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| Name:_________________________ | Date:_______________ | |
Materials | ||
A.
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Write the number of the correct answer in the brackets.
B. 
1.
Which of the following are made from wood?
(a) woks (b) papers
(c) tyres (d) furniture
( )
(1)
(2)
(3)
(4)
(a) and (b).
(b) and (c).
(c) and (d).
(b) and (d).
2.
We use copper as electrical wires because copper ________.
( )
(1)
(2)
(3)
(4)
can conduct electricity
is an insulator
has nice colour and is cheap
can float on water
3.
Plastic has become a commonly used material because________.
(a) It is light weight.
(b) It is environmental friendly.
(c) It is durable.
(d) It is soft.
( )
(1)
(2)
(3)
(4)
(a) and (b).
(a) and (c).
(b) and (c).
All of the above.
4.
To prevent wood from being attacked by insects, it is ________.
( )
(1)
(2)
(3)
(4)
cut into planks
treated with preservatives
soaked in water for long period
sprayed with metal coating
5.
Which statement about the Earth's crust is false?
( )
(1)
(2)
(3)
(4)
It is made of rocks.
It is very hard and strong.
It is not suitable for vegetation.
It contains many mineral ores.
Write "T" for true and "F" for false.
C.
1.
Most objects are made from a combination of different materials.
( )
2.
Rocks are lighter or less dense than plastics.
( )
3.
All things around us are made from some kind of materials.
( )
4.
The bodies of cars and aeroplanes are made of metals.
( )
5.
All metals can be attracted by magnets.
( )
Fill in the blanks with the most suitable word.
1.
Some materials are _______________ while others are man-made or artificial.
2.
We choose a particular material to make an object because the material has special _______________.
3.
_______________ and _______________ combine to form cement for use in building houses,
offices and factories.
4.
An _______________ is a material made from a mixture of different metals.
5.
In order to save the environment, we should use materials that can be _______________.