Lesson 4 Vocabulary

1

100

name given to all materials used to build objects that are obtained from raw materials

technical materials 

200

easy to scratch

soft

300

can be flattened into sheets 

malleable 

400

- sliver colored and shiny

- very resistant to corrosion and very ductile and malleable 

- found in metal coils used as filler material in soldering 

tin 

500

- shiny, white, cheap and easy to recycle

- very lightweight, a good conductor of heat and electricity

- non-toxic and can be used in food packaging 

aluminium 

2

100

a material that is obtained directly from nature 

raw materials

200

difficult to break when hit

tough 

300

can be shaped into threads or wires 

ductile

400

- bright, red-colored 

- very good conductor of heat and electricity 

- found in wires, water and gas pipes, motor windings

copper 

500

- bluish-white color and one of the least-common materials

- resistant to corrosion and oxidation

- often used to coat and protect other metals 

zinc 

3

100

a raw material that has been prepared or refined

natural material 

200

easy to break when hit 

brittle 

300

a material that lets electricity, heat, or sound pass through it

conductor 

400

a cheap material made from wood, such as plywood, chipboard, or paper 

wood product or wood derivative 

500

- soft, ductile, and malleable

- rusts easily and very brittle with its low concentration of carbon 

- not a lot of real world applications but is used in magnets 

iron

4

100

a natural material that has been processed

processed material 

200

can be deformed and returns to its original shape 

elastic 

300

a material that does not let electricity, heat, or sound pass through it

insulator 

400

the solid, rigid part found underneath the bark of tree trunks 

wood 

500

- made from iron

- hard, very durable and economical

- widely used in industry and can be used in nuts and bolts 

steel 

5

100

difficult to scratch 

hard

200

can be deformed but does not return to its original shape 

plastic 

300

these woods are very easy to work with, cheap, and of uniform quality 

softwoods 

400

these types of woods are more expensive and diificult to work with, but they give a better-quality finish 

hardwoods 

500

- hard but brittle

- used in manufacturing engines, machine tool structures, manhole covers, streetlights 

cast iron