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Terms in this set (40)
The mechanism in a firearm that withdraws a cartridge or fired case from a chamber is called:
Shell and cartridge casings can have individualistic marks made by the:
Firing pin, extractor and ejector mechanism, and breech block
Which shotgun has the smallest barrel diameter?
Which of the following firearms have lands and grooves in the barrel?
Handgun and rifle
IBIS and NIBIN are:
Automated screening tools for firearm evidence
A serial number can be restored by adding ___ to the surface of the metal.
Chemical etching acid
Discharged evidence bullets mist be carefully handled to avoid damage to the ____.
The firing pin strikes the ____.
The raised portions between the grooves in a rifled bore is called ____.
Te reason grooves are rifled into the bore of a gun is so that a ____ .
Bullet will be made to spin and have an accurate course
The cut or low-lying portions between the lands are called ______ .
Which of the following best describes trajectory and projectile?
Flight path of the bullet
Shot guns are an example of _____ .
Tools and tool marks are often found at burglary scenes. Proper evidence includes:
Taking a photograph and cast of the marks if necessary
Every morning object, including a bullet, has:
Horizontal & Vertical velocity
Which instrument is necessary for analyzing bullets and cartridges?
How are the bullets and cartridges collected at a crime scene?
Wrapped in soft material and placed by itself in a secure box
The barrel of a shotgun ____.
Is smooth without the grooves and lands found in a rifle
The rear part of the barrel is called the:
Which of the following is NOT expected to show evidential marks or impressions ?
Small lead pellets shot from a shotgun shell
What is the proper sample collection technique to see if a person has recently fired a weapon? ..*
All of the above ..*
The end of the barrel from which the projectile exits a firearm is called ____ .
Spiral grooves formed in the bore of a barrel to cause spin to the bullet when fired is _____.
A star-shaped bullet wound entrance indicates ____ .
Shooter was less than 1 inch away
Which is NOT a rifling method used the make the lands and grooves inside a barrel?
This indicates that the shooter was more than 3 feet away from the victim:
Dark ring around the bullet entrance and no other evidence
The caliber of a bullet is related to its :
The diameter of the bore of a rifled firearm is called ____ .
The flight of a projectile is called the _____ .
Semiautomatic pistols store cartridges in a:
Gunpowder residue can be defected by ___ .
The Greiss Test
Which of the following factors are least likely to be used by a technician examining tool marks?
brand name of the tool
Distinctive markings of shells and cartridges can be made by the: ^*^
All of the above ^*^
Which is NOT a class characteristic of a suspects sneakers?
What is the proper sample collection technique for an individual who recently fired a weapon? •+•
All of the above •+•
Which of the following are NOT class characteristics of tool marks ?
Wear and damage
A dark ring around the bullet hole and no gun powder residue deposited indicates the shooter was:
More than 3 feet away
Which of the following are NOT individual characteristics of shoe print impressions?
The end of the barrel from which the projectile exits a fire arm is called _____ . •*
The interior of a firearm barrel is called ____ .
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