- 1. It is designed to permit the firearm examiner to differentiate two fired bullet or shell, by simultaneously observing their magnified image in a single microscopic field.
A) Bullet Comparison Microscope
B) Shadowgraph
C) CP-6 Comparison Projector
D) Stereoscopic Microscope
- 2. It is generally used in the primary examinations of fired bullets and
shells to determine the relative distribution of the class characteristics or for orientation purposes. It can also be u
A) Bullet Comparison Microscope
B) CP-6 Comparison Projector
C) Stereoscopic Microscope
D) Shadowgraph
- 3. It contains a series of microscopic lenses of different
magnifications that can be used in examining fired. bullets or fired
shells to determine the class characteristics and also for
orientation purposes. This instrument contains a large circular
Shadowgraph ground glass, and a diameter of about 14 inches,
wherein the observation and comparison of class characteristics are done similarly with the bullet
A) Shadowgraph
B) Micrometer/Caliper
C) CP-6 Comparison Projector
D) Stereoscopic Microscope
- 4. Similar to bullet comparison micro-scope in which two fired bullets
of the shell can be compared simultaneously by projecting the image on a
large screen and is observed at a vertical and comfortable viewing. The instrument was invented by William Howard Livens, an engineer, and British army.
A) Bullet Comparison Microscope
B) CP-6 Comparison Projector
C) Bullet Recovery Box
D) Stereoscopic Microscope
- 5. It used to obtain test fired bullets or test fired shells for
examination and comparison to the questioned bullets or shell.
Several designs of bullet recovery box are now adopted, for as long
as it could meet the desired result in test firing and retrieved the fired
bullet undamaged. This is commonly filled with cotton but sometimes water tank, sawdust with oil, sand, waste threads, darak, banana trunks or rubber strips can be used and separated by cardboards
A) Bullet Recovery Box
B) CP-6 Comparison Projector
C) Bullet Comparison Microscope
D) Stereoscopic Microscope
- 6. This is used in making measurements of bullets such as
diameter, bore diameter, barrel length and other important
details.
A) Onoscope
B) Bullet Recovery Box
C) Analytical or Torsion Balance
D) Micrometer/Caliper
- 7. Used for determining weights of bullets or shotgun pellets for possible determination of type, caliber, and make of firearms from which fired.
A) Micrometer/Caliper
B) Taper Gauge
C) Onoscope
D) Analytical or Torsion Balance
- 8. A small instrument that is sometimes used in examining the internal surface of the gun barrel
with a tiny lamp at the terminal portion and this is inserted inside the bore for internal examination.
A) Analytical or Torsion Balance
B) Onoscope
C) Scanning Microscope Electron
D) Chronograph
- 9. It is used primarily for determining the bore diameter of firearms.
A) Chronograph
B) Scanning Microscope Electron
C) Taper Gauge
D) Bullet Puller
- 10. identify leftover particles like gunpowder residues and
primer residues. This is a computer system combined with an
electron microscope and laser spectrophotometry
unit. Its power is so great that with a mere speck of dust, it
could identify the elemental components of the particle under
examination.
A) Filar Micrometer Eyepiece
B) Scanning Microscope Electron
C) Chronograph
D) Electric Gun Marker/Stylus
- 11. It is used to measure the speed of the bullet. It was
invented by Alfred Lee Loomis in 1918.
A) Taper Gauge
B) Chronograph
C) Onoscope
D) Scanning Microscope Electron
- 12. It is used to separate the bullet from the cartridge case.
A) Bullet Puller
B) Chronograph
C) Electric Gun Marker/Stylus
D) Taper Gauge
- 13. Used in the laboratory for marking fired bullets, fired shells, and firearms submitted for examination
A) Helixometer
B) Electric Gun Marker/Stylus
C) Filar Micrometer Eyepiece
D) Computerized Comparison Microscope
- 14. A measuring microscope to read the width of the land
and groove marks and to obtain the pitch of the rifling in turns
per inch.
