Across
- 4. sand often used in clay bodies
- 6. body made from clay, fluxes, hardeners and openers
- 9. pots and other articles made from clay hardened by heat
- 10. expansion the tendency of matter to change its shape, area, volume, and density in response to a change in temperature
- 12. derived from or containing glass
- 13. shrinkage comparative indicator of the degree of vitrification
- 14. a fault that can occur during the firing of ceramic
- 15. used in pottery and sculpture to add a gritty, rustic texture, it reduces shrinkage and aids even drying
- 16. a mineral form of silica powder used in ceramic glazes and clay bodies
- 17. The practice of holding the kiln at final firing temperature for a period of time
- 19. a micro crystalline form of quartz and is a completely different physical appearance
Down
- 1. the state of being thick, sticky, and semi fluid in consistency, due to internal friction
- 2. consists of the three mineral types- clay, silica, and feldspar
- 3. tension the tendency of liquid surfaces to shrink into the minimum surface area possible
- 5. having the structure and form of a crystal
- 7. the material that acts as a hardener
- 8. action it collapses the porosity and bonds the unmelted ceramic particles to each other by making a eutectic system
- 11. a crystalline form of silica
- 16. inversion the sudden volume change in crystalline quartz particles experience as they pass up and down through 573C.
- 18. alters the vitrification of the clay