Principles of Exchange
Director of the world's first forensic lab in Lyon, France. Developed the Locard Exchange Principle.
Who is Dr. Edmond Locard?
Narrows an identity to a group of persons or things.
What is Class Evidence?
Photographing the crime scene, close-up photo of evidence.
What is step 4, seeing the scene?
These are the first responders that secure the crime scene.
Who are Police Officers?
The location where the crime scene took place.
What is primary crime scene?
This shape in fingerprints looks like a tornado.
What is a whorl?
Material that is transferred when one person comes in contact with another.
What is trace evidence?
Narrows an identity to a single person or thing.
What is Individual Evidence?
Using a pattern to ensure all evidence is secure.
What is step 6, searching for evidence?
These individuals document, collect evidence, record, and photograph the crime scene.
Who are Crime-Scene Investigators?
Evidence that (if true) proves an alleged fact, such as an eyewitness account of a crime.
True or False - Identical twins have the same fingerprints?
False, no one has the same fingerprints, they are genetic and environmental.
List 3 examples of trace evidence.
What are hair, fingerprints, soil, blood, paper, tissue, or fibers?
Includes fingerprints, tire impressions, fiber, bullet casings.
What is physical evidence?
This step involves questioning witnesses individually to avoid collusion.
What is step 2, separating the witnesses?
This person may be consulted if evidence requires his or her expertise in guns and bullets.
Who is a Ballistic specialist?
A small but measurable amount of physical or biological material found at a crime scene.
What is trace evidence?
The 3 main shapes of fingerprints?
What are whorls, arches, and loops?
Determines the amount of evidence that may be transferred in the Locard Exchange Principle.
What is the extent of contact, intensity and duration?
Fingerprints that have an shape like a hill.
What are arches
This step involves determining the primary and secondary crime scene.
What is step 3, scanning the scene?
The person who draws the suspect based on the description from an eye witness?
Who is the Sketch artist?
A location other than the primary crime scene, but that is in some way related to the crime, where evidence is found.
Used to stick to fingerprint oils in order to lift the print.
What is fingerprinting powder?
Explain the Locard Exchange Principle.
What is when a person comes in contact with another person or object a cross-transfer of physical evidence can occur?
Two types of circumstantial evidence.
What are biological and physical evidence?
This step involves safety, securing evidence, and logging requests for additional help.
What is step 1, secure the scene?
This individual determines the cause of death.
Who is a Medical Examiner?
This group presents more evidence to exonerate convicted people who were falsely incarcerated.
Who is the Innocence Project?
Used to lift fingerprints off of a difficult shaped object such as a golf ball or door knob4.
What is imaging putty?
Includes bodily fluid, hair, and natural fibers.
What is biological evidence?
This step involves creating a rough sketch to include all evidence, fixed points and directions, and all information to complete a final sketch.
What is step 5, sketching the scene?
This person looks for leads & interviews witnesses.
Who is a detective?
Used by law enforcement, issued by a Judge, to go into private property to find evidence?
What is a Search Warrant?
Fingerprints are made up of these substances. complete.
What are oils, minerals and water?
This step involves establishing a chain of custody and properly packaging evidence.
What is secure and collect evidence?
What is pardon?
List the 7 steps of crime-scene investigation in order?
What are secure the scene, separating the witnesses, scanning the scene, seeing the scene, sketching the scene, searching for evidence, & secure and collect evidence?