Red Seal Glazier Practice Exam

What defect is characterized by irregularities in the surface of glass?

1. Bubbles

2. Waves

3. Distortions

4. All of the above

The correct answer is: All of the above

The defect characterized by irregularities in the surface of glass can indeed be described by all of the mentioned options: bubbles, waves, and distortions. Bubbles refer to trapped air or gas pockets within the glass, which create irregularities on the surface. These can affect both appearance and optical clarity, as they create visual distractions. Waves are variations in the surface that give a wavy look to the glass. This can be due to imperfections in the glass manufacturing process, where the glass does not lie completely flat or level, leading to undulating surfaces. Distortions encompass a broader category, including any deviation from the expected flatness or optical clarity of the glass. This can include waves and bubbles as well as other surface imperfections that affect the overall quality and aesthetics of the glass. Since all these defects contribute to the irregularities in the surface of the glass, it is accurate to say that all of the above are correct answers to the question regarding surface defects.