Forensics Test One

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Forensics Test One
2012-02-29 17:09:35

Forensics test one
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  1. Know the constituional protection of handwriting exemplars.
    Handwriting exemplars are beyond the scope of the 4th and 5th amendment.
  2. Photography can be what kind of evidence?
    documentation and collection
  3. What is the chemical process for sepertaing ink?
    Thin layer chromatography.
  4. What is a mechanical impression?
    An impression made on paper by a machine or simple tool.
  5. What methods can be used to develop latent prints?
    Physical: Powders, small particle reagent, and rough lift

    Chemical: Iodine, DFO, Ninhydrin, Silver Nitrate, Super Glue

    Radiation: UV rays, and laser radiation
  6. What is sublimation?
    Going from a solid to a gas without ever being a liquid.
  7. What are the general specialties under Questioned Document Analysis?
    Handwriting analysis, historical dating, typewriting analysis, fraud investigation, paper and ink analysis, forgery investigation, forensic stylistics, computer crime investigation
  8. What is Locards Exchange principle
    when two objects come into contact with each other a cross transfer occurs
  9. What are the patterns of fingerprints?
    Ulnar loop, radial loop, accidental whorl, plain whorl, central pocket whorl, double loop whorl, tented arch, plain arch
  10. What are Galton details?
    ending ridge, bifurcation, island ridge, dot, bridge, spur, eye, double bifurcation, and trifurcation
  11. What does AFIS stand for and what is it?
    Automated Fingerprint Identification System- compares known ten print cards and can also compare unknown latent prints
  12. What types of exemplars can be collected?
    Requested and non-requested
  13. What is the difference between class and individual characteristics?
    Class characteristics put it in a group or class while individual ties it to something specific.
  14. What are the steps to the Scientific Method?
    • Observe problem
    • Form hypothesis
    • Do experiments
    • Form conclusion
    • Make a theory
  15. What is Forensic Science?
    The application of science to law
  16. What is dactyloscopy?
    The study and classification of fingerprints.
  17. What three types of fingerprints are found at a crime scene?
    • Patent-visible
    • Latent- needs development to be seen
    • Plastic-impression (butter, clay ect.)