Forensic Ballistics Topicwise Questions || Part-6

Forensic Ballistics Topicwise Questions

Q1. A gigantic bow or catapult which was used to hurl objects such as stones at particular animals or enemy forces?

A) Catapult

B) Balle

C) Bavein

D) Ballista

Answer: Ballista

Explanation: The word ‘Ballista’ is a greek word,also called as bolt thrower,was an ancient missile weapon that launched either bolts or stones at a distant target.

Q2. The tumbling of the bullet in its flight and hitting the target sideways a result of not spinning on its axis.

A) Key-hole shot

B) Back shot

C) Mid range trajectory

D) Point blank

Answer: Key-hole shot

Explanation: Keyhole is a sign that the bullets are not being stabilized properly. An unstable,bullet is undesirable because it flies unpredictably in the air and therefore affects the accuracy of firearm. If the target is too close, the bullet still wobble in the air a bit, by the time it hits the target and cause damage to the nearby area of target also.

Q3. The noise created at the muzzle point of the gun due to the sudden escape of the expanding gas coming in contact with the air in the surrounding atmosphere at the muzzle point.

A) Muzzle blast

B) Muzzle energy

C) Range noise

D) Fire power

Answer: Muzzle blast

Explanation: Projectiles produce initial impulse from the muzzle blast with a shock wave traveling radially outward perpendicular to the path of the supersonic projectiles.

Muzzle blast generated by discharge is directly proportional to the amount of propellant contained within the cartridge.

Subsonic projectiles emit a shock wave that carries after the muzzle blast.

Q4. The way the bullet actually flies through the air,including the overall mass,air drag,drop and wind drift.

    A) Internal ballistics

    B) Terminal ballistics

    C) Impact ballistics

    D) External ballistics

  Answer: External ballistics

 Q5. What is the actual curved path of the bullet during its flight from the gun muzzle to the target?

A) Yaw

B) Accuracy

C) Trajectory

D) Velocity

 Answer: Trajectory 

 Explanation: The word “Yaw”was discovered by Wright Brothers which refers to rotation of the bullet away from line of flight,which results from excessive spin of the bullet.

Q6. What do you call the depth of entry of the bullet in the target?

A) Terminal velocity

B) Terminal penetration

C) Terminal ballistics

D) Terminal power

 Answer: Terminal penetration

Explanation: Terminal penetration relates to the interaction between a projectiles penetration and a target. The penetrator is the part of the projectile which digs into the target,inflicting damage to the target.

Q7. The term “corning” in gunpowder is used to describe.

A) Process of altering the burning rate

B) Process of making gunpowder

C) Process of adding additives

D) Process of adding other major components to make them effective to fire

Answer: Process of altering the burning rate

Explanation: Corning is the process of altering the burning rate of gunpowder by compressing it into cakes,crushing and grinding it again,then screening by grain size. In general observation,with each successive corning the powder performance increases.

Q8. The most commonly used material for making unjacketed bullets is.

A) Antimony

B) Lead

C) Tin

D) Casting iron

Answer: Lead

Explanation: Lead is dense in nature that means it is heavy for its volume.Heavier bullets travel more accurately,hence lead expands when it makes contact and penetrates a target.When a lead bullet is cast,it shrinks in a uniform manner as it cools,which makes easier to develop a mold.

Q9. Which material is used in bullet proof vests?

A) Bakelite

B) Kevlar

C) Melanin resin

D) PMMA

Answer: Kevlar

Explanation: Kevlar is a strong heat resistant synthetic fiber related to aromatic polyamide developed by Stephanie Kwolek.The sheets were assembled into ballistics panels which were sewn into a carrier in the form of a vest.

Q10. Stellate wounds may be seen in which of the following bullets from entry wounds.

A) Distant shot

B) Two feet distance

C) Contact shot

D) Close shot

Answer: Contact shot

Explanation: In contact shot wound with bony tissues underlying the injury,the typically called stellate wound,where the gasses exit the barrel before the projectile. As a result, with the bone tissues collides with the bone tissue,resulting in the reflection of gases. The gas causes expansion of subcutaneous space and pressure,which results in explosive injury,tearing and laceration the skin and resulting the tissues in stellate wound.