What is rifling?

• the markings made on a bullet as it move through the gun barrel

• the grooves in a gun's barrel that impart spin on the bullet

• the size of the barrel

• the markings made on the back of the cartridge casing

How can rifling be used to solve a crime?

• match it to a person's fingerprint

• determine the direction the bullet came from

• use the striations on the bullet to match to a certain gun

• all of the above

Define ballistics

• the study of weapons

• the study of projectiles

• the study of firearms only

• the study of OG ballers

What does caliber refer to?

• the size of a bullet

• the size of a gun

• the distance a bullet travels

• the gun manufacturer

Define the acronym GSR.

• Gun Shot Reflex

• Gun Shot Retirement

• Gun Shot Reading

• Gun Shot Residue

How can GSR assist investigators with a crime?

• identifies the gun that was used

• approximates the distance between the victim and suspect

• identifies the fingerprints on the gun

• determines who may have shot the gun

cortex

• the region of hair located outside of the medulla containing granules of pigments

• material that connects an individual or thing to a certain group

• a type of fibrous protein that makes up the majority of the cortex of a hair

• the tough outer covering of a hair composed of overlapping scales

cuticle

• the central core of a hair fiber

• material that connects an indivisual or thing to a certain group

• a type of fibrous protein that makes up the majority of the cortex of a hair

• the tough outer covering of a hair composed of overlapping scales

hair follicle

• the actively growing root or base of hair containing DNA and living cells

• material that connects an individual or thing to a certain group

• a type of fibrous protein that makes up the majority of the cortex of a hair

• the tough outer covering of a hair composed of overlapping scales

individual evidence

• bits of pigment found in the cortex of a hair

• a kind of evidence that identifies a particular person or thing

• small but measurable amounts of physical or biological material found at crime scene

• the actively growing root or base of hair containing DNA and living cells