Forensic Science: Firearms and tool marks – Flashcards
Unlock all answers in this set
Unlock answersquestion
What uses chemicals to develop gunpowder residue patterns, particularly around bullet holes?
answer
Greiss Test
question
What can be used to recover serial numbers?
answer
An etching reagent
question
If a gun is fired from 1 inch or less from the target, the lead pattern will be in which shape?
answer
A circle
question
It is impossible to obscure serial numbers.
answer
False
question
Even when bullets of the same ammunition are fired from the same gun, the bullets are generally not a one hundred percent match for each other.
answer
True
question
Where can a bullet be marked with the investigator's initials?
answer
On the base
question
A tool suspected of being used at a crime scene should be tried out in a tool mark to see if it fits
answer
False
question
How long does gunpowder residue remain on a shooter's hands?
answer
A few hours
question
When a bullet is fired, gunpowder only travels back toward the shooter.
answer
False
question
Which of the following is generally a good way to pick up a firearm to preserve evidence?
answer
By the trigger guard
question
It is not essential to collect the clothing of a shooting victim since it is unlikely to have any evidence present.
answer
False
question
Any wet clothing from a victim should be air dried before it is packaged.
answer
True
question
The diameter of the gun barrel is known as the caliber.
answer
True
question
IBIS was created by the Bureau of Alcohol, Tobacco, Firearms and Explosives in the United States.
answer
True
question
Spiral grooves cut into the barrel of a gun in order to make a bullet spin as it is fired are known as what?
answer
Rifling
