WorksheetsGlazing Ceramics
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Glazes are a type of
a)
Glass
b)
Clay
c)
Paint
d)
Carving
2.
Percent of the Earth’s crust that is composed of silica
a)
40%
b)
50%
c)
10%
d)
60%
3.
Three basic ingredients of glazes:
a)
Clay, water, flux
b)
Grog, silica, iron
c)
Flux, glass former, refractory
d)
Refractory, water, clay
4.
About the temperature that is required to melt pure silica:
a)
1500 degrees
b)
1200 degrees
c)
4000 degrees
d)
3100 degrees
5.
Low-fire glazes don’t have a strong ____________ because they don’t melt enough:
a)
Interface
b)
Carbonates
c)
Oxide
d)
Color
6.
Materials usually added to glazes for coloring:
a)
A. Metallic oxides
b)
B. Carbonates
c)
C. oxygen
d)
A and B
7.
Chroma and hue are affected by:
a)
Brilliance and intensity
b)
Stains and engobes
c)
Temperature and atmosphere of the fire
d)
Oxygen and oxides
8.
Two decorative materials used with glazes:
a)
Stains and engobes
b)
Glazes and paint brushes
c)
Salt and Sgraffito
d)
Wood ash and saw dust
9.
Four common methods of glazing:
a)
A. Dipping, spraying
b)
B. Smoothing, flattening
c)
C. Pouring, brushing
d)
A and C
10.
Glazing defects come from:
a)
Compounding the glaze
b)
Improper firing
c)
Poor application
d)
All of the above
11.
Silica is the glass-forming ingredient of glazes and glass.
a)
True
b)
False
12.
Silica combines with water and alumina to make clay.
a)
True
b)
False
13.
Flux is used to raise the melting temperature of glazes.
a)
True
b)
False
14.
Glazes that are mostly clay are called slip glazes.
a)
True
b)
False
15.
Native Americans were the first to use glazes.
a)
True
b)
False
16.
High-fire hardness and quality can be achieved at low temperatures.
a)
True
b)
False
17.
The 2 groups of texture in glazes are glossy and mat/waxy.
a)
True
b)
False
18.
Between 1/2 and 2 inches is the right thickness for glazing a pot.
a)
True
b)
False
19.
Most defects occur in the application process.
a)
True
b)
False
20.
Dry texture or surface is caused by the glaze being too thin.
a)
True
b)
False
21.
__________ is used to make glass.
a)
Silica sand
b)
Grog
c)
Clay
d)
Glaze
22.
Glaze is different from glass in both ____________ and ____________
a)
Texture and form
b)
Thickness and form
c)
Function and hardeness
d)
Function and form
23.
Silica makes up approximately _________ of glazes.
a)
Half
b)
Quarter
c)
All
d)
None
24.
_____________ controls the melted silica to keep it from running and provides hardness.
a)
Oxides
b)
Oxygen
c)
Clay
d)
Alumina
25.
Throwing salt into a kiln so that the pots glaze themselves is called ____________.
a)
Salt glazing
b)
Dangerous
c)
Decorative glazing
d)
Sgraffito
26.
Lead glazes are rarely used and not used in schools because they are ____________.
a)
Expensive
b)
Brittle
c)
Only high fire glazes
d)
Poisonous
27.
Metallic oxides are formed when metal combines with _____________.
a)
Water
b)
Oxygen
c)
Iron
d)
Clay
28.
_____________ is when a design is carved or scratched out of the engobe layer for a positive or negative effect.
a)
Glazing
b)
Etching
c)
Sgraffito
d)
Stain
29.
Low-fire colors _____________ at high-fire temperatures.
a)
Are not possible
b)
Are possible
c)
Could be possible
30.
Rust is the most common oxide we come across, otherwise known as ____________
a)
Red oxide
b)
Poisonous
c)
Defective
d)
Iron Oxide
100 %
