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Questions and Answers
Which principle states that whenever two objects come into contact with each other, there is an exchange of materials between them?
Which principle states that whenever two objects come into contact with each other, there is an exchange of materials between them?
- Forensic science principle
- Locard's exchange principle (correct)
- Crime laboratory growth principle
- Expert witness principle
Who is an individual whom the court determines to possess knowledge relevant to the trial that is not expected of the average layperson?
Who is an individual whom the court determines to possess knowledge relevant to the trial that is not expected of the average layperson?
- Physical science unit analyst
- Forensic scientist
- Expert witness (correct)
- Crime laboratory technician
What is the application of science to criminal and civil laws called?
What is the application of science to criminal and civil laws called?
- Crime laboratory growth
- Expert witness principle
- Forensic criminalistics (correct)
- Locard's exchange principle
What does a forensic scientist do?
What does a forensic scientist do?
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How many public crime laboratories are operating in the United States?
How many public crime laboratories are operating in the United States?
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Study Notes
Locard's Exchange Principle
- Every contact leaves a trace.
- Objects in contact will exchange materials.
- The principle is used to identify suspects and link them to crime scenes.
Expert Witness
- An individual with specialized knowledge or skills.
- May be called upon to testify in court.
- Assists the court in understanding complex scientific or technical issues.
Forensic Science
- The application of scientific methods to criminal and civil laws.
- Used to analyze evidence and provide objective information to legal proceedings.
Forensic Scientists
- Analyze physical evidence from crime scenes and other locations.
- Use scientific methods to identify and interpret evidence.
- Provide expert testimony in court.
Public Crime Laboratories in the US
- There are over 400 public crime laboratories operating in the United States.
- These laboratories provide forensic services to law enforcement agencies at all levels of government.
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