module_03_journal.docx - MODULE 03 FORENSICS JOURNAL...

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M ODULE 03: F ORENSICS J OURNAL P HYSICAL E VIDENCE Objectives: After completing this module, you will be able to: Learn about the different types of evidence. Examine the difference between individual and class characteristics and what they mean for crime investigations. Discuss how physical and chemical properties help forensic scientists compare samples. Investigate glass fragments and soil as physical evidence and what they can tell forensic scientists about a crime. Discuss how impressions, like footprints and tire tracks, are collected and analyzed. General Key Terms Notes Ridge characteristics or minutiae Radial fractures Concentric fractures Reliability 3.02 Types of Evidence What are the four types of evidence in a criminal investigation? Briefly explain each type Physical evidence Physical evidence includes tangible objects such as weapons, trace evidence like hair, blood, or fibers, as well as fingerprints. These items are real, direct evidence of the crime and the individuals involved. Documentary evidence Documentary evidence is any type of written or recorded evidence, such as a recording of a telephone conversation or a video recording of a crime. The recording is typically authenticated by an expert to show
that it hasn’t been doctored or manipulated in any way. Demonstrative evidence Demonstrative evidence is evidence that is used to help recreate or illustrate a crime. For example, a model of the crime scene might be created to help illustrate the crime during a trial and show where items were at the crime scene. Testimony Testimony is the evidence given by witnesses during a trial. Testimony might come from someone who witnessed the crime or from someone who testifies as a character witness for the suspect. Key Questions Answer

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