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