Forensics Unit 2

Chain of custody

A list of all persons who had possession of the evidence during the crime investigation.

Finished sketch

A precise representation of the scene.

Questioned sample

A sample of physical evidence that is collected at a crime scene.

Unknown sample

A sample of physical evidence that is collected at a crime scene.

Known sample

A sample that comes from a particular person or place.

Secondary crime scenes

Additional sites where criminal activity might have happened.

Physical evidence

Anything that can establish a crime has happened and anything that links the crime and the criminal.

Intermediate photographs

Are closer to the evidence, but they still show the area surrounding the evidence.

Trace evidence

Evidence that is small and often hard to find.

Close up photographs

Focus on an injury, a weapon, or a piece of evidence to show detail.

Fourth Amendment

Protects individuals from unreasonable searches and seizures.

Overview photographs

Show the crime scene in wide angles.

Rough sketches

Show the location of evidence and contain accurate accounts of the distances between them and the dimensions of the crime scene.

First responder

The first person that arrives at the scene.

Crime scene

The place where a crime occurred.