Forensics - Tool Marks and Ballistics

Chips and dents on a hammerhead can produce unique tool marks

• True

• False

In court, a lawyer must be able to fit the tool into the tool mark to convince a jury that they are consistent

• True

• False

There is little forensic value in examining cut marks in wood because all cut wood looks similar

• True

• False

NIBIN is a database that contains names of perpetrators convicted in firearms cases

• True

• False

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

What tool is used to compare striations of fired bullets?

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

What is the difference between an entry and exit wound?

• entry wounds are smaller than exit wounds
• exit wounds are smaller than entry wounds
• exit wounds pull fibers into the body, entry wounds do not
• an exit wound can have an abrasion ring

The striations left on bullets from rifling are cause by what?

• Grooves and lands

• Grooves and loops

• Lands and loops

• Grooves and pins

Which of the following is NOT a component of a cartridge?

• Bullet

• Casing

• Primer powder

• Firing pin