Crime Scene Basics
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| crime scene | Any physical location in which a crime has occurred or is suspected of having occurred.
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| primary crime scene | The originl location of a crime or accident.
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| secondary crime scene | An alternate location where additional evidence may be found.
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| suspect | Person thought to be capable of committing a crime.
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| accomplice | Person associated with someone suspected of committing a crime.
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| alibi | Statement of where a suspect was at the time of a crime.
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| testimonial evidence | includes oral or written statements given to police as well as court testimony by people who witnessed an event
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| physical evidence | refers to any material items that would be present at the crime scene, on the victims, or found in a suspect's possession
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| trace evidence | refers to physical evidence that is found in small but measurable amounts, such as strands of hair, fibers, or skin cells
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| police officers | Typically the first to arrive at a crime scene. They are responisible for securing the scene so no evidence is destroyed and detaining persons of interest in the crime.
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| CSI unit | documents the crime scene in detail and collects any physical evidence.
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| district attorney | is often present to help determine if any search warrants are required to proceed and obtains those warrants from a judge
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| medical examiner | (if a homicide) may or may not be present to determine a preliminary cause of death
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| specialists | (forensic entomologists, anthropologists, or psychologists) may be called in if the evidence requires expert analysis
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| detectives | Interview witnesses and consult with the CSI unit. they investigate the crime by following leads provided by witnesses and physical evidence.
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| Crime Scene Protocal: Step 1 | Interview
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| Crime Scene Protocal: Step 2 | Examine
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| Crime Scene Protocal: Step 3 | Document
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| Crime Scene Protocal: Step 4 | Process
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| Drug Chemistry | Determines the presence of controlled substances and the identification of marijuana
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| Trace Chemistry | Identification and comparison of materials from fires, explosions, paints, and glass.
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| Microscopy | Microscopic identification and comparison of evidence, such as hairs, fibers, woods, soils, building materials, insulation and other materials.
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| Biology/DNA | Analysis of body fluids and dried stains such as blood, semen, and saliva.
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| Toxicology | Tests body fluids and tissues to determine the presence of drugs and poisons.
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| Latent Prints | Identification and comparison of fingerprints or other hidden impressions from sources like feet, shoes, ears, lips or the tread on vehicle tires.
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| Ballistics (Firearms) | Study of bullets and ammunition through the comparison of fired bullets, cartridges, guns, and gunpowder patterns on people and objects.
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| Toolmarks | Examines marks left by tools on objects at a crime scene or on a victim, such as a hammer used to break a door or a screwdriver used to pick a lock.
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| Questioned Documents | Examination of documents to compare handwriting, ink, paper, writing instruments, printers, and other characteristics that would help to identify its origin.
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Created by:
nmbartlett
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