A) Electric Gun Marker/Stylus
B) Helixometer
C) Filar Micrometer Eyepiece
D) Computerized Comparison Microscope
- 15. It is used in measuring the pitch of rifling’s of
firearms. This instrument is generally rally used in highly
advanced ballistics laboratory. With this instrument, it is
possible to measure the angle of twist in a rifled pistol or
revolver barrel.
A) Electric Gun Marker/Stylus
B) Helixometer
C) Computerized Comparison Microscope
D) Filar Micrometer Eyepiece
- 16. It is similar to the bullet comparison microscope; the only
difference is the magnified image that is seen on the monitor. It is
more convenient to use than a manual one
A) Electric Gun Marker/Stylus
B) Filar Micrometer Eyepiece
C) Helixometer
D) Computerized Comparison Microscope
- 17. a term originated from the Latin word "forum", meaning "marketplace”, where people gather for public disputation or public discussion.
A) Firing pin hitting the primer
B) Forensic
C) Forensic Ballistics
D) Ignition of the priming mixture
- 18. refers to the science of investigation and identification of firearms and ammunition used
in crimes.
A) Forensic Ballistics
B) Forensic
C) Ignition of the priming mixture
D) Firing pin hitting the primer
- 19. So that the primer should explode, the firing pin should hit such. This is due to the theory of friction wherein there is a resistance to motion created by the firing pin
A) Ignition of the priming mixture
B) Firing pin hitting the primer
C) Combustion of the gunpowder
D) Expansion of the heated gas
- 20. The priming mixture is made up of very sensitive material that is
commonly located in the center portion of the cartridge case. In order to ignite the priming mixture, it must be live and potent and must be devoid of any moisture.
A) Firing pin hitting the primer
B) Expansion of the heated gas
C) Combustion of the gunpowder
D) Ignition of the priming mixture
- 21. As the primer is crushed and ignited, the flash passes through the vent towards the gunpowder that provides the combustion of gunpowder.
A) Combustion of the gunpowder
B) Ignition of the priming mixture
C) Expansion of the heated gas
D) Firing pin hitting the primer
- 22. There will be an equal expansion of heated gas inside the cartridge,
after the combustion of gunpowder. The gas expanded in a different direction that tends the bullet and shell to separate from each other in the cartridge.
A) Firing pin hitting the primer
B) Pressure developed
C) Energy generated
D) Expansion of the heated gas
- 23. When the heated gas created by the burning powder charge is developed, a tremendous pressure is produced in the chamber of the firearm
A) Recoil of the gun
B) Combustion of the gunpowder
C) Pressure developed
D) Energy generated
- 24. Energy refers to the fatal equivalent of a bullet compared to a pound that is dropped from a certain height.
A) Energy generated
B) Recoil of the gun
C) Pressure developed
D) Velocity of the bullet in the gun
- 25. The recoil of the gun is due to Newton's third law of motion (law of interaction)
which states that every action is always equal and opposite reaction. The forward movement of the
bullet after the explosion results in the backward movement of the cartridge case. Recoil of the gun is
affected by several things such as tightness with which the firearm is held, height of the bore above the
center of the stock line of wrist for pistols, shape and design of the butt plate or the pistol's grip, weight of the firearm and the physical and mental condition of the shooter.
A) Energy generated
B) Pressure developed
C) Recoil of the gun
D) Velocity of the bullet in the gun
- 26. The bullet will travel the bore of the barrel depending on the powder
load of the cartridges, since it is the powder load that will propel the bullet in the bore of the barrel of the firearm.
