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Exercise 6. Divide the following words into two groups, those which describe or
belong to a) metallic materials; b) non-metallic materials.
Ferrous, iron, polymers, alloys, thermo
plastics, steel, chromium, poly-
carbonate, copper, rust, tungsten, cobalt, ductile, brass, electrical insulators,
thermosets, non-ferrous, cobalt, nickel, zinc, aluminium, ductile, bronze,
rubber, thermoset, plastics, polyvinylchloride, ceramics, clay, porcelain, mal-
leable, cast iron.
Exercise 7. Think over the definitions of the words which appear in the texts and
dialogues and then:
a) agree or disagree with the following definitions
1.
Common
means happening frequently or existing in large amounts or
numbers.
2.
Rubber
is a strong substance that can bend easily and is used for making
things such as tyres or boots.
3.
Non-ferrous metals
are metals that do not contain iron.
4.
Ferrous metals
are metals that contain iron.
5.
Amount
is a quantity of something.
b) match each word with its correct definition
cast iron, property, conductor, insulator, copper
1. Quality or a feature of something.
2. Ferrous metal.
3. Non-ferrous metal.
4. Substance that allows heat or electricity to pass through it.
5. Substance that reduces the amount of heat or
electricity that can pass
through something.
Достарыңызбен бөлісу: 
