Daily Trivia

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Daily Trivia

• In ancient India a grain of rice could be used as
  a lie detector.
• The suspect was asked to chew a grain of rice
  then spit it out.
• A suspect who couldnt
  because his or her mouth
  was too dry was declared
  guilty.

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Agenda

• Daily Trivia
• Agenda
• Forensic Science Notes!
• Concept Map
• Brainstorming
• Homework!

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Forensic Science

• I. Intro to Forensics

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A. What is it?

1. Forensics is the study and application of science
   to matters of law.
2. It means the same thing as criminalistics.
3. Focuses on evidence!

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B. Who does it?

• Scientists from any of the following fields
• Biology
• Physical Science
• Ballistics
• Document Examination
• Photography
• Toxicology
• Patter recognition
• (fingerprints)

• Anthropology
• Psychiatry
• Odontology
• Engineering
• Computer technology
• Pathology
• Geology
• Entomology

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C. Where is it done?

• Starts with evidence
  at the crime scene.
• Crime Laboratories
• Federal, state, and local labs
• The FBI has the largest
  crime lab in the world!

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• Many divisions
• Physical science
• Drugs, soil, glass, paint, blood spatters, and
  trace evidence
• Firearms (ballistics)
• Document analysis
• Paper, ink, handwriting
• Biology
• Body fluids, DNA, hair, fibers, plants
• Consult other fields

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D. How is it done?

• Whenever two objects come into contact, there is
  always a transfer of material. The methods of
  detection may not be sensitive enough to
  demonstrate this, or the decay rate may be so
  rapid that all evidence of transfer has vanished
  after a given time. Nonetheless, the transfer
  has taken place.
• - Edmond Locard

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• Follow the scientific method
• Observe the problem, question and collect the
  evidence
• Consider a hypothesis
• Examine, test, and analyze the evidence
• Determine the significance of the evidence
• Evaluate and verify the evidence

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Concept Map

• Use the following terms to create a concept map.
  Expand upon each one!
• Biology
• Technology
• Earth Sciences
• Physics
• Math
• Language Arts

• Chemistry
• Social Studies
• Processing skills/logic
• Other

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Forensic Science

• II. The Crime Scene

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A. Importance

• Location of the evidence
• Where the first impressions are made
• Modus operandi method of operation (MO)

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B. Preserving Isolating

1. Very important
2. Errors at the crime scene can never be made
   right!
3. Destroyed or altered evidence can not be used.

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C. Observe Document

1. Detailed notes are very important
2. Photo video can capture details even the most
   observant investigator may miss.
3. Sketches give perspective to pictures

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D. Search Collect Evidence

• Tag/Flag evidence found
• Photo en situ
• Collect seal evidence
• Dry Bag
• Freeze biological items
• Adhesive tape is good

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Brainstorming
What is evidence?

• As a class, discuss what we think evidence is.
• What are some examples?
• What is NOT evidence?
• Have volunteers write our ideas on the board.
• RAISE YOUR HAND if you want to contribute an idea!

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Homework

• Identify what evidence could be found from this
  crime. How could it be interpreted?