Crime Scene Investigation Lecture Notes

Flashcards for exam review

Crime Scene Reconstruction

What is the major purpose of physical evidence?

A paper brown bag tied with tape

What should be used to protect gunshot residue on hands if a GSR test cannot be completed?

The heart and any major blood vessel

Where should blood samples be taken from a deceased person?

Twists, bores, and grooves

What are class characteristics of bullets identified by?

In the same water

How should weapons found in water be stored?

Identify or exonerate a suspect

What can physical evidence collected at a crime scene of a sexual assault be used to do?

With and without a flash

What should close up photos of each wound on a homicide victim be taken with?

To the crime scene investigator

What is the primary focus of proper documentation of bloodstain evidence?

To recognize physical evidence

What is the first step in the reconstruction of a crime scene after it's been secured?

By taking the whole garment

How should blood stains be collected from clothing?

Consent

What is required to take blood from a DUI suspect?

A warrant from the municipal court judge

If consent is not given, what is needed to take blood from DUI suspects?

Cheek and hand

Where might gunshot residue be found on a suspected shooter after using a rifle or shotgun?

Consent and Misidentification

What are two principle types of common defenses used by a suspect in a sexual assault case?

20 minutes

What is the minimum waiting time for police officers arresting a suspect for DUI before administering an alcohol test?

Lands and Grooves

What does the rifling of a projectile within the firearm barrel consist of?

Possible transfer of evidence between the suspect, the victim, and the scene

What does the linkage triangle illustrate?

Footwear, Tire Thread, Bite Marks, and Tool Marks

What are common examples of impressions?

Prints from people 14 years of age or older

What do fingerprint examiners check on the NCIC.

Plan a systematic method of their searches

What is the first thing a crime scene investigator should do?