Forensics
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each of the black spaces below before clicking
on it to display the answer.
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| physical evidence | any object that can establish that a crime has been committed or can link a crime and its victim or its perpetrator
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| keep others out and prevent alteration and destruction to crime scene | secure the scene in order to
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| obtain medical assistance, if necessary; arrest the perpetrator; preserve and protect the area; exclude all unauthorized personnel from the scene | responsibilities of the first responder
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| secure the scene | first step in processing a crime scene
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| sketching, photographs, and notetaking | three methods for recording a crime scene
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| note that the objects were moved but do not reintroduce them to the crime scene | if objects have been moved or removed from a crime scene, the investigator should
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| take overview scenes of entire area and adjacent surroundings | what areas should be photographed during a crime scene investigation?
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| rough sketch | sketch made at the crime scene, contains an accurate depiction of the dimensions of the scene and shows the location of all objects having a bearing on the case
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| finished sketch | a precise rendering drawn to scale (CAD)
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| computer aided drafting | CAD
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| detailed description of physical evidence including time of discovery, who discovered it, how it was discovered, who package the evidence, and the disposition of the evidence | what info must be included in written notes made at the crime scene?
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| size, location, actions of suspect/victims at the scene | three factors that influence how an investigator conducts a crime scene
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| chain of custody | record of who has handled the evidence
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| standard/reference sample | physical evidence of known origin used for comparison
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| substrate control | uncontaminated surface material close to an area where physical evidence has been disposited
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| druggist fold | method of folding paper to keep fine particles or powders secure
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| prevent damage and cross-contamination | why should evidence be put in separate containers?
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| point of reference to document size | why should a ruler be included in a photo?
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| body of the crime | corpus delicti
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| mode of operation | modus operandi
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| linkage theory | the case can be solved if investigators can establish links between physical evidence and the victim, crime scene, and/or suspect
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| transfer theory | based on Locard's Theory of Exchange, whenever you leave a location, you leave something behind
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| strip or line search | useful in large, outdoor areas
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| grid method | more thorough version of line search
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| spiral method | dangerous; evidence may be destroyed if investigators initially walk to the center to begin search
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| zone search | useful in indoor searches
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| wheel method | used in special situations, not in large areas
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| link method | used in conjunction with wheel method
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| all evidence found, measurements from 2 fixed points, orientation and direction, labels for representing evidence | what should be included in the sketch?
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| hair, fiber, clothing, blood sample, bullets, hand swabs from shooting victims, fingernail scrapings, oral, anal, and vaginal swabs, organ samples | what should be collected from the body?
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| bloodstained/wet materials | what should not be placed in air-tight containers?
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| GLASS OR METAL OBJECTS | what should be put in a rigid container?
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| porous container | body fluids should be stored in
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| druggist fold | trace evidence
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| nonporous unbreakable container | arson evidence
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| buccal swab | swab from inner portion of cheek of crime scene participants
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| consent is given, evidence is in immediate danger of loss, emergency circumstances exist, someone being lawfully arrested | ways to issue a warrantless search
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