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Crime Scene Basics
| Question | Answer |
|---|---|
| crime scene | Any physical location in which a crime has occurred or is suspected of having occurred. |
| primary crime scene | The originl 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 suspect's 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 | 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. |
| CSI unit | documents the crime scene in detail and collects any physical evidence. |
| district attorney | is often present to help determine if any search 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. they investigate the crime by following leads provided by witnesses and physical evidence. |
| Crime Scene Protocal: Step 1 | Interview |
| Crime Scene Protocal: Step 2 | Examine |
| Crime Scene Protocal: Step 3 | Document |
| Crime Scene Protocal: Step 4 | Process |
| Drug Chemistry | Determines the presence of controlled substances and the identification of marijuana |
| Trace Chemistry | Identification and comparison of materials from fires, explosions, paints, and glass. |
| Microscopy | Microscopic identification and comparison of evidence, such as hairs, fibers, woods, soils, building materials, insulation and other materials. |
| 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 and comparison of fingerprints or other hidden impressions from sources like feet, shoes, ears, lips or the tread on vehicle tires. |
| Ballistics (Firearms) | Study 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, such as a hammer used to break a door or a screwdriver used to pick a lock. |
| Questioned Documents | Examination of documents to compare handwriting, ink, paper, writing instruments, printers, and other characteristics that would help to identify its origin. |
Created by:
nmbartlett
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