Forensic Science
Unit 3: Text Questions
Review Questions
1. Physical Evidence, Documentary Evidence, Demonstrative Evidence, and Testimony Evidence.
2. Individual Characteristics are properties associated with a common source to a high degree of certainty. For example, a forensic scientist may look it in criminal case through the ridge characteristics of two fingerprint samples.
3. Individual Characteristics are properties associated with a common source to a high degree of certainty, and Class Characteristics are those that can be associated with a group.
4. Physical Properties are those that describe ab substance or object without referring to any other substance. For example physical properties of glass, its weight, size, color, and volume. Chemical properties are those that describe what happens when a substance reacts with another substance. For example, when the drug heroin comes to contact with Marquis Reagent chemical it turns purple.
5. Forensic Scientist collect the soil at a 100-yards radius from the crime scene, then the forensic scientist collect soil from the surface, because if it is taken deeper the soil may show changes.
Critical Thinking Questions
1. If forensic scientist weren’t careful with their work, there could be contamination and ruin of the evidence. If that happens then the suspect could get away.
2. I think that physical evidence is the most important because it is tangible evidence. Weapons, hair, blood, fibers, and fingerprints. It is also the evidence that is tested in the lab
3. Because it helps investigators put the evidence together, especially in the courtroom.
4. The challenging part about collecting impressions is that it can be detailed and sometimes hard to detect.
5. If I was a jury I would expect individual characteristics because it is evidence put for display, as known as proof.