Forensic Ballistics (Forsci)

Front 1

Greek word, ballo or ballein meaning

Back 1

To throw

Front 2

Roman war machine ballista meaning

Back 2

A gigantic bow

Front 3

Bullet that passes through the barrel of a firearm

Back 3

Projectiles

Front 4

Study of the motion of projectiles

Back 4

Ballistics

Front 5

All the rifles, revolvers and used in the propulsion of projectile by means of expansive forces of gases

Back 5

Firearms

Front 6

Curved path of the bullet

Back 6

Trajectory

Front 7

Distance between the muzzle and the target

Back 7

Range

Front 8

2 types of range:

Back 8

Accurate range - fatal

Maximum range - maximum distance

Front 9

Capacity of the bullet to resist air during its flight from the muzzle to the target

Back 9

Air resistance

Front 10

Unstable movement of bullet on flight

Back 10

Yawing

Front 11

The entry of bullet in the target

Back 11

Penetration

Front 12

The entry and exit wound

Back 12

Perforation

Front 13

Bouncing back after hitting a hard surface

Back 13

Ricochet

Front 14

Cherry-red discoloration gun powder

Back 14

Muzzle Imprint

Front 15

Distance between two opposite lands

Back 15

Caliber/Bore diameter

Front 16

Hole of the barrel near the muzzle end

Back 16

Bore

Front 17

Composition of lands and grooves

Back 17

Rifling

Front 18

It is the elevated portion

Back 18

Lands

Front 19

It is the depressed portion

Back 19

Grooves

Front 20

Branches of Ballistics

Back 20

Interior Ballistics

Exterior Ballistics

Terminal ballistics

Forensic ballistics

Front 21

Study of projectiles while still inside the barrel

Back 21

Interior ballistics

Front 22

Failure of cartridge to explode (cause: the gun is wet)

Back 22

Misfire

Front 23

Delay of explosion

Back 23

Hangfire

Front 24

It is the slow exit of the bullet in barrel that can result to backfire

Back 24

Stock up

Front 25

Rearward movement of the gun

Back 25

Recoil

Front 26

KCL3 (sulfur) and C (carbon)

Back 26

Priming mixture

Front 27

shell is separated from the bullet and the shell will be pushed

Back 27

Breech face marks

Front 28

Accessory used to reduce recoil

Back 28

Compensator

Front 29

More gunpowder, the ______ the bullet flight

Back 29

Faster

Front 30

It stabilizes the movement and increase the velocity

Back 30

Rifling

Front 31

Stability of the bullet due to the twist of the rifling

Back 31

Gyroscopic stability

Front 32

No rifling and no gyroscopic stability

Back 32

Smooth-bore

Front 33

Caused by yawing resulting to target sideways

Back 33

Keyhole shot

Front 34

Process of interior ballistics:

Back 34

A. Firing pin hits the primer

B. Ignition of the priming mixture

C. Combustion of gun powder

D. Expansion of the heated gas

E. Pressure will be developed

F. Energy generated

G. Recoil of the fa

H. Velocity of the bullet inside the fa

I. Rotating of the bullet inside the fa

J. Engraving of the cylindrical surface of the bullet

Front 35

Study of the projectile after leaving the muzzle and before it hits the target

Back 35

Exterior ballistics

Front 36

Factors that will affect the flight of bullet

Back 36

1. Structure of the bullet

2. Size of the bullet

3. Air resistance

Front 37

Stages of trajectory

Back 37

1. Straight horizontal line

2. Parabola-like flight

3. Vertical drop

Front 38

Impact of projectile to the target

Back 38

Terminal ballistics

Front 39

Size of the bullet grouping

Back 39

Terminal accuracy

Front 40

Energy of force

Back 40

Terminal energy

Front 41

Depth of entry

Back 41

Terminal penetration

Front 42

Speed of the bullet upon striking the target

Back 42

Terminal velocity

Front 43

Accuracy vs. Precision

Back 43

Consistency vs. How close

Front 44

Science of firearm identification by means of ammunition

Back 44

Forensic Ballistics

Front 45

3 steps of Forensic Ballistics

Back 45

1. Field investigation

2. Technical examination

-examination/comparison called test firing

3. Legal proceedings

-ballistic report

Front 46

2 types of handguns

Back 46

Revolvers - rotating cylinders

Pistol - magazine

Front 47

A type of firing mechanism wherein cocking the hammer before squeezing the trigger

Back 47

Single action

Front 48

A type of firing mechanism wherein squeezing the trigger then releases the hammer

Back 48

Double action

Front 49

Separate the pull of trigger

Back 49

Semi-automatic

Front 50

Would continue to fire

Back 50

Automatic

Front 51

It is fired from the shoulders called long guns

Back 51

Rifles

Front 52

4 types of rifles:

Back 52

1. Single-shot rifle

-loaded one at a time and no magazine

2. Semi-automatic rifle

-fire one round

3. Pump action

-parallel to the barrel

4. Battle rifle

-for battles

5. Assault rifle

-close range

Front 53

Has a smooth-bore

Back 53

Shotgun

Front 54

Fully-automatic

Back 54

Machine gun

Front 55

Largest gun used in combat

Back 55

Gustav gun

Front 56

Light-weight machine gun

Back 56

Sub-machine gun

Front 57

Home made gun

Back 57

Craft weapons

Front 58

Tear gas

Back 58

Gas gun

Front 59

Send signals

Back 59

Flare gun

Front 60

What to determine in forensic ballistic examination?

Back 60

1. Evidence bullet

2. Fired cartridge case

3. 2 or more fire bullets

4. 2 or more fire cartridge case

5. Evidence bullet and suspected fa

6. Fired cartridge case and suspected fa

7. Firearm

Front 61

Characteristics of Firearm

Back 61

Class characteristics

Individual characteristics

Front 62

Before the manufacturer

Back 62

Class characteristics

Front 63

After the manufacturer

Back 63

Individual characteristics

Front 64

Feature of class characteristics

Back 64

1. Caliber

2. No. of lands and grooves

3. Width of lands and grooves

4. Twist of rifling

5. Pitch of rifling

6. Depth of grooves

Front 65

Feature of individual characteristics

Back 65

1. Bullet markings

2. Cartridge case markings

Front 66

Composition of Ammunition (4)

Back 66

Bullet

Shell/Cartridge Case

Gunpowder

Primer

Front 67

Jacketed bullet soft-core

Back 67

Bullet

Front 68

Contains the bullet

Back 68

Shell

Front 69

2 types of gunpowder

Back 69

Black powder and smoke less gunpowder

Front 70

Struck by the firing pin

Back 70

Primer

Front 71

It is a loaded shell

Back 71

Ammunition

Front 72

Unfired ammunition

Back 72

Cartridge

Front 73

Soft material (lead)

Back 73

Expand

Front 74

Hard material (steel)

Back 74

Do not expand