Ballistics

Question 1

Barrel

Answer 1

The long metal tube that guides a projectile out of a firearm

Question 2

Breech or (Breechface)

Answer 2

The end of the barrel attached to the firing mechanism of a firearm where the cartridge is loaded or unloaded

Question 3

Bullet

Answer 3

The projectile that is released when a firearm is discharged

Question 4

Caliber

Answer 4

A measure of the inside diameter of a firearm barrel

Question 5

Cartridge

Answer 5

A case that holds a bullet, primer powder and gun powder

Question 6

Firearm

Answer 6

A weapon capable of firing a projectile using a confined explosive as a propellant

Question 7

Ballistics

Answer 7

The study of projectiles and firearms

Question 8

Grooves

Answer 8

DEPRESSIONS found on the inside of a firearms barrel that are created when firearm is manufactured

Question 9

Gunshot Residue (GSR)

Answer 9

The tiny particles expelled from a firearm when fired

Question 10

Lands

Answer 10

RIDGES found on the inside of a firearms barrel that are created when firearm is manufactured

Question 11

Muzzle

Answer 11

The end of the barrel from which the projectile exits a firearm

Question 12

Rifling

Answer 12

The spiral pattern of lands and grooves in the barrel of a firearm

Question 13

Shell casing

Answer 13

The metal housing for the gun powder of a firearm

Question 14

Trajectory

Answer 14

The path of flight of a projectile

Question 15

True or false (correct if false):The lands and grooves of a barrels rifling improve the accuracy of a bullet

Answer 15

True

Question 16

True or false (correct if false) : The caliber of a cartridge is always measured in mm.

Answer 16

False

Usually measured in inches

Question 17

True or false (correct if false): Firing Pin marks are found on the back of a bullet.

Answer 17

False. Cartridge cases

Question 18

True or false (correct if false): Lands and grooves help match a crime scene bullet with its shell casing

Answer 18

False. Gun

Question 19

True or false (correct if false): The caliber of a bullet is related to its width

Answer 19

True

Question 20

True or false (correct if false): Semiautomatic pistols store cartridges in a cylinder.

Answer 20

False! magazine

Question 21

True or false (correct if false): The equation for determining the height from which a shot was fired is B= Ax sin(O)

Answer 21

False! B= atan(O)

Question 22

True or false (correct if false): The grooves on a bullet are made by the lands on the barrel and thus correspond in width.

Answer 22

True

Question 23

True or false (correct if false): The head stamp always lists the caliber of the cartridge.

Answer 23

False! Usually

Question 24

True or false (correct if false): Handguns are more accurate and shoot to longer distances than rifles.

Answer 24

False
Rifles
Handguns

Question 25

True or false (correct if false): Lands and grooves help match a crime scene bullet with its shell casing

Answer 25

False. Gun

Question 26

True or false (correct if false): The caliber of a bullet is related to its width

Answer 26

True

Question 27

True or false (correct if false): Semiautomatic pistols store cartridges in a cylinder.

Answer 27

False! magazine

Question 28

True or false (correct if false): The equation for determining the height from which a shot was fired is B= Ax sin(O)

Answer 28

False! B= atan(O)

Question 29

True or false (correct if false): The grooves on a bullet are made by the lands on the barrel and thus correspond in width.

Answer 29

True

Question 30

What 4 things does a cartridge contain?

Answer 30

Bullet, case, gunpowder, primer

Question 31

What are the 7 steps that are taken when firing a gun? Start with pulling trigger and end with bullet hitting the target

Answer 31

1. pull trigger
2. Hammer hits firing pin
3. Firing pin hits primer
4. Primer ignites gunpowder
5. Pressure shoots out bullet
6. Bullet travels along trajectory
7. Bullet hits target

Question 32

What is the purpose of the extractor?

Answer 32

To remove the spent casing

Question 33

What are the two different types of handguns?

Answer 33

Pistol and revolver

Question 34

What are two similarities of a revolver and pistol?

Answer 34

Close range and both handguns

Question 35

What are two differences of a pistol and revolver?

Answer 35

Pistol: magazine/ safety
Revolver: cylinder/ no safety

Question 36

What are the three types of rifles?

Answer 36

Bolt action, lever action, and automatic

Question 37

What is one difference between bolt action, lever action and automatic rifles ?

Answer 37

Bolt: longer distance
Lever action: less powerful
Automatic rifles: military

Question 38

What are three similarities between the bolt action, lever action and automatics?

Answer 38

Long guns, larger rounds, and greater distances

Question 39

What are the three different types of shotgun ammunitions?

Answer 39

Bird shot, buck shot, and slug

Question 40

What is one difference between the three shotgun ammunitions: bird, Buck and slug?

Answer 40

Bird shot: small pellets Buck: larger pellets

Slug: single bullet

Question 41

What is one similarity about the three shotgun ammunitions: bird, Buck and slug?

Answer 41

All are used for hunting birds or small animals that move quickly

Question 42

What are the three types of ballistics?

Answer 42

Internal, external and terminal

Question 43

What is one difference between the three types of ballistics: internal, external and terminal?

Answer 43

Internal: inside the firearm
External: flight of bullet
Terminal: the target

Question 44

What is one similarity between the three types of ballistics: internal, external and terminal?

Answer 44

All scientific analysis of all ballistics evidence is to determine what actually happened.