull
Teeth
Scientific certainty is generally restricted to what percent levels?
10%
50%
70%
90% or higher
When recovering remains the scene is destroyed as the evidence and remains are removed.
What is one of the most important factors that impact insect development?
Egg location
Temperature
Body position
What term is defined as the study of insects?
Entomology
Biology
Agrology
Insectology
After how many hours are most of the biological changes, typically used to estimate time of death, completed?
12-24 hours
24-48 hours
48-72 hours
72-102 hours
What insect’s predictable development is used in estimating elapsed time since death?
Gryllustexensis
Catocala relicta
Larval diptera
What are the first insects usually attracted to remains?
Flies
Maggots
Beetles
Cockroach
How is a fly quickly attracted to a dead body?
Sight
Odors
Both A and B
Flies aren't attracted to a carcass, maggots are
What location on the body do flies prefer to lay their eggs to increase the chance of success of the offspring?
Wound
Clavicle
Neck
Blowflies are nocturnal
The infestation of living human or other vertebrate animals with dipteran larvae is termed what?
Mitosis
Myosis
Myiasis
Mitiasis
What is considered court approved information that is used to determine a defendant’s guilt or innocence?
Expert Testimony
Eye-Witness Testimony
Evidence
Rules of Evidence
Admissibility or inadmissibility of trial information is determined by the application of what?
What must admissible evidence be?
Reliable and relevant
Testimonial evidence
Expert approved
Jury approved
What jurisdiction(s) do the Federal Rules of Evidence apply to?
All
Federal
State
Local
What name did the Daubert decision refer to the judge as?
Gatekeeper
Trier of the fact
Plaintiff
King/Queen
What kind of evidence is forensic evidence considered?
Circumstantial
Both
What type of evidence comes into court and does not reference a particular suspect?
Class characteristic
Individual characteristic
Inculpatory
Exculpatory
The federal rules of evidence are inclusionary in nature, meaning they serve to include all information presented by either side.
The forensic part of forensic evidence refers to the scientific process through which facts are generated and the evidence part refers to a distinct set of procedures that are unique to the litigation process.
The criminalist’s responsible to report conclusions in a timely and consistent manner and determine guilt.
What were the scientists responsible for the early discoveries in forensic science considered due to the fact that they worked in many forensic disciplines?
Specialists
Generalists
Chemists
Examiners
Who is responsible for developing probability models ,showing that fingerprints were unique?
Alphonse Bertillon
Calvin Goddard
Victor Balthazard
Edmund Locard
Who is credited with developing the first classification system for fingerprints?
Charles Darwin
Sir Francis Galton
Mathieu Orfila
Who is credited with establishing scientific examination of firearms in the United States?
What was Edmund Locard’s main interest in forensic science?
Chemistry
Trace Evidence
Toxicology
What term describes when a laboratory has agreed to operate according to a professional or industry standard and has proven that it can and does operate this way?
Accreditation
Certification
Attestation
Quality Assurance
How is an expert’s qualification to testify established?
Direct Examination
Cross Examination
Voir Dire
Re-cross Examination
Anthropometry remained widely used into the early 1900’s when fingerprints began to replace it.
The difference of opinion between two experts indicates that one of the experts is unethical.
Linkage of persons, scenes or objects is based on what?
Edmond Locard’s exchange principle
Hans Gross’ principle on the value of physical evidence
Sir Francis Galton’s classification system
Alphonse Bertillon’s measurement system
Duties of the First Responder consist of which of the following?
Detain any witnesses
Protect the crime scene
Document any changes or alterations to the crime scene
There are two basic types of sketches as part of crime scene investigation: Rough and what other?
Final
Initial
Perfect
What is the process of determining or eliminating the events that could have occurred at the crime scene by the analysis of the crime scene appearance, location and position of physical evidence, and the forensic laboratory examination of the physical evidence?
Sketching the crime scene
Photographing the crime scene
Reconstructing the crime scene
Video recording the crime scene
A crime scenes boundaries are permanent and cannot change once defined.