A) Velocity of the bullet in the gun
B) Engraving of the cylindrical surface of the bullet
C) Rotation of the bullet in the barrel
D) Energy generated
- 27. It is the visible light of a muzzle blast, which expels high-temperature, high-pressure
gases from the muzzle of a firearm. The combustion products of the gunpowder cause the blast and flash, and any remaining unburned powder, mixing with the ambient air
A) Recoil of the gun
B) Energy generated
C) Muzzle Flash
D) Pressure developed
- 28. it is the noise created at the muzzle point due to the sudden escape of the expanding
gas coming in contact with the surrounding atmosphere. Due to this sound at the muzzle end of the gun, a silencer was invented to minimize the sound, which the criminal took advantage of to conceal the crime.
A) Trajectory
B) Range
C) Muzzle energy
D) Muzzle blast
- 29. it is energy generated at the muzzle point, whenever the cartridge explodes from a
firearm
A) Trajectory
B) Muzzle blast
C) Range
D) Muzzle energy
- 30. it is the actual curve path of the bullet during its flight from the gun muzzle to the target.
There are three stages of trajectory namely, straight horizontal line, parabola-like flight, and vertical
drop.
A) Range
B) Muzzle energy
C) Muzzle blast
D) Trajectory
- 31. straight distance from the muzzle to the target. It is classified into
A) Muzzle energy
B) Trajectory
C) Muzzle blast
D) Range
- 32. it is the distance within a shooter that has control of his shots. Zero Range this is the farthest distance at which the line of sight and the bullet's path intersect.
A) Velocity
B) Accurate Range
C) Maximum Range
D) Effective Range
- 33. the distance within which when the bullet was fired it is still capable of
inflicting fatal injury.
A) Velocity
B) Effective Range
C) Maximum Range
D) Accurate Range
- 34. it is the farthest distance that a projectile can be propelled from a firearm
A) Maximum Range
B) Accurate Range
C) Effective Range
D) Velocity
- 35. it is the rate of speed per unit of time.
A) Velocity
B) Pull of gravity
C) Penetration
D) Air resistance/aerodynamic drag
- 36. resistance encountered by the bullet during its flight which
reduces its speed. There are three parts of drag bullet, namely:
A) Air resistance/aerodynamic drag
B) Pull of gravity
C) Penetration
D) Velocity
- 37. downward reaction of the bullet towards the center of the earth, due to its weight. The
pull of gravity will apply only, starting from the parabola, then to the maximum range and to the final vertical drop. However, in the effective range, the bullet could withstand the pull of gravity due to its velocity and gyroscopic stability.
A) Pull of gravity
B) Velocity
C) Penetration
D) Air resistance/aerodynamic drag
- 38. the depth of entry on the target based on the power and velocity of the bullet.
A) Air resistance/aerodynamic drag
B) Velocity
C) Penetration
D) Pull of gravity
- 39. due to air pressure at the head of the projectile
A) Skin friction
B) Base drag
C) Bow resistance
D) Velocity
- 40. caused by the friction of air moving along the middle portion of the body
A) Velocity
B) Base drag
C) Bow resistance
D) Skin friction
- 41. due to the under-pressure and disturbance of the air behind the base
A) Base drag
B) Bow resistance
C) Velocity
D) Skin friction
- 42. grouping on the target. it is the size of the bullet
A) Terminal accuracy
B) Terminal velocity
C) Terminal penetration
D) Terminal energy/striking energy
- 43. it is the energy of the projectile when it strikes the target. This
referred to the fatal equivalent of a bullet when it struck the victim.
A) Terminal accuracy
B) Terminal penetration
C) Terminal velocity
D) Terminal energy/striking energy
- 44. it is the speed of the bullet upon striking the target.
A) Terminal velocity
B) Terminal energy/striking energy
C) Terminal penetration
D) Terminal accuracy
- 45. it is the depth of entry of the bullet in the targe
A) Terminal penetration
B) Terminal accuracy
C) Terminal energy/striking energy
D) Terminal velocity
- 46. are conducted by first responders when they investigate a case wherein
firearms have been used.
