CSI terminology

2. The unwanted transfer of material from another source to a piece of physical evidence.
4. A fingerprint, palm print or footprint that is not readily visible under normal lighting.
5. Evidence that will lose its evidentiary value if not preserved and protected
6. Evidence that originated from a human, plant or animal.
8. The initial responding police officer(s) and other public safety official(s).
10. Evidence of unknown origin
14. Anybody who enters or exits an area will deposit or remove physical material from the scene.
17. Allows investigators to gain an understanding of the actions that took place at the scene
18. A special light to help investigators locate evidence
20. Powder containing fluorescent chemicals that is used to reveal latent prints.
21. Material of a known source taken from a person who had lawful access to the scene.

1. The unwanted transfer of material between two or more sources of physical evidence.
3. A test conducted at a crime scene that gives basic information regarding a questioned compound
7. Physical evidence that results from the transfer of materials
9. Material from a verifiable source, shows an association between an offender, crime scene, and/or victim.
11. Individuals who are involved in some aspect of the crime scene,
12. Material of a known source that presumably was uncontaminated during the commission of the crime.
13. Any evidence that can link a person or an item to the scene of the crime.
15. Objects that have retained the characteristics of other objects that have been pressed against them.
16. The process used to maintain and document the history of the evidence.
19. Possessing the potential to provide details that are valuable to an investigation.