Forensic Science Exam Bank
Course
Introduction
Forensic Science is an interdisciplinary course that explores the application of scientific principles and techniques to solve crimes and analyze evidence. Students will gain foundational knowledge in areas such as forensic biology, chemistry, toxicology, and crime scene investigation. Through theoretical learning and practical case studies, the course covers topics such as evidence collection, DNA analysis, fingerprinting, forensic pathology, and the role of forensic scientists in the legal system. Emphasis is placed on critical thinking, ethical considerations, and the importance of forensic science in modern criminal investigations.
Recommended Textbook
Criminalistics An Introduction to Forensic Science 12th Edition by Richard Saferstein
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20 Chapters
1894 Verified Questions
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Page 2
Chapter 1: Introduction
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106 Verified Questions
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Sample Questions
Q1) The effectiveness of an expert's testimony does not usually depend on the educational background of the expert.
A)True
B)False
Answer: False
Q2) The exchange of evidence principle was theorized by:
A) Gross.
B) Locard.
C) Galton.
D) Osborn. Answer: B
Q3) The Bureau of Alcohol,Tobacco,Firearms and Explosives is a state-run agency.
A)True
B)False
Answer: False
Q4) Forensic odontologists look at bones to identify victims.
A)True
B)False Answer: False
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Chapter 2: The Crime Scene
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131 Flashcards
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Sample Questions
Q1) The need to prevent the immediate loss or destruction of evidence is justification for a warrantless search.
A)True
B)False
Answer: True
Q2) Physical evidence at a hit-and-run scene could include:
A) Fiber and tissue.
B) Glass fragments.
C) Fabric impressions.
D) All of the above
Answer: D
Q3) An accurate ________ of everyone who enters or leaves the scene should be kept. Answer: Log
Q4) The line and spiral search pattern methods can be performed effectively by one person.
A)True
B)False
Answer: True
Q5) The existence of emergency circumstances may justify a(n)________ search. Answer: Warrantless
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Chapter 3: Physical Evidence
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Sample Questions
Q1) Name three forensic databases and describe the type of information stored in each. Answer: Answer (should include points such as):
Integrated Automated Fingerprint Identification System (IAFIS),a national fingerprint and criminal history system maintained by the FBI; The Combined DNA Index System (CODIS),which stores DNA profiles; The National Integrated Ballistics Information Network (NIBIN)contains records of markings made by firearms on bullets and cartridge casings recovered from crime scenes;
The International Forensic Automotive Paint Data Query (PDQ)database,which contains chemical and color information pertaining to original automotive paints; and SICAR (shoeprint image capture and retrieval)contains a comprehensive shoe sole database that includes more than three hundred manufacturers of shoes with more than eight thousand different sole patterns.
Q2) Class evidence is not unique and therefore not useful to forensic scientists.
A)True
B)False
Answer: False
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5
Chapter 4: Crime Scene Reconstruction: Blood Stain
Pattern Analysis
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Sample Questions
Q1) What should one surmise if a flow found on an object or body does not appear consistent with the direction of gravity?
A) The object or body was within 5 feet of the blood source.
B) The object or body was moved after the blood had dried.
C) The object or body was not moved.
D) The object or body was at a lower temperature than the blood.
Q2) Generally,bloodstain diameter ________ as height increases.
A) Decreases
B) Remains unchanged
C) Increases
D) Increases lengthwise and decreases widthwise
Q3) Drops propelled from a pointed surface will be smaller and the pattern more
Q4) Setting up a rectangular border of rulers around the patterns and then placing a small ruler next to each stain describes the:
A) String method
B) Stake method
C) Grid method
D) Perimeter ruler method
6
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Chapter 5: Death Investigation
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Sample Questions
Q1) A(n)________ in its broadest definition is simply the examination of a body after death.
Q2) It is not feasible for a medical examiner to respond in-person to every death scene.
A)True
B)False
Q3) What does hemoglobin transport in the blood?
