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exam 5 > IEDs > Flashcards

IEDs Flashcards

1
Q

What are the 3 effects of an explosion?

A
  1. Thermal
  2. Blast pressure
  3. Fragmentation
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2
Q

what generally plays an insignificant part in an explosion and is least damaging of the 3 primary effects of an explosion?

A

Thermal effect

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3
Q

What is the most powerful and destructive effect produced by detonation of an explosive?

A

Blast pressure effect

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4
Q

Blast pressure waves can reflect with an amplification of up to __________, due to the supersonic velocity of the shock wave at impact.

A

Thirteen

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5
Q

What are primary effects of blast injuries caused by

A

the direct effect of blast pressure waves on the body

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6
Q

What are secondary effects of blast injuries caused by?

A

propelled fragmentation or debris

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7
Q

T or F? Secondary injuries are the most common cause of death in IED explosions?

A

True

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8
Q

What PSI do eardrums rupture at?

A

5psi

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9
Q

What psi is fatal injury threshold?

A

35psi

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10
Q

What causes a high incidence of casualties with secondary blast injuries when blasts occur in urban areas?

A

broken glass

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11
Q

What is the most deadly effect from an explosion?

A

Fragmentation effect

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12
Q

What fragments are produced by the IED or explosive container called?

A

Primary fragmentation

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13
Q

What are objects propelled from around the detonation point, and fractured pieces of the intended target that become lethal missiles called?

A

secondary fragmentation

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14
Q

What is PIES?

A

Power Source
Initiators
Explosives
Switches

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15
Q

What is the difference between low explosives and high explosives?

A

Low explosives require confinement to detonate, they deflagrate otherwise.

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16
Q

What is used in about 45% of all bombing incidents, largely because of the availability of the components and ease of construction?

A

Pipe bombs

17
Q

What are the 3 primary methods of initiation?

A
  1. timed
  2. Victim-operated (booby trap)
  3. Command
18
Q

What are the most commonly used vehicles worldwide for VBIEDs?

A

Panel vans and SUVs

19
Q

What are 3 primary VBIED methods of initiation?

A
  1. timed
  2. command
  3. suicide
20
Q

what are the principal explosive used as the main charge in VBIEDs?

A

Homemade ammonium nitrate and urea nitrate-based explosives

21
Q

2 main precursors for homemade explosives?

A

ammonium nitrate and urea nitrate available worldwide as fertilizers

22
Q

What are some locations for explosives in VBIEDs?

A
  1. Passenger compartment
  2. Trunk
  3. Cargo area

exam 5 (8 decks)

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