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forensics ch. 17
vocabulary ch. 17
| Term | Definition |
|---|---|
| anvil and flash hole | provide mechanism for delivering explosive charge from primer powder |
| ballistics | study of projectiles (bullets) and firearms |
| barrel | long metal tube that guides projectile out of firearm |
| breech | end of the barrel attached to the firing mechanism of a firearm where the cartridge is loaded and unloaded |
| breechblock markings | markings produced as the cartridge casing moves backward and strikes the breechblock. |
| bullet | projectile that is released when a firearm is discharged |
| caliber | measure of the inside diameter of a firearm barrel |
| cartridge | case that holds a bullet, primer powder and gunpowder |
| drugfire | FBI database focusing on cartridge casings |
| ejector marks | scratches on a cartridge produced by removing from firing chamber |
| extractor marks | scratches produces by placing cartridge in firing chamber |
| firearm | weapon capable of firing a projectile using a confined explosive as a propellent |
| firing pin marks | impressions made on bottom of cartridge by firing pin as it strikes the bottom of the cartridge. |
| flint lock weapons | used sparks from a chip of flint instead of wicks to ignite the powder allowing them to work even in damp weather |
| fully automatic | fire repeatedly as long as trigger is pressed |
| grooves | indentations or depressions |
| gunshot residue (GSR) | tiny particles expelled from a firearm when the firearm is fired |
| headstamp | bottom of cartridge casing identifies caliber and manufacturer |
| lands | ridges or raised areas |
| match lock weapons | had wicks to carry a flame to gunpowder |
| muzzle | end of the barrel from which the projectile exits the firearm |
| NIBIN | National Integrated Ballistics Network |
| NIBIS | National Integrated Bullet Identification System |
| percussion weapons | use of cartridge and case |
| pistol | handheld firearm (one hand) |
| primer powder | used to ignite the gunpowder |
| revolver | holds 6 cartridges in the cylinder |
| rifle | firearm with a long barrel |
| rifling | spiral pattern of lands and grooves in the barrel of a firearm |
| saltpeter | potassium nitrate |
| semiautomatic | fires only 1 bullet per pull of trigger |
| shell casing | metal (usually brass) housing for the gunpowder of a firearm |
| trajectory | path of flight of a projectile |
Created by:
mrsklann
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