A) Hydrogen
B) Carbon dioxide
C) Carbon monoxide
D) Oxygen
Q4) Which of the following techniques can be used to estimate the time of death?
A) Rigor mortis
B) Eye fluid potassium levels
C) Livor mortis
D) All of the above
Q5) Explain the importance of the forensic pathologist or medical examiner making proper classifications of a victim's wounds during the autopsy.
Q6) A distinct smell of burnt almonds may accompany a death by ________ toxicity.
Q7) The goal of a(n)________ autopsy is to determine the cause and manner of death.
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Chapter 6: Fingerprints
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Sample Questions
Q1) A chemical method used for developing prints on nonporous surfaces is:
A) Physical developer.
B) Ninhydrin.
C) Fuming with cyanoacrylate.
D) DFO.
Q2) Why is it pointless to try to obscure or obliterate one's fingerprints by scarring or otherwise damaging the skin?
Q3) A loop must have at least one ________.
Q4) Which chemical treatment produces a white-appearing latent print?
A) Ninhydrin
B) Iodine fuming
C) Superglue fuming
D) Physical developer
Q5) The fingerprint pattern accounting for only 5% of all known patterns is the:
A) Arch.
B) Radial loop.
C) Ulnar loop.
D) Whorl.
Q6) ________ include ridge patterns that are generally rounded or circular and have two deltas.
Page 8
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Chapter 7: Forensic Biometrics
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Sample Questions
Q1) The iris begins to form at the ________ stage of pregnancy.
Q2) When using IrisCode,a single iris can be stored using only ________ bytes of data.
Q3) Who was the first researcher who attempted to identify someone using the iris?
A) Matthew Turk
B) Alex Pentland
C) John Daugman
D) J. H. Doggart
Q4) Explain the collection steps in gathering biometric data.
Q5) Out of the various forms of behavioral biometrics,which of the following is the least accurate?
A) Voice recognition
B) Keyboard dynamics
C) Gait recognition
D) Handwriting
Q6) The first process that each biometric system must perform is known as the enrollment process.
A)True
B)False
Q7) The FBI implemented the ________ in 2013.
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Chapter 8: The Microscope
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Sample Questions
Q1) When using a compound microscope,the areas above and below the depth of focus are best viewed by adjusting the:
A) Eyepiece lens.
B) Fine or coarse adjustment.
C) Intensity of the illumination.
D) Numerical aperture.
Q2) A parfocal microscope:
A) Eliminates the need to stain the specimen to be viewed.
B) Has two ocular lenses.
C) Requires a polarized light source.
D) Allows for ease of focusing when switching from low to high power.
Q3) A forensic scientist would use vertical illumination when studying opaque specimens.
A)True
B)False
Q4) The lens nearest the specimen is called the ocular lens.
A)True
B)False
Q5) How can a scanning electron microscope be used to identify the elements present in a specimen?
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Chapter 9: Firearms, tool Marks, and Other Impressions
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Sample Questions
Q1) Distance determination is the process of determining the distance between the ________ and a target.
Q2) Which of the following results is not possible from a laboratory examination of firearm evidence?
A) Determining that two or more cartridge cases were fired from the same weapon
B) Determining how far from the victim the weapon was held
C) Restoring serial numbers ground off the gun
D) Identifying a bullet as having been combined with a particular shell prior to being discharged
Q3) As the distance to the target of a shotgun blast decreases,the pellets separate and spread out.
A)True
B)False
Q4) Generally,the gauge of a shotgun is ________ to the diameter of its barrel.
A) Directly related
B) Not related
C) Indirectly related
D) None of the above
Q5) The Griess test is used to determine the presence of ________.
Q6) How are striations useful for comparing bullets?
Page 11
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Chapter 10: Matter, light, and Glass Examination
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Sample Questions
Q1) A gas has neither a specific shape nor a specific volume.
A)True
B)False
Q2) Different phases are distinguished from one another by definite visible boundaries.
A)True
B)False
Q3) The smallest unit of a(n)________ is an atom.
Q4) 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.
