Forensic Science - Ballistics, Arson & Explosives

Rifling is added to the gun barrel to make the bullet...

• Go faster
• Go farther
• Tumble
• Spin

The cartridges in a revolver are held in the...

• Cylinder
• Magazine
• Barrel
• Breech

Which of the following parts of a cartridge is affected by the gun barrel?

• Bullet
• Cartridge casing
• Primer
• Propellant

Which of the following revolver gun parts will leave distinct toolmarks on the cartridge casing?

• Magazine
• Firing pin
• Gun barrel
• Ejector

Which of the following is used to match a test-fired bullet’s striations to those of a bullet recovered from a crime scene?

• Electron microscope
• Infrared microscope
• Comparison micoscope
• Gas chromatograph

Solid fuels are not flammable. Which of the following is the process by which a solid fuel, such as wood or charcoal, decomposes in the presence of high temperature and releases flammable vapors?

• Decomposition
• Pyrolysis
• Flammability
• Burnability

Which of the following is the best definition of the flash point of an accelerant?

• A.  The temperature that an accelerant flashes and burns.
• A.  The temperature that an accelerant reacts with oxygen.
• A.  The temperature that an accelerant begins to vaporize.
• A.  The temperature than an accelerant ignites.

Which of the following is the correct name for the arson analysis method that involves using a charcoal-coated strip and low heat over a long period of time?

• Direct headspace extraction
• Passive headspace extraction
• Headspace charring
• Headspace heating

Which of the following burn patterns are connected by thin trails and does indicate the use of an accelerant?

• Classic V
• Inverted cone
• Streamer
• Arc damage

Which of the following type of explosive is best characterized as producing pressure waves that travel up to 19000 mph, are very unstable, and are primarily used to detonate other explosives?

• Low explosives
• High explosives
• Primary high explosives
• Secondary high explosives