Forensic Science Unit 1 Review

What is forensic science?

• When scientists improve plants by using DNA
• The use of science in growing trees
• Any legal action that requires a police investigation
• When science is used for the purposes of the law

The main job of a crime scene investigator is to .....

• interview witnesses
• conduct laboratory tests including electrophoresis
• determine the manner of death of a victim
• Objectively identify, collect and document evidence 

Forensic scientists...

• analyze evidence

• testify in court

• both analyze and testify

• none

Which of the following is a benefit of the "CSI effect"?

• Juries are calling for more forensic evidence

• Juries use scientific words that have no bearings on trial

• People are found innocent due to lack of forensic evidence

• More people entering the field

T of F: Locard's Exchange Principle states that objects in motion will stay in motion

• True

• False

Typically they are the first to arrive at a crime scene and they secure the scene

• detectives

• specialists

• district attorney

• police officers

Evidence can provide

• proof that a crime has been committed
• establish key elements of a crime
• exonerate the innocent
• all of the above

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.

Which of the following is a correct physical evidence collection procedure?

• All items collected from the same grid area should be packaged together.

• The victim's clothing should be obtained at the crime scene and vacuumed to obtain trace evidence.

• Bloodstained garments should be packaged separately in paper bags.

• Every item collected should be secured individually in a plastic bag to prevent contamination.

Define the "Locard's Principle."

• the scientific examination of evidence in a criminal investigation
• states that criminals always take a trace of something with them or leave a trace of something behind at the scene of the crime
• a type of evidence
• the person who runs the Locard School