1. Consider the following statement:
“Good Scientific evaluation of evidence can always overcome the results of a poorly conducted crime scene investigation.”
Is this true or false? Turn and talk with your table partner and discuss why you think it is true or false

2. Forensic Science Laboratories

3. Forensic Science Laboratories
The science of forensics is recognized as a critical ingredient in law enforcement and the solution of crimes.
Protecting a crime scene from contamination and gathering and interpreting evidence accurately have become some of the most critical ingredients in crime-solving

4. Basic Forensic Services:
There is a great diversity and quality of services among crime laboratories
Most forensic laboratories offer the following basic services
Physical Science Unit (Trace evidence)
Biology Unit (Serology/DNA)
Firearms Unit (Ballistic)
Document Examination Unit
Photography Unit
Basic Forensic Services:

5. So what kind of job might a forensic scientist do?

6. Evidence Collection Unit
“Bag it and Tag it”
Specially trained personnel that collects and preserves crime scene evidence
Evidence Collection Unit

7. Photography Unit Records the crime scene and physical evidence
Prepares courtroom presentations
Photography Unit

8. Photographing physical evidence
High speed photograph of simulated blood droplet
Photographing physical evidence

9. Evidence Storage
Essential to Maintain the “Chain of Custody”

10. Think Pair-Share (1 minute) (1 minute) Think-Pair-Share
What kind of qualities do people need to have if they worked in those units?
Pair-Share
(1 minute)
Turn to your table partner and share your thoughts

11. Tool for the criminal investigator
Lie Detector Test
Tool for the criminal investigator
Frye Principle determined this evidence not admissible in court
Polygraph Unit

12. A case discussing the admissibility of polygraph test as evidence.
The Court in Frye held that expert testimony must be based on scientific methods that are sufficiently established and accepted
Frye v. United States

13. Used in telephoned threats or tape recorded messages
Voiceprint Analysis

14. Evaluating an individual's competency to stand trial,
defenses based on mental diseases or defects (e.g., the "insanity" defense)
Sentencing recommendations
Consultation and training to law enforcement, criminal justice and correctional systems
Forensic Psychiatry

15. Forensic Engineering
investigate materials, products, structures or components that fail or do not operate/function as intended, causing personal injury

16. Applies principles and techniques of Chemistry, Physics and Geology
Physical Sciences
Applies principles and techniques of Chemistry, Physics and Geology
Firearms /Ballistics
Trace Evidence
Drug Testing/Identification
Document Examination
Fingerprint
Arson

17. Forensic Chemistry/ Drug Testing and Identification
One of the busiest units in a forensic science laboratory
Using various chemical techniques chemists identify drugs accurately and rapidly for law enforcement agencies

18. Drug Testing/Identification

19. Deals with the analysis of both microscopic and macroscopic traces of physical evidence.
Include hairs, fibers, paint, soil, polymers, glass, and impressions
Trace Evidence

20. A forensic scientist examining sheets for trace evidence.

21. Examines: Firearms /Ballistics Firearms Bullets Cartridge cases
Shotgun shells
Ammunition
Garments for residues

22. Firearms /Ballistics Comparison Microscope
uffworks.com/revolve r2.htm

23. Think Pair-Share (1 minute) (1 minute) Think-Pair-Share
What kind of qualities do people need to have if they worked in those units?
Pair-Share
(1 minute)
Turn to your table partner and share your thoughts

24. Document Examination
Studies the authenticity of documents

26. Fingerprint Analysis Processes and examines evidence for fingerprints
Prints are developed and/or enhanced using various powders, chemical, and illumination techniques.
These prints are then visually compared to known inked fingerprints of a suspect or victim, or entered into the Automated Fingerprint Identification System, (AFIS).

27. Performs fire debris analyses
Attempt to determine whether or not a flammable liquid was employed as an accelerant at a fire scene. (i.e., gasoline, charcoal lighter fluid, kerosene, etc.).
Arson

29. On the back of the Do Now: Of the labs we learned today, which one do you think is the most interesting and why?

30. Biological Science Medical Examiners/Forensic Pathology Serology/DNA
Toxicology
Forensic Anthropology
Forensic Entomology
Forensic Odontology
Biological Science

31. Medical Examiners/ Forensic Pathology
Conduct autopsies to determine the cause and manner of death

32. Scientist apply their knowledge of identification of DNA to profiling:
Dried Blood samples
Various body fluids
Serology/DNA

34. Toxicology is the Science of Poisons Perform toxicology testing on:
Autopsy Cases
DWI
Drug Facilitated Rape
Toxicology

35. Forensic Anthropology
The application of the science of physical anthropology and human skeleton.
Most often in criminal cases where the victim's remains are more or less skeletonized.
A forensic anthropologist assist in the identification of deceased individuals whose remains are decomposed, burned, mutilated or otherwise unrecognizable.
Forensic Anthropology

36. Forensic Entomology is the use of the insects, and their arthropod relatives that inhabit decomposing remains to aid legal investigations
mescene.html
Forensic Entomology

38. Forensic dentistry or forensic odontology examination and evaluation of dental evidence
May determine the age and identification of the person to whom the teeth belong using dental records or ante-mortem photographs.
Bite marks, left on either the victim (by the attacker), the perpetrator (from the victim of an attack), or on an object found at the crime scene.
Bite marks are often found on children who are abused.
Forensic Odontology