The six patterns of searching a crime scene are: link, line or strip, grid, zone, wheel, and spiral methods?
Which of the following is not a technique for obtaining measurements for the crime scene sketch?
Rectangular coordinates
Baseline
Triangulation
Four corner
Which of the following is not a component of crime scene documentation?
Notes
Sketches
Testimony
Photographs
How many pairs of chromosomes, including the gender chromosome, do humans have?
4
15
26
How many loci have been selected as the standard in the United States?
6
10
13
24
Who is mitochondrial DNA inherited from?
Both parents
Mother
Father
Neither
What does the acronym CODIS stand for?
Central Organization of DNA Information Standards
Combined DNA Integrative Software
Combined DNA Information Systems
Central Office of DNA Integrative Systems
The first DNA tests developed by Sir Alec Jeffreys were known as Replication Fragment Length Polymorphism (RFLP) tests.
The replication of DNA for analysis is a process known as:
RFLP
STR
PCR
CODIS
Attacks against the science of DNA are now rare in court.
Which of the following is not a possible outcome of a DNA analysis?
Exclusion
Non-exclusion
Inconclusive
Probable
The name of the provider of the DNA sample is included in a CODIS DNA profile.
Current DNA tests examine genes for information on eye color, height, and hair color.
When did the concept of drugs being legal or illegal come about in the United States?
1920's
1960's
1970's
1990's
The Controlled Substances Act classifies drugs into how many schedules?
3
5
7
What type of examination identifies physical characteristics specific to plants that are considered controlled substances?
Botanical examination
Biological examinations
Serological examinations
Chemical examinations
What is the chemical color test to confirm the presence of cannabinoids and THC?
Duquenois Levine test
Marquis test
Cobalt thiocyanate test
Phenolphthalein test
What is the component of the peyote button that produces hallucinogenic effects?
THC
Psilocin
Mescaline
Schedule V drugs have the highest potential for abuse and have no accepted medicinal uses.
The possession of mushrooms is technically legal.
Which of the following is an example of a Schedule I drug?
Heroin
Morphine
Cannabis
Which of the following is required in a criminal prosecution of possession of a controlled substance?
Amount of substance in the court exhibit
Spectroscopy
Identification
Instrumentation used
There are two crucial aspects to the investigation of arson. The first is the determination of the cause of the fire. The second is:
Identification of the suspect
Gathering of insurance information
Determination of motive
Determination of the origin
The rapid oxidation process with the evolution of heat and light is the definition of:
Explosion
Fire
Pyrolysis
Detonation
Any substance that will burn or support combustion is known as:
Heat
Flame
Fuel
Volatile reaction
Which of the following is not acceptable as an evidence container for suspected arson evidence?
Paint cans
Nylon bags
Plastic bags
Glass jars
What is the primary cause of death in fatal fires?
Burning
Carbon monoxide poisoning
Carbon dioxide poisoning
Normal atmospheric air contains what percentage oxygen?
21%
38%
74%
The transfer of heat by a circulating medium, usually air or liquid, is known as:
Radiation
Compression
Convection
Conduction
This type of heat moves in invisible waves and travels the same speed as visible light:
Which of the following is not an element of the fire tetrahedron?
Oxidation
Oxygen
Fuel can exist in three states: solid, liquid, and gas. Each of these three states can be volatized and consumed.
The temperature at which a liquid gives off sufficient vapors to form an ignitable mixture at it’s surface is known as the:
Upper combustible limit
Fire point
Lower combustible limit
Flash point
Which of the following is not a basic method of heat production?
Fires will generally extend horizontally and vertically from the point of origin and follow the path of least resistance.
Fire intensity doubles for every __________ degrees Fahrenheit rise in temperature.
18
50
120
Which of the following is not a classification of fire cause?
Providential
Revenge
Incendiary
Motor vehicles usually only have two sources of ignition in fires. The first is electrical. The second is:
Compressed fuel
The flash point of gasoline is 45 degrees Fahrenheit.
