Search Methods
Polygraph
Crime Scene
Finger Prints
Trace Evidence
Miscellaneous
Blood
Hair and Digital Media
100
The search method that doesn't have a formal geometric pattern or is easily definable
Link Method
100
Sometimes used in forensic cases to help determine the truthfulness of someone who may be connected to a possible crime.
Polygraph/Lie Detector Test
100
The term for someone that has just died
Decedent
100
Name the four fingerprint patterns
Arch, tented arch, loop and whorl
100
The component of hair that gives it color
Cortex
100
The point in time when a person ceases to exist
Time of Death
100
What are the four main blood types
A, B, AB, O
100
The outer most part of a hair
Cuticle
200
Used on large, outdoor crime scenes. Searchers follow the first line pattern and search in the same manner as the line method. Once the first line pattern is complete, searchers realign on the other line pattern.
Grid Method
200
The physiological data (vital signs) that is measured while conducting a polygraph...
Blood pressure, heart rate, respiratory rate, and skin conductivity
200
The name of the decedent in PLTW who has just died
Anna Garcia
200
What is the term for tiny patterns found on each finger?
Minutiate Details
200
Tiny fragments of physical evidence, such as hairs, fibers from clothing or carpeting, and pieces of glass.
Trace evidence
200
The place where an offense has been committed
Crime Scene
200
The blood type associated with agglutination in both the Anti-A antibody and the Anti-B antibody wells
AB
200
The part of the hair that is responsible for its color
Cortex
300
Used on large, outdoor crime scenes. Members of the search team are arranged at regular intervals, usually arm’s length, and then proceed to search along straight lines.
Line (or strip) Method
300
The type of questioning used at the beginning of an interrogation
Baseline questioning: used as a starting point for comparison of physiologic behaviors of the person of interest
300
Signs, items, or material that supports, or corroborates a crime
Evidence
300
Finger print pattern that slopes up and down resembling a mountain
Arch
300
A type of evidence found on electronic devices that store data, such as computers, smartphones, or tablets
Digital Evidence
300
What are the 3 components of a crime scene?
Sketch, Legend, Key
300
The blood type associated with agglutination in neither the Anti-A serum or Anti-B serum
O
300
What can you use to examine hair up close?
Microscope
400
Used on crime scenes that are comprised of readily definable areas, such as in houses or buildings.
Zone Method
400
The types of questions a polygraph uses
Yes/No questions
400
Someone who law enforcement thinks may have information related to a possible crime.
Person of Interest
400
Finger print pattern where ridges curve to form a circular shape
Whorl pattern
400
Fingerprint patterns can change over time
(T/F)
False. Patterns don't change. Minutiae can.
400
The importance of knowing the crime scene ambient temperature.
To calculate time of death. Really hot and cold temperatures can affect decomposition rates.
400
The blood type that is the universal donor
O-
400
What is the main protein found in hair?
Keratin
500
Used on crime scenes with no physical barriers, such as open water. Can either begin at the center and move
Spiral Method
500
The reason why polygraphs are not admissible in court
Not always accurate, some people can manipulate their responses, too many variables
500
Branch of science that analyzes evidence for investigative purposes regarding criminal and civil matters.
Forensic Science
500
Can two people have the same fingerprints?
No
500
The most common presumptive blood test. This test uses a compound known as phenolphthalein, which reacts with the iron carried by hemoglobin
Kastle-Meyer
500
This Human Body System includes hair, skin, and nails
Integumentary System
500
The blood type that is the universal recipient
AB+
500
The inner most part of a hair shaft. Can be absent with some hair types
Medulla
600
Search method used on small circular crime scenes
Wheel or ray method
600
The name of the measurements—specifically pulse rate, temperature, respiration rate, and blood pressure—that collectively measure essential body functions.
Vital signs
600
The importance of finding certain insects on a dead body or its eggs
Helps create a timeline to determine time of death
600
How many minutiae points do you need for a positive match?
12-15
600
Blood test that reacts with hemoglobin and turns a violet color. Usually used on porous surfaces, such as a large stain on a carpet
LCV- Leucocrystal Violet
600
A function of white blood cells
White blood cells are part of the body's immune system. They help the body fight infection and other diseases.
600
The component of blood that helps with clotting
Thrombocytes or Platelets
600
The information about a particular person that exists on the internet as a result of their online activity
Digital footprint
700
The professionals that examine the location, distribution, and shape of blood droplets, stains, puddles, and pools.
Blood splatter analyst
700
Explain how you can analyze a polygraph to tell if someone is being truthful?
Look to see if the relevant questions went outside of their baseline questions
700
The name of the key on a crime scene sketch that has the date, time, location and temperature
Legend
700
What is the name of the minutiae point that is a tiny circle
A dot
700
This chemical/product glows bright blue in the dark when it comes in contact with blood.
Luminol
700
The two different types of blood identification tests
Presumptive and confirmatory testing
700
This blood type has no antibodies in the plasma
AB
700
The reason why we analyze hair at crime scenes even though it can't 100% positively ID someone
It can eliminate a person of interest
800
What is the name of one strategy investigators use to identify a particular area from which they take all their measurements on a crime scene sketch?
Point of origin
800
How could you manipulate a polygraph by trying to control your heart rate from increasing?
Hold your breath/slow down your breathing
800
What is Locard’s Exchange Principle
A theory that states that every time you make contact with another person, place, or thing, it results in an exchange of physical materials. This concept is referred to as Locard’s exchange principle, which hypothesizes that it is impossible for a criminal to act without leaving traces.
800
A fingerprint pattern where ridges curve back on themselves forming a particular shape
Loop
800
Small, circular blood droplets with no tail are what type of blood spatter?
Passive
800
Liquid portion of the blood
Plasma
800
The relationship between height and blood spatter diameter
The higher the distance from the surface, the larger the diameter of blood
800
What sort of information can we obtain from digital media?
Who they were with, their mindset before death, places they visited, communication with other people, timeline of events before death
900
Why is it important to note the ambient (room) temperature of a potential crime scene?
To calculate an accurate time of death
900
What is the term for physical changes in the body due to stress or anxiety?
Physiologic
900
The reason the hand-written note is important in the Anna Garcia case
Possible fingerprints, and analysis of the handwriting, might indicate suspects
900
Name three common minutiae details
Ridge ending, fork, short ridge, dot, bridge, hook, eye, delta...
900
Anything that stimulates an immune response.
Antigen
900
This blood type has no antigens in the RBCs
O
900
Another name for white blood cells
Leukocytes
900
Whose hair was on Anna's back?
Eric Piedmont (boyfriend)
1000
What is the term for an educated guess?
Hypothesis
1000
If a polygraph is inadmissible in court, why do they conduct them?
To guide their investigation
1000
The reason for wearing PPE at a crime scene
To protect yourself from bodily fluids, and to prevent contamination of the crime scene
1000
What is a print left on a surface by the oils on one's skin, and such a print is not usually visible to the naked eye.
Latent fingerprints
1000
A protein produced by B cells in the blood; it works to fight off pathogens. Also called an immunoglobulin.
Antibody
1000
Name the 5 types of "Manner of Death"
Natural, Accidental, Homicide, Suicide, Undetermined
1000
The protein in red blood cells that carry oxygen through the body
Hemoglobin
1000
Does finding a hair on a victim mean they committed the crime?
Not necessarily