Forensic 4 - Prof. Trinh, chapter guide. PDF

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Prof. Trinh, chapter guide....

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NAME: _____________________________________ CHAPTER 4 REVIEW QUESTIONS 1. What is physical evidence? • Physical evidence encompasses any and all objects that can establish that a crime has or has not been committed. • Can provide a link between a crime and its victim or a crime and its perpetrator.

2. What is the most important consideration in handling and processing physical evidence? • Investigators handle and process physical evidence in a way that prevents changes to the evidence. • Avoiding contamination, breakage, evaporation, accidental scratching or bending, improper or careless packaging.

3. What is the proper way to package charred debris from the scene of a suspicious fire? Why is such packaging recommended? • In airtight metal or glass containers to prevent the loss of accelerant vapors.

4. Biological materials should not be stored in airtight containers.

5. Name 5 likely sources of DNA evidence. • Soil, blood, glass, hair, fibers.

6. A piece of paper folded in a specific way to be used as an evidence-collection container is known as a(n) druggist fold.

7. Why should all items of evidence be placed in separate containers? • Packaging evidence separately prevents damage through contact and prevents crosscontamination.

8. What type of protective clothing and equipment should an investigator wear when handling potentially infectious material? • Double-gloved latex gloves and possibly chemical resistant clothing, Tyvek-type shoe covers, a particle mask/respirator, goggles, or face shields.

9. Name four situations in which the Supreme Court of the United States has ruled that a warrantless search is justified. 1. The existence of emergency circumstances. 2. The need to prevent the immediate loss or destruction of evidence 3. A search of a person and property within the immediate control of the person provided it is made incident to lawful arrest. 4. A search made by consent of the parties involved.

10. Success in the recognition and collection of physical evidence is determined primarily by what factor? a. Notoriety of the case b. Time available to the evidence collectors c. Skill of personnel processing the crime scene d. Type of evidence involved...