Introduction to Forensic Science Essay

615 WordsJan 6, 20143 Pages
Module Five: Text Questions Review Questions 1. What is the NIBIN? NIBIN is the National Integrated Ballistic Identification Network that was created by the FBI and the ATF in 1999. 2. What is rifling? What two types of markings does this produce? Rifling is when each gun is given spiral grooves by the manufacturer. The spiral grooves are cut into the barrel of a gun in order to make a bullet spin as it is fired. Rifling produces grooves and lands. 3. What is a distance determination? How is this done? A 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. What is the Greiss Test? The…show more content…
Then the bullets can be placed into a marked container for identification purposes. Then to transport the bullet to the crime laboratory, I’d wrap the bullet in tissue paper and placed in an envelope or pillbox. I would have to be careful with the handling and packaging of the bullet, because I would have to be careful to preserve any trace evidence that might be present on the bullet. 4. What are some of the challenges in analyzing tool marks? Some of the challenges in analyzing tool marks is it is difficult to duplicate the mark left by tools through tests in the laboratory and tool marks may not always give individual characteristics. 5. What is the Doppler Effect? How can the Doppler Effect be useful for a forensic investigation involving a shooting? It is important for a forensic scientist to determine the distance from a gun to a shooter because in some cases a defendant accused of murder may say that the shooting happened in self-defense. Figuring out the distance between the two individuals may give an indication of whether the defendant is telling the truth or not. Similarly, knowing an approximate distance of a shot can help forensic scientists determine if a death was a suicide or a homicide made to look like a
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