Investigating crime scenes and observations

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

Which factor affects the amount of evidence transferred during a crime except

• intensity
• nature
• duration
• intensity, nature, duration

In a crime scene sketch, there should always be an arrow to show which way is

• South
• East
• West
• North

In a crime scene sketch, to show where a dead body or weapon is located, one should measure and draw the distance from the evidence

• 1 immovable landmark
• 2 immovable landmarks
• 3 immovable landmarks

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

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