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Terms in this set (28)
What was humanity's first great technological achievement?
When did firing clay become widespread?
When did glaze first appear, and what other event did it coincide with?
3,000 BCE and the earliest writing
Theories for first ceramic vessels?
Accidental firing - left mud pot in fire
Why were the first potters women?
Men were out hunting and women did domestic work at home
What are characteristics of residual clay?
1. formed on site
2. less common
3. less impurities
4. less plastic
5. white clay, porcelain
6. irregular particles
What are characteristics of sedimentary clay?
1. formed by transportation
2. more common
3. more impurities
4. more plastic
5. finer particles
What are 3 reasons we wedge clay?
1. homogenous consistency
2. increase plasticity
3. remove air bubbles
What is the difference between plastic clay and green clay?
Plastic clay is aged and in a workable state, whereas green clay is unaged and note very workable.
What are the three stages of greenware?
What is bisqueware?
Piece after initial firing, but before glaze
What is glazeware?
Piece after final glaze firing
What is impressing?
Pressing into plastic clay
What are forms of cutting and carving? What stage does the clay need to be in?
Incising and piercing; leatherhard
What are forms of applied surface texture? What Stages can the clay be in?
Applique (3D on form) or sprigging (shallow press molds, texture coils); plastic or leatherhard
What are some different kinds of pinch pots?
symmetrical, asymmetrical, near necked, close necked, closed form, multiple openings
What makes up the kiln furniture?
shelves and posts
What are slabs?
Thin, flat sheets of clay used to make angular or curvaceous forms
What are the 3 methods you can use to make a slab?
What are the 2 types of joints? Which one is stronger?
Overlap is the stronger joint (more surface area)
What is the difference between a butt joint and overlap?
A butt joint has two ends meet without overlapping and is reinforced with a coil, and overlap has clay moved over from one end to the other when joining
What is glaze? When did it first appear?
A thin glass like coating, 3,000 BCE
When did the first pottery appear?
When was there evidence of potter's wheel?
What are the differences between earthenware and stoneware?
Earthenware is low fire, cone 01 and colder, more porous, 2000* and lower. Stoneware is high fire, cone 01-cone 10, harder, vitrifies at 2000 or hotter
Why do we need the third ingredient, flux, in glazes?
To lower the melting point of the other two ingredients
Three ingredients found in glazes?
Flux, Alumina, and silica
What is vitrification?
Seals non porous, glass like, makes impermeable to liquids
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