Q5) The basic metric unit for volume is the:
A) Centimeter.
B) Liter.
C) Milliliter.
D) Gram.
Q6) One inch is equivalent to ________ centimeters.
Q7) ________ glass is used commonly in bottles and windows.
Page 12
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Chapter 11: Hairs and Fibers
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Sample Questions
Q1) Which part of the hair shaft is most resistant to chemical decomposition?
A) Cortex
B) Medulla
C) Follicle
D) Cuticle
Q2) The cortex derives its major forensic importance from the fact that it gives hair its color.
A)True
B)False
Q3) Microscopic hair comparisons must be regarded by police and courts as:
A) Conclusive
B) Individualizing
C) Useless
D) Presumptive
Q4) Collecting ________ full-length hairs from all areas of the scalp normally ensures a representative sampling.
Q5) The ________ is embedded with pigment granules that give hair its color.
Q6) What two features make hair a good subject for establishing individual identity? To which layer of the hair shaft are much of these features attributed?
Q7) Fibers manufactured from natural raw materials are ________ fibers.
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Chapter 12: Drugs
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Sample Questions
Q1) The Controlled Substance Act established five schedules of classification for substances based on the drugs:
A) Medical value.
B) Potential for physical dependence.
C) Potential for psychological dependence.
D) All of the above
Q2) The two phases in a forensic scientist's analytical scheme are screening and ________.
Q3) The most satisfactory way of simultaneously separating and tentatively identifying drugs is by:
A) Ultraviolet spectrophotometry
B) Infrared spectrophotometry
C) Emission spectroscopy
D) Chromatography
Q4) A newly synthesized drug,called MET,is identified by the DEA.What drug schedule should this drug be classified under given the following established characteristics: high potential for abuse,a potential medical use requiring severe restrictions,a potential for severe psychological or physical dependence.
Q5) The source of most narcotic analgesics is ________.
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Chapter 13: Forensic Toxicology
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Sample Questions
Q1) Following field sobriety testing,a driver is transported to the police station for an official breath alcohol test.Explain what safe guards and instrumental parameters must be in place before,during,and after the breath test to ensure its accuracy.
Q2) For a longer total time required for complete absorption,the peak blood-alcohol concentration will be lower.
A)True
B)False
Q3) To analyze blood for alcohol,forensic labs normally use:
A) TLC.
B) GM/MS.
C) LC.
D) GC.
Q4) The rate of alcohol absorption on a full stomach is ________ the rate of absorption on an empty stomach.
A) The same as
B) Less than
C) Greater than
D) None of the above
Q5) About 95-98 percent of alcohol is oxidized to water and ________.
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Chapter 14: Metals, paint, and Soil
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Sample Questions
Q1) What is the logical first step in soil analysis?
A) Examination for presence of debris under low-power magnification
B) Comparison of dried soil sample for color and texture
C) Use of the density-gradient tube technique
D) Examination of minerals and rocks under high-power magnification
Q2) The emission spectrograph is used to determine the:
A) Mass of a substance.
B) Weight of a substance.
C) Crystalline structure of a substance.
D) Elemental composition of a substance.
Q3) The major advantage of neutron activation analysis is that it provides a nondestructive method for identifying and quantitating trace elements.
A)True
B)False
Q4) Paint specimens are best compared side by side under a ________ microscope.
Q5) Neutrons carry no charge.
A)True
B)False
Q6) The three basic subatomic particles are the proton,electron,and ________.
Q7) Elements selectively absorb and emit ________.
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Chapter 15: Forensic Serology
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Sample Questions
Q1) A(n)________ is a protein in the blood serum that destroys or inactivates a specific antigen.
Q2) ________ is the fluid portion of the blood.
Q3) To determine whether a bloodstain is of human or animal origin,the serologist will perform:
A) A precipitin test.
B) The luminol test.
C) An analysis with Hemastix strips.
D) RIA.
Q4) Polyclonal antibodies are more useful than monoclonal antibodies for the forensic scientist.
