Forensics - Arson

An accelerant is made from

• Pyrolysis

• Fuel

• Hydrocarbons

• Substrates

What is a Substrate Control

• a similar, but uncontaminated, sample; used for making comparisons

• any material used to start or sustain a fire

• a compound consisting of only hydrogen and carbon

• a type of burn pattern

What form are most accelerants in?

• Solids

• Combustible Liquids

• Liquids

• Gases

Which of the following tools is used by investigators to locate accelerants in a house fire?

• Gas Chromatographer

• Mass Spectrometer

• Vapor Trace Analyzer

• Carbon monoxide detector

The proper way to store accelerants collected at a crime scene is in a

•  Sealed plastic bag

• Wooden box

• Sealed plastic bottle

• Sealed glass jar

Which of the following is not an accelerant?

• Lighter

• Alcohol

• Paper

• Gasoline

Normal CO concentration levels in the air are closest to

• <5%

• 10%

• 20%

• 35%

Tags

NGSS.HS-PS1-5

The head of a match is composed primarily of what compounds?

• potassium chlorate

• red phosphate

• sodium chloride

• powdered glass

A person loses consciousness and can die when CO levels reach

• 20%

• 35%

• 50%

• 75%

What two questions do investigators attempt to answer about a house fire to determine if it is an arson case?

• Who started it and why?

• Where did it start and was it incendiary?

• Who started it and where did it originate?

• What caused it and who witnessed it?