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21 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Legal and scientific obligations.
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Identify each piece of evidence.
Describe where it was found. Prove continuity. Describe any changes to the evidence. |
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Changes that may occur to evidence over time.
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Bacterial contamination.
Seepage. Evaporation. Spillage. Accidental scratching. |
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3 types of evidence.
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Testimonial-what you did.
Documentary-photographs, etc. Physical evidence-exhibits |
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What can evidence prove?
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That a crime occurred or establish key elements.
Place a suspect in contact with a victim or scene. Identify a suspect. Clear the innocent. Corroborate testimony. Assist with admissions. Expected in court cases. |
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Crime scene responsibilities.
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Preserving and protecting the scene and evidence.
Searching. Recording and collecting evidence. |
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Initial response.
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Post guards, install barricades, cover perishable evidence, secure doors and windows.
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Importance of notes.
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Facilitates report.
Enhances credibility. Refreshes memory. |
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Areas of special attention at a crime scene.
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Point of entry.
Path leading to point of entry. Point of exit. Path leading from point of exit. Attempted entry points. Sequence of events within scene. |
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When to use video.
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Major crime scenes, re-enactments, aerial, interviews, surveillance, riots.
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4 types of search.
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Strip/line, grid, zone and spiral.
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Spiral search.
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Good for limited manpower. Start at center and use a stick and rope to expand area.
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Zone search.
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Concentrates in a specific area. Groups can search separate areas within zone.
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Grid search.
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Similar to zone, but focuses on a smaller area for smaller objects.
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Strip/line search.
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Good for elongated areas. Work from one known point to another.
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Locard's exchange principle.
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When any object or person comes into contact with another object or person, a cross transfer of physical evidence takes place.
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What is a control sample?
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A known substance used for comparison purposes.
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Why/when is exhibit numbering crucial?
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Linking photographs.
Multiple scenes. |
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Processing a body.
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Use FLS.
Bag hands and feet. Coroner at scene. Clean sheet to wrap victim. |
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Vehicle-sources of evidence.
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Interior, exterior, surrounding area, tire tracks, transfer material.
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Photography of bite marks.
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Change over time, multiple photos needed.
Use scale at right angle to each arch of teeth. |
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What is photogrammetry?
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3D coordinates on an object are mathematically determined by measurements made in 2 or more photographic images taken from 2 different positions.
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