forensic science

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review questions:
1. The NIBIN is the National Integrated Ballistic Identification Network 2. Rifling is the spiral grooves cut into the barrel of a gun in order to make the bullet spin. Two types of markings that this produces is grooves and lands. 3. Distance determination is the process of estimating the distance between where a shot is fired and its target. This is often done by looking at the patterns of powder residue and the shot pattern. 4. The Greiss Test is a test to the presence of nitrate?

5. When a bullet is retrieved, it is marked for identification purposes by usually being marked with the investigator's initials, often at the tip or base of the bullet. covering any striations or markings on the bullet, and labeling the sides of the bullet should be avoided.

Critical Thinking Questions
1. If i found a firearm at a crime scene, the steps i would take in order to transport the weapon to the lab are pick it up by the trigger guard or the checkered portion of the grip, unload the gun, and make a note about the position of the gun's safety and hammer. 2. I think it might be useful to know the distance between a gun fired and its target because the distance from which the gun was fired van help determine whether it was a homicide or suicide. 3. If I were in charge of retrieving bullets at a crime scene, the steps I would take to retrieve the bullet and take it to the crime lab would be marking my initials on the tip or base of the bullet, wrap it in tissue paper and placed in an envelope or pillbox, and be careful to preserve any trace evidence. 4. challenges in analyzing tool marks may include duplicating the marks left by tools through tests in the laboratory, and finding individual characteristics.
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