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CSI Final Exam Questions and Answers 100% Solved | Graded A+

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CSI Final Exam Questions and Answers 100% Solved | Graded A+ Impression Evidence - Objects or materials which have retained the characteristics of other objects or materials which have been impressed against them. Basic casting and lifting techniques for impression evidence (4) - o Plaster an...

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  • October 11, 2024
  • 27
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CSI
  • CSI
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JOSHCLAY
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CSI Final Exam Questions and Answers

100% Solved | Graded A+


Impression Evidence - ✔✔Objects or materials which have retained the

characteristics of other objects or materials which have been impressed

against them.

Basic casting and lifting techniques for impression evidence (4) - ✔✔o

Plaster and Dental Stone - 3-dimensional impressions.

o Gelatin and Other Adhesive Lifters - 2 dimensional impressions.

o Rubber Casting - tool marks.

o Electrostatic Lifting Devices (ESLD) - dust prints.

what is often destroyed by first responders - ✔✔Footwear and tire tread

impression evidence

Information provided by footwear impressions - ✔✔• Type: Athletic shoe,

loafer, pump, etc.

• Make: Nike, Reebok, Converse, etc....

• Description

, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

• Approximate or Precise Size

• The location of the footwear impressions can help reconstruct the crime

The presence, characteristics and conditions of the impressions can assist

in determining (4) - ✔✔1. Number of suspects involved

2. Their path through and away from the crime scene

3. Their involvement in the crime

4. Events that occurred during the crime.

Two Dimensional Impressions - ✔✔- An impression having only the two

dimensions of width and length.

- Usually in indoor crime scene and many times found on the floor leading

from the point of entry.

- whole footwear tread does not have to be present to establish an

identification.

- Always collect the entire two-dimensional impression.

Three Dimensional Impressions - ✔✔- defined by three separate

measurements: width, length and depth.

- can be found indoors in flour, sugar, dust, fire extinguisher propellant,

etc., but are more often encountered in the outdoor crime scene in sand,

mud, clay or snow.

, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

General Crime Scene Photograph Quality - ✔✔General crime scene

photographs (overall, midrange, and closeup) should be taken to relate the

impressions to the crime scene.

Examination-Quality Photographs - ✔✔should then be taken to obtain

maximum detail for forensic examination.

• Shows impression as it was at the crime scene with any rocks, sticks or

other debris which may be in, around or part of the impression

• Shows the condition and detail of the impression

• In some instances, such as with impressions in extremely coarse

surfaces, photographs may represent the impression better than a cast

• Backs up casting

Bodziak's Guide to Examination Quality Photography- The Camera -

✔✔Use a professional DSLR (Digital Single-Lens Reflex camera set at

its highest resolution.

Bodziak's Guide to Examination Quality Photography- Prepare Impression -

✔✔- Place an L-shaped or long straight flat ruler alongside the length of

the impression.

- If its a 3D impression, carefully position the ruler on the same plane (level)

as the bottom of the impression.

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