How to blow glass
  • 1. What is the primary material used in glassblowing?
A) Plastic
B) Molten Glass
C) Metal
D) Clay
  • 2. What is the name of the long, hollow pipe used to gather molten glass?
A) Punt
B) Blowpipe
C) Shears
D) Marver
  • 3. What is the approximate temperature at which glass is workable for blowing?
A) 3000°F (1649°C)
B) 2000°F (1093°C)
C) 1000°F (538°C)
D) 500°F (260°C)
  • 4. What is the process of rolling the molten glass on a flat surface called?
A) Annealing
B) Shaping
C) Gathering
D) Marvering
  • 5. What is the purpose of annealing?
A) Add color
B) Make the glass more brittle
C) Increase the melting point
D) Relieve internal stresses
  • 6. What type of furnace is used to melt glass?
A) Oven
B) Microwave
C) Glory Hole
D) Kiln
  • 7. What is a punt?
A) A tool for cutting glass
B) A solid metal rod used to hold the glass
C) A coloring agent
D) A type of glass
  • 8. What tool is commonly used for shaping and opening the glass?
A) Hammers
B) Tweezers
C) Jacks
D) Screwdrivers
  • 9. What is a 'gather' in glassblowing?
A) A broken piece of glass
B) A finishing technique
C) A type of furnace
D) A blob of molten glass collected on the blowpipe
  • 10. Which safety precaution is most important in glassblowing?
A) Ear protection
B) Open-toed shoes
C) Gloves
D) Eye protection
  • 11. What is the purpose of a reheating chamber (glory hole)?
A) To cool the glass quickly.
B) To add color to the glass.
C) To keep the glass workable.
D) To polish the glass.
  • 12. What does 'cold working' refer to?
A) Rapidly cooling glass
B) Working with cold glass
C) Working in a cold environment
D) Modifying glass after it has cooled
  • 13. Which of these is a common glassblowing technique?
A) Water casting
B) Laser cutting
C) Cold welding
D) Off-hand blowing
  • 14. What is the chemical composition of soda-lime glass?
A) Clay, water, and fire
B) Plastic, sand, and salt
C) Metal, carbon, and iron
D) Silica, soda ash, and lime
  • 15. What is the purpose of compressed air in glassblowing?
A) To clean the workshop.
B) To cool the tools.
C) To inflate the glass bubble.
D) To heat the glass.
  • 16. What is 'striking' in the context of glass coloring?
A) Adding color to the glass
B) Removing color from the glass
C) Developing the color through heat treatment
D) Mixing different colors of glass
  • 17. What is the term for adding small pieces of colored glass (frit) to molten glass?
A) Murrine
B) Inclusion
C) Fritography
D) Layering
  • 18. What does 'devitrification' refer to?
A) The process of glass melting.
B) The process of glass becoming stronger.
C) The process of glass becoming clear.
D) The process of glass becoming crystalline.
  • 19. What is 'slumping'?
A) A method of cleaning glass.
B) A type of glass color.
C) Shaping glass using gravity and heat.
D) Breaking glass intentionally.
  • 20. What is the main difference between soft glass and borosilicate glass?
A) Borosilicate has a lower coefficient of expansion.
B) Soft glass melts at a lower temperature.
C) They're the same thing.
D) Soft glass is more durable
  • 21. What is a 'cane' in glassblowing?
A) Rods of colored glass used to create patterns
B) A safety device
C) A mold for shaping glass
D) A type of glass cleaner
  • 22. Which of these is NOT a common glassblowing tool?
A) Block
B) Soldering Iron
C) Tweezers
D) Diamond Shears
  • 23. What is 'color flashing'?
A) Rapidly changing the color of glass
B) Applying a thin layer of colored glass over clear glass
C) Heating glass to make it flash
D) Cleaning glass to make it shiny
  • 24. What is the function of a 'Yoke'?
A) Cleans the glass
B) Heats the glass
C) Cuts the glass
D) Supports the blowpipe
  • 25. Why is it important to keep the blowpipe rotating?
A) To make the glass stronger
B) To maintain even distribution of glass
C) To prevent the glass from cracking
D) To make the glass shinier
  • 26. What is 'iridizing'?
A) Removing color from glass
B) Making glass transparent
C) Strengthening the glass
D) Creating a metallic, rainbow-like effect on the surface of glass
  • 27. What type of gloves are generally recommended for glassblowing?
A) No gloves are needed
B) Heat-resistant gloves
C) Leather gloves
D) Latex gloves
  • 28. What is a 'bit' in glassblowing?
A) A broken piece of glass
B) A small piece of glass added to the main form
C) A type of tool
D) A type of colorant
  • 29. What is the benefit of using borosilicate glass over soda-lime for certain applications?
A) Cheaper
B) Higher thermal shock resistance
C) Brighter colors
D) Easier to melt
  • 30. What is a 'muster' in glassblowing terminology?
A) A type of mold
B) A tool to measure the heat of the glass
C) The process of cleaning a furnace
D) A detailed plan or design for a glass piece.
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