Ballistics Review

Which of the following would external ballistics be most likely to study?

• bullet trajectory
• striation markings
• extractor and ejector markings
• powder tattoo patterns

What is a wadcutter bullet primarily used for?

• home defense
• target practice
• maximum target damage
• large game hunting

What is the difference between a bullet and a cartridge?

• the bullet is the projectile, while the cartridge holds the bullet, powder, and primer
• the cartridge is the projectile, while the bullet holds the cartridge, powder, and primer
• they are the same thing
• a bullet is larger and used more frequently than a cartridge

What is the primary determining factor of the caliber of a bullet?

• weight
• length
• diameter
• mass

Where are lands and grooves found?

• inside the barrel of a firearm
• negative impressions on a bullet
• both of these places
• neither of these places

Where are extractor and ejector marks found?

• on the bullet
• on the cartridge
•  both of these places
• neither of these places

What tool is used to compare striations of fired bullets?

• compound microscope
• comparison microscope
• scanning electron microscope
• transmission electron microscope

Which of these databases is used by firearms investigators?

• IBIS
• AFIS
• CODIS
• NCIC

What are the Griess test, lead residue test, and diphenylalamine test used for?

• GSR testing
• electrophotometry
• spectroscopy
• bullet trajectory tests

How far was the shooter from the target if there is a powder tattoo around the wound?

• 0-3 inches
• 12-18 inches
• 25-36 inches
• more than 3 feet