Crime Scene Investigation Review

material that connects an individual or thing to a group that share similar characteristics

• trace evidence
• individual evidence
• class evidence

material that can be related to a single source

• individual evidence
• control evidence
• trace evidence

It is important to separate witnesses at a crime scene in order to 

• prevent contamination of evidence
• prevent them from talking and forming a collusion
• prevent them from leaving the scene

The ability to establish the exact whereabouts of an item of evidence and under whose control it was from its collection at the crime scene to its presentation in the courtroom and everywhere in between is called

• chain of command
• record of evidence
• chain of custody

the first responding police officer should keep a record of anyone who enters or leave the crime scene.  This is called

• chain of command
• evidence log
• security log

What are the four patterns to search for evidence

• spiral, round, linear, quadrant
• grid, round, linear, zone
• spiral, grid, quadrant, no pattern
• spiral, grid, linear, quadrant

when securing a crime scene the two most important factors are to

• scan the scene, separate the witnesses
• safety of individuals, separate the witnesses
• see the scene, preserving evidence
• safety of individual, preserving evidence

Evidence that (if true) proves an alleged fact, such as an eyewitness account of a crime

• circumstantial
• direct
• class evidence
• trace evidence

indirect evidence, evidence used to imply a fact but not prove it directly

• control sample evidence
• eyewitness testimony
• primary evidence
• circumstantial evidence

The first officer arriving at a crime scene, after providing or obtaining medical assistance for the injured and effecting an arrest of suspects (if possible), should immediately:

• photograph the scene.

• search for evidence.

• make a rough sketch of the scene.

• secure the scene.