Forensic Photographer Evidence Preservation & Analysis

Question 1

What is the first step in preserving physical evidence at a crime scene?

Accepted Answer

Secure and restrict access to the crime scene

Answer

Immediately collect all visible evidence

Answer

Allow multiple officers to walk through the scene

Answer

Start photographing before securing the area

Question 2

Which type of evidence is most susceptible to degradation over time?

Accepted Answer

Biological evidence

Answer

Glass fragments

Answer

Metal tools

Answer

Plastic bags

Question 3

Why is chain of custody documentation important in evidence handling?

Accepted Answer

To ensure evidence is not altered or compromised

Answer

To keep track of missing evidence

Answer

To allow multiple personnel to handle evidence freely

Answer

To document only biological evidence

Question 4

What is the best method for preserving blood evidence on fabric?

Accepted Answer

Air dry and store in a paper bag

Answer

Seal the fabric in an airtight plastic bag

Answer

Freeze the fabric immediately

Answer

Wash the fabric to remove excess blood

Question 5

Which forensic technique is used to analyze gunshot residue (GSR)?

Accepted Answer

Scanning Electron Microscopy (SEM)

Answer

Infrared Spectroscopy

Answer

Gas Chromatography

Answer

Polygraph Testing

Question 6

Why should evidence be stored in a climate-controlled environment?

Accepted Answer

To prevent DNA contamination

Answer

To make storage more convenient

Answer

To reduce handling of evidence

Answer

To increase storage space