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Differentiation of Natural and Man-made Materials

Natural resources are the materials obtained from nature used in day to day life : namely air for breathing; water for drinking, cooking; agriculture and cleaning.etc. soil for construction, cultivation of crops. To meet our everyday requirements we use a number of man made materials.
Exhaustible Resources

These are resources present to a limited extent, They can be exhausted by human activities. Examples of these resources are forests, wildlife, minerals, coal, petroleum, Natural gas. etc.


Example: L.P.G. (liquid petroleum gas for cooking in our home) petrol, diesel for running vehicles, coal for production of electricity etc.


In Exhaustible Resources

Are the resources are present in unlimited quantity in nature and are not likely to be exhausted by human activities.


Example: Air, Sunlight

Exhaustible and Inexhaustible Natural Resources

Activity to understand Exhaustible and Inexhaustible Natural Resources :

In this group activity the students are first divided in-group of 7 each and the group of students are further divided in to sub groups of 1, 2 and 4 students and the containers filled with popcorn/peanuts/roasted gram/toffees were kept on tables. The sub groups represent first, second and third generation consumers respectively.

Put one full container for each group on a table. Ask consumers of the first generation from each group to consume eatables from the container of their group. Now, ask the second-generation consumers from each group to do the same. Ask students to observe carefully the availability of eatables in each container. If some thing is left in the containers, ask third generation from each group to consume it. Now , finally observe whether all the consumers of the third generation got the eatables or not. Also observe if any thing is still left in any of the containers.


Consider that the eatables in the container represent the total availability of an exhaustible natural resource like coal, petroleum or natural gas. Each group may have different consumption pattern. By performing the activity the students will understand which group is greedy and which group would leave some eatables. The group that leaves some eatables thinks about the future consumption. Students learn the importance of conserving our natural resources.

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