ceramics quiz

igneous

produced by fire

sedimentary

deposited by water

residual

left over, remaining

impurities

added, not pure

transparent

see through

translucent

only some light is able to pass through

opaque

NO light passing through

plasticity

holding form or shape

porous

full of holes

vitrify

to become glass like

what happened in 30,000 BCE

first use of clay

9,000 BCE

first firing of clay

6,000 BCE

1st use of colors

4,500 BCE

1st controlled firing

4,000 BCE

writing of clay tablets

2,500 BCE

glazing wheel use

6 characteristics of primary clay

White, free from impurities, porcelain, translucent, large particle size, non-porous

6 characteristics of secondary

not found where formed, numerous impurities, opaque, small particle size, vary in porosity, vary in color

3 clays commonly used by studio potters

porclein, earthenware, stoneware

what is the earths crust mainly made of

primary/residual clay

where are residual and sedimentary clays found

residual: found where formed, sedimentary: not found where formed

how are the 3 common clays different from eachother

porclein: primary, earthenware: fragile, secondary, low firing temp, stoneware: secondary. high firing temp, strong

how are translucent, transparent, and opaque different

translucent: see through, opaque: NO light passing, opaque: SOME light able to pass