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Clay comes from decomposed what?
rock
Clay is a combination of alumina, silica, and what?
water
Physically, the crystal structure of clay resembles what?
deck of wet playing cards
Glaze is a glassy surface covering that makes a pot
waterproof
Chemically, glaze contains silica, alumina, and what?
flux
What causes the glaze ingredients to form a glass?
heat
What is the process of adding heat to ceramics material called?
firing
The object used to fire ceramics projects is called what?
kiln
True or False ? The atmosphere of the kiln dictates the color or clay and glaze?
true
How many firings are there usually?
2
What is the process of joining clay together called?
score and slip
When working with clay, slip is like what other material used in art?
glue
Scoring clay is when you do what to it?
give it texture
When clay is easily moldable it is said to be what?
plastic
Clay that is good for carving is in what stage?
leather hard
Clay that is ready to be fired is called bone dry or what?
greenware
