Questions and Answers
What is the term for the ability to establish the exact whereabouts of an item of evidence?
chain of custody
What type of evidence proves an alleged fact, such as an eyewitness account?
direct
Which factor affects the amount of evidence transferred during a crime except?
What is material that can be related to a single source called?
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A DNA sample is classified as what type of evidence?
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Blood-stained materials should be stored in what type of container?
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Why is it important to separate witnesses at a crime scene?
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"With contact between two items, there will be an exchange." This is known as _____
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What do crime scene sketches provide that photographs cannot?
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How would you correctly describe the evidence item: Shoe print?
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Which of the following is a team member on a crime scene team?
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Circumstantial evidence tells exactly who is the perpetrator.
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Rough sketches are typically drawn to scale.
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What is used so a reader can understand the symbols used in the sketch?
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Which of the following is true regarding photographs at a crime scene?
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What is material that connects an individual or thing to a group that share similar characteristics?
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Which type of evidence is considered direct evidence?
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In a crime scene sketch, there should always be an arrow to show which way is _____
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What are the four patterns used to search for evidence?
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What should the first officer do upon arriving at a crime scene after providing medical assistance?
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Study Notes
Chain of Custody
- Establishes the exact location and control of evidence from collection to courtroom presentation.
Types of Evidence
- Direct Evidence: Directly proves an alleged fact, e.g., eyewitness accounts.
- Circumstantial Evidence: Indirect evidence that suggests a fact – DNA samples classified as circumstantial.
Evidence Transfer Factors
- Amount of evidence transferred during a crime affected by intensity, nature, and duration.
Evidence Classification
- Individual Evidence: Linked to a single source (e.g., specific fingerprints).
- Class Evidence: Connects an individual or item to a group with shared characteristics (e.g., blood type).
Blood Evidence Storage
- Blood-stained materials should be stored in paper bags to prevent contamination.
Witness Management
- Witnesses should be separated at a crime scene to prevent collusion and influence on testimonies.
Locard's Exchange Principle
- With contact between two items, there will be an exchange of evidence.
Crime Scene Sketches
- Provide unique details like distances and dimensions not captured in photographs or videos.
- Rough sketches are typically not drawn to scale.
Evidence Description
- Shoe prints are classified as circumstantial evidence.
Crime Scene Team Roles
- Crime scene team may include the first police officer, medical examiner, and investigators.
Circumstantial Evidence Misconceptions
- Circumstantial evidence does not identify the perpetrator directly.
Sketch Legends
- A legend is crucial for understanding symbols used in crime scene sketches.
Photographing the Crime Scene
- Include close-up photos of injuries and weapons, images of the scene after body removal, and overall positioning relative to the scene.
Searching for Evidence
- Evidence search patterns include spiral, grid, linear, and quadrant methods.
Securing the Crime Scene
- First officer at the scene should secure the area after addressing medical needs and suspects' arrest.
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Description
Test your knowledge on evidence classification and the chain of custody in forensic science. This quiz covers key concepts and definitions essential for understanding how evidence is handled in legal proceedings. Perfect for students and professionals in criminal justice or forensic studies.
