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Intro to Forensics
Our Introductory Unit
Question | Answer |
---|---|
FBI | The Federal Bureau of Investigation maintains the largest crime lab in the world. |
DEA | Drug Enforcement Administrative Laboratories (Department of Justice), analysis of drugs seized in violation of federal laws. |
ATF | Bureau of Alcohol, Tobacco, and Firearms (Department of Treasure), analyzes alcoholiv beverages, documents related to tax law enforcement, examines weapons, explosive devices, and related evidence. |
US Postal Inspection Service | Criminal investigation related to the postal service. |
State | Maintains a crime laboratory to service state and local law enforcement agencies that do not have ready acess to a laboratory. |
Local | Provides services to county and municipal agencies. |
Crime scene | Any physical location in which a crime has occured or is suspected of having occured. |
Primary crime scene | The original location of a crime or accident. |
Secondary crime scene | An alternate location where additional evidence may be found. |
Suspect | Person thought to be capable of committing a crime. |
Accomplice | Person associated with someone suspected of committing a crime. |
Alibi | Statement of where a suspect was at the time of a crime. |
Testimonial evidence | Includes oral or written statements given to police as well as court testimony by people who witnessed an event. |
Physical evidence | Refers to any material items that would be present at the crime scene, on the victims, or found in a suspects possession. |
Trace evidence | Refers to physical evidence that is found in small but measurable amounts such as strands of hair, fibers, or skin cells. |
Police officers | They are responsible for securing the scene, so no evidence is destroyed and detaining persons of interest in the crime. Typically first ones to arrive at crime scene. |
CSI unit | They document the crime scene in detail and collects any physical evidence. |
District attorney | Is often present to help determine if any serch warrants are required to proceed and obtains those warrants from a judge. |
Medical examiner | (If a homicide) may or may not be present to determine a preliminary cause of death. |
Specialists | Forensic entomologists, anthropologists, or psychologists, may be called in if the evidence requires expert analysis. |
Detectives | Interview witnesses and consult with the CSI unit. |
Manner of Death: Natural | People die of natural causes (ex: heart attacks, strokes) Autopsises are performed only when death occurs suddenly or unexpectedly. |
Manner of Death: Accidental | Coroners start an investigation if the feel the accident could have been avoided. |
Manner of Death: Suicide | Helping someone commit suicide is against the law and will lead to manslaughter charges. |
Manner of Death: Homicide | Means "killing a human", could lead to one of two charges: murder or manslaughter. |
Drug Chemistry | Determines the presence of controlled substances and the identification of marijuana. |
Trace Chemistry | Identification and comparison of materials from fires, explosisons, paints, and glass. |
Microscopy | microscopic identification and comparison of evidence (ex: hairs, fibers, woods, soils, building materials, insulation, etc.) |
Biology/DNA | Analysis of body fluids and dried stains such as blood, semen, and saliva. |
Toxicology | Tests body fluids and tissues to determine the presence of drugs and poisons. |
Latent Prints | Identification an comparison of fingerprints or other hidden impressions from sources like feet, shoes, ears, lips, or the tread of vehicle tires. |
Ballistics (Firearms) | Stufy of bullets and ammunition through the comparison of fired bullets, cartridges, guns, and gunpowder patterns on people and objects. |
Toolmarks | Examines marks left by tools on objects at a crime scene or on a victim. |
Questioned Documents | Examination of documents to compare handwriting, ink, paper, writing instruments, printers, and other characteristics that would help identify its origin. |
Forensic Science | Applying science to law |
Criminology | Study of crime |