Origins and types of Clay Flashcards

1
Q

What is the earths crust made out of?

A

Feldspar

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2
Q

What are the 6 characteristics of secondary clay?

A

color varies, has impurities, small in size, plasticity varies, firing temp varies, and opaque

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3
Q

How does residual clay become a secondary clay?

A

natural forces weathering and transporting the clay, it has picked up impurities that changed the clay to secondary

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4
Q

What are the 3 clay’s used by potters?

A

Earthenware, stoneware, and porcelain

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5
Q

What are some characteristics of Earthenware?

A

Low firing temp, fragile, porous, varies in color and plasticity

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6
Q

What are some characteristics of Stoneware?

A

medium firing temp, not fragile, non-porous, vitrified when fired to maturity, varies in color and plasticity

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7
Q

What are some characteristics of Porcelain?

A

High firing temp, white, hard not fragile, translucent, non-plastic, no impurities

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8
Q

Whats does Transparent mean?

A

see through

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9
Q

Whats does Translucent mean?

A

can not see through, light pass through

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10
Q

Whats does opaque mean?

A

light can not pass through

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11
Q

Whats does plasticity mean?

A

malleable

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12
Q

Whats does igneous mean?

A

produced by the action of fire

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13
Q

Whats does porous mean?

A

full of holes (water can go through)

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14
Q

Whats does residual mean?

A

leftover

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15
Q

Whats does vitrify mean?

A

become glass-like

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16
Q

What happened in 20,000 BC?

A

clay sculptures were made for story telling

17
Q

What happened in 9,000 BC?

A

Colored slip was introduced in Japan

18
Q

What happened in 6,000 BC?

A

In the middle East controlled firing was developed

19
Q

What happened in 4,500 BC?

A

in Mesopotamia using oxidation/reduction to affect color

20
Q

What happened in 4,000 BC?

A

Writing on clay tablets

21
Q

What happened in 2,500 BC?

A

First glaze found in Egypt