Forensic Science Semester 1 Final Exam Study Guide *Questions are randomly selected from a test bank of 100 possible questions, therefore every exam is different and not all the below information is covered in a single randomly generated exam. Module 5 · Properly collecting and transporting firearms from a crime scene (5.02) The gun can be picked up by the textured surface on the grips without fear of placing unnecessary fingerprints on the weapon. Before picking up the gun, make sure that the gun barrel is not pointed at anyone. Keep notes on the condition of the weapon as found and stops taken to render it as safe as possible without damaging potential evidence. The firearm can then be processed for prints and finally rendered completely safe. FIREARMS MUST BE RENDERED SAFE BEFORE SUBMISSION TO THE CRIME LAB. The firearm should be packaged in an envelope or paper bag separately from the ammunition and/or magazine. · Properly collecting, marking and transporting bullets from a crime scene (5.02) Casings and/or bullets found at the crime scene should be packaged separately and placed in paper envelopes or small cardboard pillboxes. Identifying the exact gun that fired a bullet (5.02) Sticks carefully inserted in bullet holes can indicate direction of the bullet, and, if many holes are found in a scene, these sticks can help triangulate: where the shooter was standing; how tall he (or she) might have been; and many more
details. Bullets that ricochet will collect trace evidence from where they bounce, and add further detail for the investigator. · Rifling/grooves and lands (5.02) consists of helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy. · The Integrated Ballistic Identification System (5.02) The Integrated Ballistics Identification System, or IBIS, is the brand of the Automated firearms identification system manufactured by Forensic Technology WAI, Inc., of Montreal, Canada.
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- Fall '14
- DNA, Crime scene, Firearm, Explosive material, Rifling