vocabulary ch. 17
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| anvil and flash hole | provide mechanism for delivering explosive charge from primer powder
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| ballistics | study of projectiles (bullets) and firearms
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| barrel | long metal tube that guides projectile out of firearm
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| breech | end of the barrel attached to the firing mechanism of a firearm where the cartridge is loaded and unloaded
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| breechblock markings | markings produced as the cartridge casing moves backward and strikes the breechblock.
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| bullet | projectile that is released when a firearm is discharged
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| caliber | measure of the inside diameter of a firearm barrel
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| cartridge | case that holds a bullet, primer powder and gunpowder
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| drugfire | FBI database focusing on cartridge casings
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| ejector marks | scratches on a cartridge produced by removing from firing chamber
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| extractor marks | scratches produces by placing cartridge in firing chamber
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| firearm | weapon capable of firing a projectile using a confined explosive as a propellent
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| firing pin marks | impressions made on bottom of cartridge by firing pin as it strikes the bottom of the cartridge.
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| 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
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| fully automatic | fire repeatedly as long as trigger is pressed
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| grooves | indentations or depressions
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| gunshot residue (GSR) | tiny particles expelled from a firearm when the firearm is fired
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| headstamp | bottom of cartridge casing identifies caliber and manufacturer
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| lands | ridges or raised areas
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| match lock weapons | had wicks to carry a flame to gunpowder
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| muzzle | end of the barrel from which the projectile exits the firearm
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| NIBIN | National Integrated Ballistics Network
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| NIBIS | National Integrated Bullet Identification System
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| percussion weapons | use of cartridge and case
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| pistol | handheld firearm (one hand)
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| primer powder | used to ignite the gunpowder
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| revolver | holds 6 cartridges in the cylinder
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| rifle | firearm with a long barrel
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| rifling | spiral pattern of lands and grooves in the barrel of a firearm
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| saltpeter | potassium nitrate
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| semiautomatic | fires only 1 bullet per pull of trigger
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| shell casing | metal (usually brass) housing for the gunpowder of a firearm
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| trajectory | path of flight of a projectile
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
mrsklann
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