1
thin, stiff pasteboard, used for boxes
2
bird wings are made of this
3
skin of an animal in which the hair has been removed and prepared by tanning
4
a metal element having a reddish brown color, used as an electrical conductor
5
a highly elastic solid from the milky juice of rubber trees.
6
a yellowish brown metal that is an alloy of copper and tin
7
a mixture of clay and limestone, usually mixed with water and sand
8
a soft, white substance made up of the fibers of the seeds of plants of the mallow family
9
when you win a race this is the material which is made the second medal
10
the hard substance, formed of mineral matter, of which rocks are made.
11
a heavy fabric of cotton woven with white and blue threads, used esp. for jeans.
12
a substance made from wood pulp, rags, or other fiber, used to write or print
13
a strong, thick line or cord, made of twisted strands of hemp
14
natural earthy material that is stiff and sticky when wet, used for making bricks
15
a hard, brittle, mostly transparent substance, usually produced by heating and melting sand
16
it cames from trees
17
a precious yellow metal
18
fine, soft, curly hair that forms the fleece of some animals
19
candles are made of this
20
cans are made by this material
