Question

forensic science study guideunit 1 & 2 - dont kick the scissors!know both sets of key terms. be able to define and apply to real situations.1. 7 steps of processing a crime scene (list these in correct order with brief descriptions.)2. three methods of documenting a crime scene•••3. crime scene sketch must include:4. four primary search patterns(draw these on your worksheet.)5. possible carriers of trace evidence from victim:

Explanation:

1. For crime scene processing steps, the standard ordered steps follow securing, documenting, searching, collecting, preserving, analyzing, and reporting.
2. The three main crime scene documentation methods are the standard practices for recording the scene.
3. Crime scene sketches require core identifying and spatial details for validity.
4. The four primary search patterns are the established systematic methods for evidence recovery.
5. Trace evidence carriers from a victim are common surfaces that retain transferable material.

Answer:

1. 7 Steps of Processing a Crime Scene:
2. Secure the scene: Restrict access to preserve evidence.
3. Document the scene: Record initial state via notes/photos.
4. Conduct a primary search: Locate obvious evidence.
5. Collect and preserve evidence: Package items to avoid contamination.
6. Conduct a secondary search: Verify no evidence is missed.
7. Analyze evidence: Test and examine collected materials.
8. Release the scene: Approve once processing is complete.

1. Three Methods of Documenting a Crime Scene:

• Photographic documentation (overall, medium, close-up photos)
• Written notes (detailed, chronological observations)
• Sketching (diagram of scene layout and evidence locations)

1. Crime Scene Sketch Must Include:

• Case file number and date/time of creation
• Location and orientation of the scene (e.g., north arrow)
• Measurements of the scene and evidence positions
• Labels for evidence, fixed objects, and entry/exit points
• Name and signature of the sketch creator

1. Four Primary Search Patterns:

• Strip/Line Search: Parallel lines sweep across the scene
• Grid Search: Overlapping perpendicular lines (double strip search)
• Spiral Search: Outward or inward spiral from a central point
• Zone Search: Divide scene into sections to search individually

1. Possible Carriers of Trace Evidence from Victim:

• Clothing (fibers, hair, debris caught in fabric)
• Hair and scalp (foreign hair, fibers, or chemicals)
• Fingernails (skin cells, debris from scratching an attacker)
• Skin (transferable substances like paint, drugs, or soil)
• Jewelry (trace material caught on settings or surfaces)