What type of evidence includes items that can physically be analyzed?

Real or physical evidence consists of tangible items that can be scientifically examined, measured, or tested. This type of evidence is critical in fire investigations, as it allows forensic experts to analyze materials such as accelerants, debris, or any physical artifacts from a fire scene that can provide insights into the incident's origin and cause. The ability to collect and analyze this evidence helps establish factual information, supporting or refuting hypotheses related to how the fire started and developed.

Testimonial evidence relies on witness accounts and statements, which do not provide the same level of physical analysis as real evidence. Documentary evidence pertains to written or recorded materials that convey information but again lack the capacity for direct physical analysis. Demonstrative evidence is often used to illustrate or clarify an aspect of a case, like models or charts, but does not consist of physical objects that can be examined in the same way. Thus, the focus on real or physical evidence highlights its importance in forensic investigations, where physical properties and analyses play a crucial role in solving cases.