There are two characteristics of fingerprints that makes them capable of being used as a means of personal identification. The first is that fingerprints are unique. The second is that:
Fingerprint patterns are unique
Depth of friction ridges are unique
Fingerprints degrade with age
Fingerprints do not change
At what point in life do fingerprints form?
Immediately after birth
At inception
12th to 13th week of development
Between the first and second year of birth
It has been shown that identical twins can have identical fingerprints.
Which of the following is not an area in which friction ridge skin exists on the body?
Soles of the feet
Fingers
Palms
Forehead
Which of the following is not a fingerprint pattern?
Double loop whorl
Tented arch
Palmar whorl
Ulnar loop
Which of the following is not minutiae used to identify fingerprints?
Looped ridge
Ending ridge
Ridge dot
Bifurcation
This fingerprint pioneer published the book Finger Prints that is still regarded as a classic in the field of fingerprint identification.
Sir William Herschel
Sir Edward Henry
Sir Alec Jeffreys
The following graphic is usually referred to as a(n):
Felony card
Arrest card
Ten print card
Application card
AFIS is the Automatic Fingerprint identification System.
The national criminal database maintained by the FBI is:
AFIS
NIBIN
IAFIS
IBIS
A plastic print is an evidentiary print that is invisible at a crime scene.
Evidentiary fingerprints are composed of approximately ________ % water.
25.5
50.2
75.6
98.5
Which of the following is not a physical method for developing latent prints?
Magnetic brush and powder
Powder dusting
Iodine fuming
Small particle reagent
A method used to develop latent prints on wet surfaces is known as:
Cyanoacrylate ester fuming
Gentian violet
Iodine fuming will ruin documents on which it is applied.
Ninhydrin reacts with what substance left in fingerprints?
Pheromones
Amino acids
Amido black and Coomassie Blue R250 are chemicals used to enhance impressions made in:
Fats
Semen
Which of the following is used for processing the adhesive side of tape?
Cyanoacrylate esters
Rhodamine 6G
Obtaining latent prints from human bodies has proven to be very successful.
When processing an item of evidence for the presence of latent prints, always start with the least destructive methods.
The acronym ACE-V is:
A methodology for identifying firearms
A methodology for comparing Toolmarks
A methodology for the analysis of fingerprints
A FBI criminal history database
What type of gun holds cartridges in a firing chamber in a rotating cylinder?
Semi-automatic pistol
Revolver
Lever action rifle
Single action rifle
What is the term used to describe the diameter of a circle that is tangent with the top of the lands of the rifling?
Gauge
Bore
Caliber
Cartridge
What part of a shotgun is a constriction in the muzzle that serves to concentrate the shot pattern?
Choke
Shot column
What is the term used to describe the number of spherical lead balls having the diameter of the interior of the barrel that weigh one pound?
What is the most common type of projectile for a shotgun?
Rifled slug
Semi-jacketed
Wad
Pellets
Which of the following is considered a class characteristic of rifling?
Number of land and grooves
Direction of twist
What network was developed to facilitate linking firearms evidence in cases in different jurisdictions?
AAFS
Which of the following is a category of tool mark?
Sliding
Cutting
Firearms examiners should always place an identification mark on the side of a projectile.
The first step in tool mark analysis is to fit the suspect tool into the tool mark.
Which of the following is the best way to remove a bullet from a wall?
Remove with metal forceps
Remove with metal tweezers
Remove with rubber coated forceps
Remove the wall containing the bullet
Shotgun wads or shot cups can act as secondary projectiles entering the body at close range.
Cartridges can be rimfire or centerfire based on the location of the:
Projectile
Propellant
Primer
Cannellure
The bullet shape seen in the below photograph is a:
Full metal jacket
Hollow point
Wadcutter
Hollow point bullets are more likely to ricochet than full metal jacketed bullets
As a general rule, shotgun pellets spread one inch laterally for every _______________ downrange.
One foot
One yard
Six feet
Four yards
When conducting muzzle to target distance testing, the suspect gun and suspect ammunition must be used. No substitutions are allowed.
An irregular blown out entrance wound is known as a:
Distance wound
Near contact wound
Stellate wound
Close wound