Regular Crime Scenes

How are fire scenes different than regular crime scenes for investigators? What is the blast effect?
The blast effect is the gasses rushing out from the explosion’s center. What are the two types of high explosives?
Primary explosives ( highly flamible)
Secondary explosives (needs something else to start it)
What is a substrate control? Why is it done?
A substrate control is an uncontaminated sample (control) so they have something to compare the contaminated sample to. How is the evidence from a fire scene collected? What should be avoided? Materials collected from a fire scene are placed in air-tight containers to prevent the further loss of any flammable liquid evidence. Plastic bags are usialy avoided because the material can interact with any flammable liquid left and become haserouds. Critical Thinking Questions

What do you think would be the most challenging part of investigating a fire or explosion crime scene? Why? I think the most challenging part would be finding the trigger for instince a phone bomb could be activiated by anyone even by accedent. Do you think search warrants should be required for fire scenes? Why or why not? I think they should be required because someone might have something in thare that is personal that survied. Do you think more countries should adopt the practice of putting color coded chips in explosive materials? Why or why not? Yes because terrorism might go down.

Why do you think crime scenes involving homemade bombs have increased? I think it has increased because it has ben getting easier to biuld them. Why do you think the procedures are different from normal crime scenes to those involving fire and explosions? What benefits or challenges are there because of these different procedures? I think they are diferent because the one with explosions is more dangerious.