Deck 12: Firearms and Toolmarks

Question 1

A tool mark is a microscopic marking left by the action of a tool on an object.

Answer 1

True

Question 2

Firearms identification rarely involves tool mark analysis.

Answer 2

False

Question 3

The deposition of gunshot residue (GSR) at close range is known as stifling.

Answer 3

False

Question 4

It is difficult, if not impossible, to restore serial numbers on weapons.

Question 5

Revolvers normally use a magazine to load cartridges into the chamber.

Question 6

Shotguns contain rifling in their barrel.

Question 7

Indentations in the barrel of a gun are known as groove impressions.

Question 8

Caliber is used to describe the length of a barrel.

Question 9

Mercury fulminate was discovered in 1807 by James Forsythe.

Question 10

Water tanks are short, narrow and shallow tanks used to test fire projectiles from suspect weapons.

Question 11

All of the following are class characteristics of a bullet except

A) caliber
B) twist
C) number of land / groove impressions
D) striations in land or groove impressions

Question 12

Which of the following gunshots results in GSR being found embedded in the tissue of the victim?

A) contact shot
B) distance shot
C) neither, as GSR is never found in the tissues
D) both a & b

Question 13

The database the FBI and BATF formed in 1997 to allow for searching of bullets or cartridges is known as

A) DRUGFIRE
B) NIBIN
C) IBIS
D) CODIS

Question 14

Which of the following is NOT a type of weapon projectile?

A) full metal jacket
B) wadcutter
C) leaded wadcutter
D) jacketed hollow point

Question 15

The oldest recorded propellant for firearm use is known as

A) nitroglycerine
B) smokeless powder
C) gasoline
D) black powder

Question 16

The land impression impressed in a fired bullet is made by the _____ in the barrel of a weapon.
A ) groove impression
B) land impression
C) caliber number
D) reaming tool

Question 17

The study of patterns of injuries caused by firearm projectiles is known as

A) stippling
B) wound ballistics
C) wound contusions
D) GSR

Question 18

Grooves are dug into a barrel in

A) straight fashion
B) diagonal and crisscross fashion
C) spiral fashion
D) none of the above

Question 19

Which of the following is not a type of weapon designed to be held with two hands.

A) rifles
B) shotguns
C) submachine guns
D) all are designed to be held with two hands

Question 20

Which of the following chemicals may be used as part of a solution to recover serial numbers on a weapon?

A) cupric chloride
B) hydrochloric acid
C) sodium cyanide
D) a and b only
E) a and c only

Question 21

Which two parts of a weapon might leave an impression on a cartridge casing?

A) barrel, firing pin
B) extractor, ejector
C) land impression, groove impression
D) caliber pin, barrel

Question 22

Cutting the barrel of a gun with a metal tool in order to cut curved grooves along its length is called

A) rifling
B) grooving
C) stippling
D) ballistics

Question 23

The bore diameter of a shotgun that is called

A) caliber
B) twist
C) rifling
D) gauge

Question 24

Measuring the bore diameter using solid spheres of a diameter equal to the inside diameter of the barrel that could be made from a pound of lead is done in which weapon?

A) Semi-automatic
B) Shotgun
C) Revolver
D) Machine gun

Question 25

Breachface markings can be found on the

A) Bullet
B) Cartridge Case
C) Both of these
D) Neither of these