Forensic Science Physical Evidence

What is a Crime Scene Investigator?

• A person trained to record, collect and test evidence found at a crime scene.

• A person trained to help the FBI

• A person trained to record, collect and make false evidence available.

• An agent trained to ride unicorns.

What is evidence?

• Objects like rubber unicorns left at a dance party

• An excuse for a crime.

• Things left at a crime scene on purpose or accidentally

• Things left behind during a police training drill

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A forensic investigator is only interested in...

• proving guilt or innocence

• solving the crime

• testifying in court

• collecting/examining evidence

Forensic investigators are responsible for all of these except:

• confirming a suspect's guilt

• systematic observation and documentation

• report and communicate observations

• collect and examine evidence

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Dirt, pollen, hair, skin cells, and carpet fibers are all ______.

• DNA

• forensic science

• tool marks

• trace evidence

What does the Locard Exchange Principle imply?

• fingerprints can help identify people

• wherever there is contact, something is left behind (evidence)

• for every action there is an equal and opposite reaction

• there is always some type of DNA left at a crime scene

Evidence that comes directly from a person or animal (body parts, fluids, hair, skin, blood, etc). is known as _______________ evidence.

• Direct

• Circumstantial

• Physical

• Biological

A fingerprint could be an example of

• common evidence

• biological evidence

• individual evidence

• class evidence

What is the primary role of physical evidence in forensic science?

• To establish a connection between a suspect and a crime scene

• To entertain the jury during a trial

• To confuse the defense attorney

• To replace witness testimony

Which of the following is considered physical evidence?

• Eyewitness testimony

• A suspect's confession

• A bloodstain on a carpet

• A lawyer's argument