A)True
B)False
Q5) The presence of ________ indicates that a stain is seminal in nature.
A) PGM
B) Peroxidase
C) p30
D) DNA
Q6) The reaction of luminol with blood results in the production of ________ rather than color.
Page 17
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Chapter 16: DNA: the Indispensable Forensic Science Tool
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Sample Questions
Q1) How should blood-containing clothes from a victim be packaged?
A) In an airtight metal container
B) In an airtight clear plastic container
C) In a metal paint can
D) In breathable paper after blood has dried
Q2) Information from the Human Genome Project will:
A) Help to reveal the role and implications of evolution.
B) Be useful for diagnosing and treating genetic diseases.
C) Reveal the location of a gene on a particular chromosome.
D) All of the above
Q3) The evidence suggests which suspect raped the victim?
A) Suspect A
B) Suspect B
C) Suspect C
D) The evidence shows that none of these suspects is a match.
Q4) Longer DNA strands are more stable and less subject to degradation than shorter strands.
A)True
B)False
Q5) ________ present in soil rapidly degrade DNA.
Page 18
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Chapter 17: Forensic Aspects of Fire and Explosion Investigation
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Sample Questions
Q1) A burning cigarette is an example of spontaneous combustion.
A)True
B)False
Q2) Examples of secondary explosives do NOT include:
A) TNT
B) PETN
C) RDX
D) Lead azide
Q3) Arson investigators must work quickly to collect evidence at a fire scene because:
A) Accelerant residues may quickly evaporate.
B) Safety requirements may require that cleanup and salvage operations begin quickly.
C) Accelerants in soil may rapidly degrade.
D) All of the above
Q4) Which is an explosive readily detonated by heat or shock?
A) Dynamite
B) Secondary explosive
C) Primary explosive
D) ANFO
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Chapter 18: Document Examination
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Sample Questions
Q1) What are natural variations? How can they be useful for detecting forgeries?
Q2) When comparing sample writing to a suspect document,the age difference between the documents should be no more than:
A) Six to twelve months
B) Twelve to eighteen months
C) Two to three years
D) Five to seven years
Q3) Margins,spacing,crowding,insertions,alignment,spelling,punctuation,phraseology,and grammar cannot impart individual variations.
A)True
B)False
Q4) Two analytical techniques used to analyze writing inks are microspectrophotometry and thin-layer chromatography.
A)True
B)False
Q5) Two analytical techniques used to analyze writing inks are microspectrophotometry and ________ chromatography.
Page 20
Q6) ________ printers include inkjet and laser printers.
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Chapter 19: Computer Forensics
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Sample Questions
Q1) ROM stores software programs and instructions while the computer is turned on.
A)True
B)False
Q2) The ________ is the main chip within the computer.
Q3) List four places where a forensic computer examiner might look to determine what websites a computer user has visited recently.What kind of leads could this information provide to the investigator?
Q4) An IP address typically takes the form ###.###.###.###,in which ### can be any number from 0 to 255.
A)True
B)False
Q5) What is fragmentation? What effect does fragmentation have on a hard disk drive (HDD)?
Q6) A motherboard:
A) Is the main circuit board within a computer.
B) Has a socket to accept RAM.
C) Connects to every device used by the system.
D) All of the above
Q7) The travel history of a suspect can be documented using ________ and map data from a mobile device.
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Chapter 20: Mobile Device Forensics
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Sample Questions
Q1) What feature on a mobile device can help an investigator establish a timeline?
A) GPS
B) NFC
C) Android Beam
D) Bluetooth
Q2) It may not be possible to recover deleted file items from a mobile device,such as:
A) E-mails
B) Text messages
C) Photos
D) All the above
Q3) What type of network devices started using operating systems?
A) 1G
B) 2G
C) 3G
D) 4G
Q4) What value can be gleaned from each generation of mobile device (1G,2G,3G,and 4G)?
What are their strengths and weaknesses?
Q5) In many ways mobile device forensics is similar to ________ forensics.
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