A) Technical examinations
B) Legal proceeding
C) Field investigations
D) Terminal penetration
- 47. of ballistics exhibits are conducted by the firearms examiners in the
ballistics laboratory to determine the value of firearms exhibits in the solution of the case.
A) Field investigations
B) Technical examinations
C) Legal proceeding
D) Terminal energy/striking energy
- 48. it includes making of a ballistics report and presentation of the result of the examination conducted before the court.
A) Terminal penetration
B) Legal proceeding
C) Field investigations
D) Technical examinations
- 49. the diameter of a barrel of a shotgun is the same throughout the bore. The bore of the gun is
sometimes constricted near the muzzle end. That is, the diameter near the muzzle end is slightly smaller than the diameter of the bore of the rest of the barrel. The amount of spread in the shot is controlled by the choke. Itvis categorized by:
A) Quarter Choke
B) Choke
C) Half Choke
D) Improved Choke
- 50. bore constriction is reduced by one-half mm.
A) Half Choke
B) Full Choke
C) Improved Choke
D) Quarter Choke
- 51. bore constriction is reduced by ½ mm.
A) Improved Choke
B) Half Choke
C) Quarter Choke
D) Full Choke
- 52. bore constriction is reduced by about 1/10 mm or about 50 percent of shots.
A) Full Choke
B) Quarter Choke
C) Modified Choke
D) Improved Choke
- 53. it will deliver about 60 percent.
A) Quarter Choke
B) Improved Choke
C) Half Choke
D) Modified Choke
- 54. shotgun pellets made from lead especially hardened by the addition of a slight amount of
antimony.
A) Gunshot Wound
B) Chilled Shot
C) Wound Ballistics
- 55. It refers to the study of the effects of a projectile on a target and the conditions that affect
it.
A) Chilled Shot
B) Gunshot Wound
C) Wound Ballistics
- 56. it is an open wound produced by the penetration of a bullet slug within the tissues
of the body. The bullet that was propelled from the gun as well as the flame from the heated expanded gases in
short-range fire is the one that produces injury.
A) Wound Ballistics
B) Gunshot Wound
C) Chilled Shot
- 57. an injury in which an object enters the body or a structure
and passes all the way through. The wound has an entrance and exit.
A) Wound Ballistics
B) Gunshot Wound
C) Penetrating Wound
D) Perforating Wound/Transfixing Wound
- 58. the injury implies that the object does not pass through. It only has an entrance wound; therefore, the bullet can be found inside the body and is a source of firearm identification.
A) Perforating Wound/Transfixing Wound
B) Penetrating Wound
- 59. gun muzzle pressed against, or within an inch or two, of the body
A) Close discharge
B) Contact
C) Distance Discharge
A) Distance Discharge
B) Contact
C) Close discharge
A) Distance Discharge
B) Close discharge
C) Contact
- 62. caused by absorbed carbon monoxide in the skin and flesh.
A) Contusion
B) Pink Coloration
C) Foreign Materials
D) Dirt Ring
- 63. deposited by some projectile (which carry greases on them) around the wound. The
existence of this indicates the entrance side of a firearm injury & does not indicate the range
A) Pink Coloration
B) Foreign Materials
C) Dirt Ring
D) Contusion
- 64. caused by the impact of the projectile (reddish-dark to bluish-black - varies somewhat
with the age of the injury). It takes the form of a belt around the wound. It is uniform in thickness.
A) Dirt Ring
B) Foreign Materials
C) Contusion
D) Pink Coloration
- 65. Their presence not only permits the identification of the firearms injury but they also permit a fairly reliable guess of the firearm
A) Pink Coloration
B) Dirt Ring
C) Contusion
D) Foreign Materials
- 66. The higher the power the weapon is more destructive to the tissues of the body.
A) Shape and composition of the missile
B) Kind of weapon
C) Range of fire
D) Caliber of the weapon
- 67. The higher the caliber of the wounding bullet, the greater the size of the wound of entrance, hence, greater destruction to the tissues.
