Forensic Investigation of Explosions

What is the first step forensic investigators take when collecting explosion evidence at a crime scene?

• Analyzing the chemical composition of residues

• Securing the crime scene to prevent contamination

• Interviewing witnesses

• Photographing the scene

Which specialized tool is commonly used by forensic investigators to detect explosive residues?

• Gas chromatograph

• Microscope

• Metal detector

• Spectrophotometer

What is a major challenge forensic scientists face when analyzing explosion crime scenes?

• Lack of witnesses

• Residue degradation

• Excessive noise

• High temperatures

How do forensic scientists overcome the issue of evidence contamination at explosion sites?

• By using protective gear and clean tools

• By working quickly to collect evidence

• By interviewing multiple witnesses

• By using drones to survey the area

Which principle is applied by forensic scientists to analyze the impact of explosions?

• Law of Conservation of Mass

• Law of Conservation of Linear Momentum

• Law of Universal Gravitation

• Law of Thermodynamics

Tags

NGSS.HS-PS1-7

NGSS.HS-PS2-2

The Law of Conservation of Linear Momentum can be expressed mathematically as:

Tags

NGSS.HS-PS2-2

What is the purpose of using a spectrophotometer in explosion investigations?

• To measure the size of debris

• To identify chemical compounds in residues

• To detect metal fragments

• To photograph the crime scene

Why is it important to photograph the explosion crime scene before collecting evidence?

• To create a visual record for legal proceedings

• To identify potential witnesses

• To measure the temperature of the site

• To determine the time of the explosion

Which of the following is a technique used to prevent residue degradation at a crime scene?

• Storing samples in airtight containers

• Using high-temperature analysis

• Conducting interviews immediately

• Using metal detectors

What role does the analysis of debris play in explosion investigations?

• It helps determine the type of explosive used

• It identifies the number of perpetrators

• It measures the sound of the explosion

• It calculates the speed of the blast wave