Observation, CSI & Evidence Collection

The idea that with any contact between two items there will be transfer is known as _____

• physical evdience

• Locard's exchange principle

• Forensic exchange principle

• the law of forensics

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

• control sample evidence

• eyewitness testimony

• primary evidence

• circumstantial evidence

Which of the following is NOT an example of direct evidence?

• surveillance video

• compatible blood type

• a confession

• eyewitness testimony

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

• photograph the scene.

• search for evidence.

• make a rough sketch of the scene.

• secure the scene.

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

All evidence gathered at a crime scene must be

• labeled and documented

• analyzed in a scientific manner

• handled carefully so not to contaminate the specimen

• all of the above

Processing a crime scene involves:

• only collecting evidence and taking pictures

• Collecting evidence, sketching the scene, taking pictures, interviewing suspects, and examining the scene

• only examining the scene and interviewing witnesses

• only sketching the scene and taking pictures

Small but measurable amounts of physical or biological material found at a crime scene

• individual evidence

• class evidence

• direct evidence

• trace evidence

Investigators collect evidence

• without making judgements

• on its potential importance

• in alphabetical order

• only with permission from detectives

Perception is

• using your 5 senses

• always correct

• an interpretation of an observation

• not useful

Tags

NGSS.MS-LS1-8