Forensic ballistics analysis of projectiles
| Order ID | 53563633773 |
| Type | Essay |
| Writer Level | Masters |
| Style | APA |
| Sources/References | 4 |
| Perfect Number of Pages to Order | 5-10 Pages |
Description/Paper Instructions
Forensic ballistics analysis of projectiles
Forensic ballistics, also known as firearms examination or the analysis of projectiles, is a branch of forensic science that focuses on the examination, interpretation, and comparison of firearms, ammunition, and the marks they leave on bullets, cartridge cases, and other ballistic evidence. This field plays a crucial role in criminal investigations, providing valuable information to law enforcement agencies and the legal system.
The primary objective of forensic ballistics is to link firearms evidence to a specific firearm, ammunition, or shooter. This is accomplished through the analysis of various types of evidence, including bullets, cartridge cases, gunshot residue, and firearm components. By examining these items, forensic ballistics experts can draw conclusions about the type of firearm used, its condition, and even potentially determine the distance from which a shot was fired.
One of the key components of forensic ballistics is the examination of bullets recovered from crime scenes or bodies. This process involves detailed visual inspection and comparison of markings on the bullet’s surface, known as striations. When a bullet is fired through the barrel of a firearm, the unique imperfections and characteristics of the barrel leave distinct marks on the bullet. These striations act as a fingerprint, allowing experts to potentially match a recovered bullet to a specific firearm.
Similarly, cartridge cases can provide valuable information. When a firearm is discharged, the firing pin strikes the primer of the cartridge, igniting the propellant and forcing the bullet out of the barrel. The cartridge case, which holds the bullet and primer, is then ejected from the firearm. The marks left on the cartridge case during this process can provide important insights into the firearm that was used. Forensic ballistics experts examine these marks, including firing pin impressions and breech face marks, to help identify the firearm or at least narrow down the range of possible firearms that could have been used.
Gunshot residue (GSR) analysis is another important aspect of forensic ballistics. When a firearm is discharged, tiny particles from the primer, propellant, and other components are expelled from the barrel. These particles can be deposited on the shooter’s hands, clothing, and nearby surfaces. By collecting samples and analyzing them in the laboratory, forensic experts can determine whether a person has recently discharged a firearm. However, GSR analysis alone cannot link a specific firearm to the crime scene but can provide supporting evidence.
To establish a link between a specific firearm and a bullet or cartridge case, forensic ballistics experts often employ a comparison microscope. This specialized instrument allows side-by-side examination of two pieces of evidence, such as a test-fired bullet and a recovered bullet, enabling the expert to identify matching characteristics or individualizing features. The comparison microscope greatly enhances the ability to make accurate and reliable firearm identifications.
It is important to note that forensic ballistics does have limitations. The degree of certainty in firearm identification depends on several factors, including the quality and quantity of the evidence, the condition of the firearm, and the expertise of the examiner. Furthermore, it is not always possible to link a specific firearm to a bullet or cartridge case due to various factors, such as limited striation markings or the absence of a known firearm for comparison.
In conclusion, forensic ballistics is a critical discipline within forensic science that focuses on the examination and analysis of projectiles. By studying the unique markings on bullets, cartridge cases, and other ballistic evidence, forensic experts can provide valuable information to law enforcement agencies and the legal system. While forensic ballistics has its limitations, it continues to be an invaluable tool in criminal investigations, aiding in the identification of firearms, ammunition, and potential shooters, and contributing to the pursuit of justice.
Forensic ballistics analysis of projectiles
RUBRIC | QUALITY OF RESPONSE | NO RESPONSE | POOR / UNSATISFACTORY | SATISFACTORY | GOOD | EXCELLENT | | Content (worth a maximum of 50% of the total points) | Zero points: Student failed to submit the final paper. | 20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. | 30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. | 40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. | 50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. | | Use of Sources (worth a maximum of 20% of the total points). | Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. | 5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. | 10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. | 15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. | 20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. | | Grammar (worth maximum of 20% of total points) | Zero points: Student failed to submit the final paper. | 5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors | 10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors | 15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. | 20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. | | Structure of the Paper (worth 10% of total points) | Zero points: Student failed to submit the final paper. | 3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. | 5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper | 7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. | 10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper. |
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