Crime Scene Investigation Techniques

The video tutorial introduces crime scene investigation, emphasizing observation, interpretation, and reporting skills. It covers the seven S's of crime scene investigation, including securing the scene, separating witnesses, and searching for evidence. The tutorial explains evidence collection methods, highlighting the importance of avoiding contamination and maintaining a chain of custody. It distinguishes between circumstantial and direct evidence, providing examples of each. The video concludes with a mention of unsolved cases, encouraging further investigation and analysis.

What is the first step a forensic investigator should take at a crime scene?

• Observe, interpret, and report observations

• Interview witnesses

• Start collecting evidence

• Sketch the scene

What is the purpose of securing the scene in a crime investigation?

• To allow media access

• To ensure the safety of the public

• To preserve physical evidence

• To start the investigation immediately

Why is it important to separate witnesses at a crime scene?

• To make them more comfortable

• To prevent them from leaving

• To ensure they do not influence each other's accounts

• To allow them to discuss the event together

What is the significance of taking pictures with and without a ruler at a crime scene?

• To create a photo album

• To ensure evidence is not tampered with

• To provide scale and context for the evidence

• To make the scene look professional

Which pattern is NOT used for searching evidence at a crime scene?

• Circular

• Linear

• Spiral

• Grid

What is crucial when collecting evidence to avoid contamination?

• Using gloves and proper tools

• Collecting evidence quickly

• Allowing multiple people to handle it

• Storing it in any available container

What is an example of circumstantial evidence?

• A confession

• A witness testimony

• Hair found at the scene

• A video recording of the crime

What is the difference between direct and circumstantial evidence?

• Direct evidence is always more reliable

• Circumstantial evidence requires inference

• Direct evidence is not admissible in court

• Circumstantial evidence is always physical

What should be attached to an evidence bag to ensure proper documentation?

• A photograph of the evidence

• An evidence log and chain of custody

• A map of the crime scene

• A list of potential suspects

What happens to unsolved cases in the lab?

• They are discarded

• They are filed as unsolved

• They are solved immediately

• They are ignored