2.6 Review and Critical Thinking Questions
1.)What is physical evidence? Provide at least three examples in your answer. •Physical evidence is anything that can establish a crime has occurred and anything that links the crime to a criminal. Three examples of physical evidence are fibers, weapons, and hair. 2.)Describe three ways that a crime scene can be recorded. What is a benefit of each? •To record a crime scene, forensic scientist can use photography, drawings, and videography. Photographs are an important record of the unaltered crime scene, Drawings or sketches provides valuable information when a photograph cannot accurately depict the scale of a room or the relationship of items to each other, Videography has the advantages of both recording the visual elements of a scene, but it can also serve as a form of notes if information is related into the recording. 3.)What is a chain of custody? Why is it important?
•A chain of custody is a list of all persons who had possession of the evidence during the crime investigation. A chain of custody is important because it shows who has had access to the evidence and indicates that it has been in the possession of law enforcement individuals from the time that it is found until the time that it is used in a trial, a chain of custody helps back of the authenticity of evidence. 4.)What three types of photographs are taken at crime scenes? Describe each type. •The three types of photographs taken at the crime scene are overview photographs, intermediate photographs, and close up photographs. Overview photographs show the crime scene in wide angles. They are taken from different vantage points to show any entries and exits to the crime scene. Intermediate photographs are closer to the evidence, but they still show the surrounding area. Close up photographs may focus on an injury, a weapon, or a piece of evidence. 5.)Why is it important to record the crime scene?