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Forensics Unit 1
Chapters 1,2,3
| Term | Definition |
|---|---|
| Expert Witness | An individual whom the court determines to possess knowledge relevant to the trial that is not expected of the average layperson. |
| Locard's Exchange Principle | Whenever two objects come into contact with one another, they exchange materials between them. |
| Scientific Method | A process that uses strict guidelines to ensure careful and systematic collection, organization, and analysis of information. |
| Autopsy | The medical dissection and examination of a body in order to determine the cause of death. |
| Chain of Custody | A list of all people who came into possession of an item of evidence |
| Finished Sketch | A precise rendering of the crime scene usually drawn to scale. |
| Physical Evidence | Any object that can establish that a crime has been committed or can link a crime and its victim or its perpetrator. |
| Rough Sketch | A draft representation of all essential information and measurements at a crime scene. This sketch is drawn at the crime scene. |
| Standard/Reference Sample | Physical evidence whose origin is known, such as blood or hair from a suspect, that can be compared to crime-scene evidence. |
| Substrate Control | Uncontaminated surface material close to an area where physical evidence has been deposited. This sample is to be used to ensure that the surface on which a sample has been deposited does not interfere with laboratory tests. |
| Class Characteristics | Properties of evidence that can be associated only with a group and never with a single source. |
| Comparison | The process of ascertaining whether two or more objects have a common origin. |
| Identification | The process of determining a substance's physical or chemical identity. Drug analysis, species determination, and explosive residue analysis are typical examples of this undertaking in a forensic setting. |
| Individual Characteristics | Properties of evidence that can be attributed to a common source with an extremely high degree of certainty. |
| Reconstruction | The method used to support a likely sequence of events by observing and evaluating physical evidence and statements made by those involved with the incident. |
Created by:
Mr.Devine
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