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Forensic Science Exam Study Guide/61 Answered Questions 100% Correct!!
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Forensic Science Exam Study Guide/61 Answered Questions 100% Correct!!
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Forensic Science Exam StudyGuide/61 Answered Questions 100%
Correct!!
States that when a person comes into contact w/ an object or another
person, a cross-transfer of physical evidence can occur - -Define Locard's
Principle.
-1) Securing the Scene
2) Separating the Witnesses
3) Scanning the Scene
4) Seeing the Scene
5) Sketching the Scene
6) Searching for Evidence
7) Securing and Collecting Evidence - -Review the steps in investigating a
crime scene (The 7 S's)
-1) Observation - gathering information around us (i.e.
eyewitnesses they tell the accounts of a crime scene
(varies with each witness))
2) Evidence - studies the different types of evidence
3) Crime Scene Investigators - these consist of police
officers, crime-scene investigators, medical examiners (
or coroners), detectives, and specialists
4) Fingerprinting - studies the different type of fingerprints
and what chemicals are used to lift them
5) Hair and Fibers - studies the different types of hair and
fibers that are found at the crime scene
6) Toxicology - the study of drugs, poisons, toxins, and
other substances that harm a person when used for
medical, recreational, or criminal purposes - -Review all the different
branches of forensic science and know what they study, ballistics, trace
evidence, entomology.
-1) emotional state
2) whether you're alone or w/ a group
3) the number of people and/or animals in the area
4) what type of activity is going on around you
5) how much activity is occurring around you - -What are the key factors
that determine how a witness views a crime scene?
-states that when a person comes into contact w/ an object or another
person, a cross-transfer of physical evidence can occur; intensity, duration,
, nature of the entities in contact determine the extent of the transfer - -What
is the Locard Principle?
--the exaggerated portrayal of forensic science on TV shows
that results in unrealistic public perceptions
-it influences the jury to have unrealistic expectations in a
forensic science case - -What is the CSI effect, how does it impact a jury in a
forensic science case?
--animal or human hair
-fingerprints
-soil or plant material (including pollen)
-body fluids
-fiber or debris from clothing
-paint chips
-broken glass
-chemicals (such as drugs or explosives) - -What are some examples of trace
evidence?
-Loop: a fingerprint pattern in which the ridge pattern flows inward and
returns in the direction of the origin (the most popular fingerprint pattern)
Arch: a fingerprint pattern in which the ridge pattern originates from one side
of the print and continues to the other side
Whorl: a fingerprint pattern that resembles a bull's-eye - -Describe the
following fingerprint patterns: loop, arch, whorl
-They are lifted by dusting surfaces such as drinking glasses, the faucets on
sinks, telephones, and the like with a fine carbon powder can make a
fingerprint more visible. The chemicals include ninhydrin, cyanoacrylate
vapor, silver nitrate, and iodine fuming. - -Describe how fingerprints can be
lifted and the chemicals used to view them
-Minutiae: the combination of details in the shapes and positions of ridges in
fingerprints that makes each unique; also called ridge characteristics - -
Define minutiae and ridge characteristics
-Latent Prints: a concealed fingerprint made visible through the use of
powders or forensic techniques
Visible/Plastic Prints: a three-dimensional fingerprint made in soft material
such as clay, soap, or putty - -Define latent, visible and plastic prints, and be
able to give examples of situations where each type of print could be found
-new scanning technology and digital systems of identifying patterns - -
What is some of the latest technology used in fingerprinting?
-Medulla: the central core of a hair
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