A) Range of fire
B) Caliber of the weapon
C) Kind of weapon
D) Shape and composition of the missile
- 68. The conical-shaped free end of the bullet slug has more
penetrating power but less tissue destruction, while the bullet slug with a hemispherical free end has
less penetrating but more destruction to the tissues.
A) Range of fire
B) Caliber of the weapon
C) Shape and composition of the missile
D) Kind of weapon
- 69. the injury is not only due to the missile but also due to the pressure of the heated
expanded gases, flame and articles of gunpowder. However, in long range fire, the characteristic effect
of the bullet alone will produce the injury. It may include:
A) Shape and composition of the missile
B) Caliber of the weapon
C) Range of fire
D) Kind of weapon
- 70. indicates contact wound and is often observed in suicide cases. The whole
charge (projectile, wads, if any, smoke, unburnt or semi-burnt powder particles and hot gases)
enters into the target. No burning, blackening and tattooing are observed. Instead, they are
observed inside the hole through careful examination. The edges are found ragged (torn in a
star shape and the wound is like an exit wound.
A) Muzzle Pattern
B) Blackening
C) Tattooing
D) Scorching
- 71. caused by the flame or hot gases not by the hot projectiles as is commonly
believed. It is also known as burning or charring.
A) Muzzle Pattern
B) Blackening
C) Scorching
D) Tattooing
- 72. caused by the deposition of smoke particles by all types of powders at close ranges. Being light particles, they soon lose their velocity and get deposited on any material
available in the path.
A) Blackening
B) Tattooing
C) Scorching
D) Muzzle Pattern
- 73. caused by the embedding of unburnt and semi-burnt powder particles
into the surface of the target. These particles are slightly heavier than the smoke particles. They
retain motion to somewhat longer intervals and consequently cause tattooing to a distance of
about one and a-half times blackening range.
A) Tattooing
B) Scorching
C) Muzzle Pattern
D) Blackening
- 74. A right angle approach of the bullet to the body will produce a round shape wound of
entrance in short distance fire, while in acute angle of approach, the bullet will produce an oval shape
wound of entrance with contusion collar widest on the side of the acute angle of approach and a
tendency for the bullet to deflect to another direction upon hitting the target.
A) Part of the body involved
B) Direction of fire
C) Range of fire
D) Shape and composition of the missile
- 75. When the bullet hits the soft tissues of the body; the bullet penetrates and
usually without any change in direction, however upon hitting the bones and other hard body structures the bullet may fracture the bones causing further injury or may deflect to another direction
A) Part of the body involved
B) Range of fire
C) Caliber of the weapon
D) Direction of fire
- 76. was developed in
the 14th century as a simple
smooth-bore tube of iron, closed at the breech end except for an opening called
a touchhole and set into a rounded piece of wood for holding under the arm. The tube was loaded with shot and powder and then fired by inserting a heated wire into the touchhole.
A) fire-lance
B) firelock
C) Wheel lock
D) matchlock
- 77. was
developed about 1515. It consisted of a spring-driven wheel
which when released by the trigger brought a piece of iron pyrite into
contact with a rotating steel wheel which sparks and ignites the
gunpowder.
A) Wheel lock
B) matchlock
C) firelock
D) fire-lance
- 78. have no riflings (lands and grooves) inside the gun barrel.
A) Rifled-bore firearms
B) Smooth-bore firearms
- 79. can propel projectiles more than one inch in diameter. E.g. cannons, mortar, bazookas
A) Small arms
B) Artillery
- 80. firearms that have riflings (lands and grooves) inside their gun barrel
A) Rifled-bore firearms
B) Smooth-bore firearms
- 81. can propel projectiles less than one inch in diameter. E.g. machine gun, shoulder arms, and hand arms.
