Page 48 - Science Class 06
P. 48
v It save us from confusion. MATERIALS
v Classified things can be sub-classified Materials are the ma er or substance which
also for further convenience. objects are made from.
Visit a modern departmental store. You will We use a wide range of different materials
see things placed on shelves a er classifi- daily; these might include:
ca on and sub-classifica on. v metal v plas c
Moreover, there are various counters for v wood v glass
various things for the convenience of the
v ceramics v synthe c fibres
shoppers. As soon as a shopper enters the
departmental store, he/she will go direct to v composites (made from two or more
the concerned counter and ask for what is materials combined together)
needed. The salesman shall lose no me to Different materials have different features
pick up the required item and hand it over or proper es, which make them suitable for
to the shopper. It is quite clear that different uses.
classifica on of things is always done in
Materials are Alike Too
view of some similarities among them.
We have already learnt that various
CLASSIFICATION IN NATURE
materials are different forms of ma er. So,
Coming to nature, we can group all the they are bound to be alike in some ways.
things of the world in two groups in terms of Let us see how:
life as living and non-living. Each of the
groups can be further sub-classified into sub- Materials are different from one another,
groups. we know some are hard as stone, wood,
iron, etc. They are called solids. Some are
Observe the pictures given below:
like water, milk, honey, oil, etc. They are
called liquids. S ll others are like the air and
the kitchen gas. They are called gases. All
these different materials have different
proper es as well. Hard materials (solids)
have definite shapes, but liquids and gases
take up the shapes of their containers. They
can flow as well as for that ma er can be
poured from one container into another.
Living things Non-living things
v Materials occupy space : Take a cup and
fill it up with sugar to the brim. If you
put more sugar in it, it will drop outside
1. Name any five things similar to each other.
around the cup showing thereby that it
2. What is classifica on? has occupied that en re space inside
3. What are the uses of classifica on? the cup.
48 Science-6
