I love legos
_______ refers to the scientific analysis of firearms, bullets, and the travel of projectiles in flight.
Ballistics
What color suitcases does Ms. S have?
Purple
The diameter of the bullet or barrel, usually measured in inches or millimeters
Caliber
The ______ invented gunpowder over a thousand years ago to make fireworks and weapons.
Chinese
The first firearms, called ________ weapons, used wicks to ignite the gunpowder.
Matchlock
________ weapons used sparks from flint to ignite the gunpowder.
Flintlock
A _______ is a volatile compound that ignites when struck by the firing pin of a gun.
Straight shooting tube used to propel the projectile out of the muzzle
Barrel
The cuts made by the rifling inside the gun barrel
Striations
The lever which must be pulled in order to release the bullet
Trigger
The interior raised portion of a rifled barrel between two grooves
Lands
A _______, also called a round, is a case that holds a bullet
Cartridge
Name the three types of ballistics we studied
Internal, External, and Terminal
True or False:
The amount of GSR increases as the distance between the victim and the firearm increases
False
Name one of the three databases for ballistics
NIBIN, (N)IBIS, or Drugfire
________ is the path of a propelled bullet
Trajectory
________ is trace evidence made of smoke and unused powder particles that can land on the hand, arm, face, hair, and clothing of the shooter and victim
GSR
How many reference points are needed to calculate the trajectory?
2
When a gun is fired, this is the piece that is propelled out of the barrel.
Bullet
What does a .20 caliber gun mean
The barrel is .20 inches in diameter
Name 3 things that a ballistic expert can determine
caliber of the bullet, positioning of the shooter, if the firearm was used in a previous case, what type of firearm was used, how many bullets were fired
When a gun is fired, this piece is ejected from, typically, the side of the gun rather than propelled out of the barrel
Casing
Name on thing that can alter a bullet's trajectory path (we discussed 2 possible answers in class)
Wind or Gravity
What chemical does common GSR tests identify?
Nitrates
The breech, ejector, and firing pin leave marks on the
Cartridge