Certified Fire Investigator Practice Exam

What is the melting point of glass?

1. 338 F

2. 1221 F

3. 1000 F

4. 1350 F

The correct answer is: 1350 F

The melting point of glass typically ranges from about 1350°F to 1400°F, depending on the specific type of glass and its composition. This temperature is significant because glass is primarily made from silica (silicon dioxide), along with other additives that can either lower or adjust its melting point. When glass is heated to about 1350°F or higher, it begins to soften and can be molded or shaped before it ultimately melts. Understanding the melting point is important in fire investigations, as it can help in evaluating fire behavior and determining the duration and intensity of a fire based on the condition of glass found at the scene. In contrast, the other temperatures listed, such as 338°F, 1000°F, and 1221°F, are not typically representative of glass melting but may relate to different materials or degrees of softening of glass, emphasizing the importance of knowing accurate data in fire investigations.