A) Small arms
B) Artillery
- 82. fire only one shot every loading which has to be reloaded for each shot. The
breech needs to be opened to remove the empty cartridge case and to insert a new one for the next firing
A) Repeating Arms
B) Single shot Firearms
C) Bolt action type
D) Automatic loading type
- 83. it fires several shots in one loading. It is divided into two types, namely;
A) Single shot Firearms
B) Bolt action type
C) Automatic loading type
D) Repeating Arms
- 84. these firearms are provided with a box magazine under the bolt, but some of them
have a tubular magazine. The breech block is shaped like an ordinary door bolt with a handle sticking
out to one side of the firearm. When the bolt is locked to the breech of the barrel and when it is turned
up, it unlocks the bolt and is then drawn to the rear, extracting the fired cartridge case and finally
bringing it against the ejector which throws it out of the gun. Reloading is done by manipulation of the bolt.
A) Bolt action type
B) Slide action type
C) Automatic loading type
D) Lever type
- 85. after the first shot is fired, automatic loading or chamber takes place as long
as the trigger of the gun is squeezed by the shooter.
A) Automatic loading type
B) Single shot Firearms
C) Slide action type
D) Repeating Arms
- 86. loading takes place by back-and-forth manipulation of the under the forearm of the gun. Under the barrel there is a tubular magazine for the extra cartridge.
A) Single shot Firearms
B) Repeating Arms
C) Slide action type
D) Lever type
- 87. the trigger guard of this firearm is hinged at the front end, which is
connected with a breech mechanism. After firing, the finger lever is moved downward so as to cause
the trigger guard to pivot on its hinge, and its forward extension is to move back. Loading and ejection of the cartridge case take place by the lever action of the firearm.
A) Automatic loading type
B) Lever type
C) Bolt action type
D) Slide action type
- 88. the cycle of operation is accomplished. Ex. Springfield
A) Recoil Operated
B) Gas Operated
C) Blow back Operated
D) Manually Operated
- 89. firearms that have a gas cylinder and piston. They used to trap gas to push the bolt assembly backwards to achieve a complete cycle of operation. Ex. M16, M14
A) Gas Operated
B) Recoil Operated
C) Blow back Operated
D) Manually Operated
- 90. the barrel and bolt move rearward with the momentum generated as the result of an opposite reaction from the forward movement of a bullet mass moving down the bore at a high velocity.
It is divided into
A) Manually Operated
B) Gas Operated
C) Blow back Operated
D) Recoil Operated
- 91. characterized by a heavy bolt. It has no locking or unlocking mechanism inertia, or bolt and a recoil spring holds the breech closed.
A) Manually Operated
B) Blow back Operated
C) Recoil Operated
D) Gas Operated
- 92. fire continuously as long as the trigger is pulled Ex. M60 & Ultimax
A) Selective
B) Automatic
C) Semi-Automatic
D) Single
- 93. one pull of the trigger would produce one round explosion. The trigger must be released first before one can fire another round. The cycle of operation is done automatically.
A) Automatic
B) Single
C) Selective
D) Semi-Automatic
- 94. one trigger pulls for a single round. The cycle of operation is done manually.
A) Selective
B) Single
C) Semi-Automatic
D) Automatic
- 95. this fires either on automatic or semi-automatic by using the selector level
A) Selective
B) Semi-Automatic
C) Automatic
D) Single
- 96. designed to be fired by at least one hand
A) Hand weapon
B) Crew-Serve Weapon
C) Shoulder Weapon
- 97. designed to fire from the shoulder.
A) Crew-Serve Weapon
B) Shoulder Weapon
C) Hand weapon
- 98. designed to be operated by two or more persons
A) Crew-Serve Weapon
B) Hand weapon
C) Shoulder Weapon
- 99. ammunition is fed through the muzzle
A) Magazine Fed
B) Clip Fed
C) Muzzle Fed
- 100. ammunition is loaded with the use of a clip that holds several rounds of ammunition.
A) Muzzle Fed
B) Magazine Fed
C) Clip Fed
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