08.08 Module 8 Exam (100%)

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True or False. Low explosives are relatively difficult to obtain and are used less frequently in homemade bombs than high explosives.

False

Investigators pull out a sniffer to use at the scene of a fire. What is the sniffer designed to do?

Find vapor from flammable liquids

The outward blast effect from the bomb's site of origin can be as fast as

7000 miles per hour

Investigators are looking for the igniter used at their crime scene. Which igniter is most likely to leave evidence behind for investigators to discover?

A Molotov cocktail

True or False. An accidental fire that started from a cigarette would leave distinct forensic evidence of how the fire started.

False

Investigator Hayes works in a forensic lab. He has just received a batch of evidence from the scene of a bombing. How would Investigator Hayes go about analyzing the new evidence?

He would examine the evidence under a microscope to identify the materials.

Why is TNT classified as a secondary explosive?

It must be ignited using other explosive materials.

Why are warrants not required to investigate a fire scene?

It's important to know where a fire started and if it could flare up again

Which kind of explosive is best for propelling a rocket?

Low explosives

Investigator Campbell is in charge of the forensics lab. One of the analysts in the lab ended up with contaminated evidence from the scene of an explosion. Looking through their work area, she sees they have a very small table next to a sink with small nylon bags stored in tight rows at room temperature. What would she advise the analyst to change about their evidence system?

The bags can't be kept so close together.

True or False. Molotov cocktails may leave behind pieces of the glass bottle or the wick used to ignite the gasoline.

True

True or False. One tool to help investigators find a detonating mechanism in the debris around an explosion is a wire mesh screen.

True

True or False. Petroleum-based accelerants typically evaporate within days and sometimes even within hours.

True

During an arson investigation, Investigator Martinez collects evidence near the scene of the fire. Which of the following things he collected is an example of a substrate control sample?

Unburnt wood flooring near the scene of the fire

Since explosive material can be very difficult to identify, manufacturers are considering adding

color-coded chips to the explosive material


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