Across
- 2. Chemically, when oxygen combines with another element.
- 3. The action of natural forces like wind, water, and ice that causes mountains to crumble and disintegrate into rocks, sand, dirt, and finally clay.
- 7. Clay that has been transported from its original rocky location by the action of wind and water.
- 9. A refractory clay most often used to make firebricks.
- 11. A very fine, extremely plastic clay.
- 13. A granite-type rock that makes up almost half of the earth's crust.
- 15. The natural process of chemical water molecules attaching to other mineral molecules.
- 16. A general term applied to white dinnerware that imitates porcelain but is usually fired at a temperature lower than porcelain.
- 17. Clay that is found in the same location where the parent rock disintegrated.
- 19. Another term for Primary Clay.
Down
- 1. An earthenware clay that is red when fired. Most often used as a sculptural medium.
- 4. One of the three general groups of clay. Hard, strong, nonporous and vitreous when fired.
- 5. Another term for Secondary Clay.
- 6. Also known as China clay. The purest of the natural clays. The basic clay used in porcelain clay bodies.
- 8. A surface clay used to make sun-dried bricks. Not fired.
- 10. One of the three general groups of clay. A low-fire clay, porous and soft after firing.
- 12. The two water molecules of the basic formula.
- 14. A very plastic clay that is usually white or light in color.
- 18. A material that aids or helps cause melting.
