Anatomy of a Bullet
This part of the cartridge contains the explosive chemicals that ignite the gunpowder.
What is Primer?
This force, according to __________ causes the cartridge casing to fly backward as the bullet goes forward.
What is Newtons 3rd Law?
These are the microscopic scratches left on a bullet as it travels through the barrel.
What are striations?
This is the actual projectile that leaves the barrel of the gun.
What is a bullet?
This is the metal housing that holds the gunpowder and the projectile together.
What is Casing?
This is the term for the spiral pattern of lands and grooves inside a barrel.
What is Rifling?
Investigators use this term to describe the angle at which a bullet strikes a victim or surface.
What is Angle of Impact?
This term refers to the specific diameter of a bullet.
What is Caliber?
The "rim" of a cartridge is located on this specific part of the assembly.
This physical action is what the rifling causes the bullet to do, ensuring a more accurate flight path.
What is Spiral?
This specific marking is left on the cartridge's primer or rim by the part of the gun that initiates ignition.
What us a Firing Pin?
This classification of handgun is capable of firing repeatedly as long as the trigger remains pressed.
What is Fully Automatic?
This substance provides the chemical energy and pressure needed to propel the bullet forward.
What is Gun Powder?
High pressure from this event is what actually pushes the bullet out of the casing and into the barrel.
What is Ignition?
Because of this fact, bullet striations can be used to determine an exact firearm.
What is uniqueness?
These are the two sub-categories for modern handguns mentioned in the slides.
What is Pistol & Revolvers?
In a shotgun, this is the name for a single, large projectile rather than multiple pellets.
What is a Slug?
A gun leaves "___________" on the spent casing.
What is Breech Marks?
Ballistics can determine if a specific firearm was used in this type of previous event.
What is a Previous Crime?
This type of firearm requires two hands for accurate firing.
What is a Long Gun?