CFC CFC Firearms, Ballistics & Tool Mark Examination 2

Question 1

In a shooting incident reconstruction, 'trajectory analysis' is used to determine:

Accepted Answer

The path the bullet traveled and the relative position of shooter and victim

Answer

Trajectory analysis uses bullet holes, rod or laser alignment, and wound track data to reconstruct the bullet's path and infer the shooter's approximate location.

Question 2

Which characteristic of a bullet wound indicates that it is an exit wound rather than an entry wound?

Accepted Answer

Larger, irregular, and stellate margin without an abrasion collar

Answer

Exit wounds are typically larger and more irregular than entry wounds because the bullet destabilizes and pushes tissue outward, leaving a ragged, stellate margin without an abrasion collar.

Question 3

Which type of evidence is a 'fired projectile' classified as in forensic ballistics?

Accepted Answer

Individualized physical evidence

Answer

A fired projectile bearing land and groove striations can be individualized to a specific firearm barrel, making it individualized physical evidence.

Question 4

Serial number restoration on a firearm from which the serial number has been ground off uses which forensic technique?

Accepted Answer

Chemical etching or magnetic particle inspection exploiting subsurface metal stress

Answer

Grinding compresses but does not fully erase the altered crystal structure beneath; acid etching or magnetic inspection reveals these subsurface stress patterns, restoring the number.

Question 5

The National Integrated Ballistic Information Network (NIBIN) is a database that allows law enforcement to link crimes by comparing:

Accepted Answer

Digital images of fired cartridge case marks

Answer

NIBIN stores and compares digital images of breechface, firing pin, and ejector marks from fired cartridge cases to link shootings to a common weapon across jurisdictions.

(CFC) Certified Forensic Consultant Practice Test

(CFC) Certified Forensic Consultant Practice Test

CFC CFC Firearms, Ballistics & Tool Mark Examination 2