Question 1. Give examples. It should be technologically accessible, economically feasible and culturally acceptable. Examples are: minerals, forests, fossil fuels etc.. Question 2. Answer: Mere presence of resources, as free gifts of nature, does not make them resources. Human beings are essential components of resources because they transform material available in our environment into resources.
The utility of resources depends on the stage of cultural development of man and the tools and technology used by him. Question 3. Write the classification of resources on four different bases. Question 4. Explain the classification of resources on the basis of origin and give one example of each. Answer: On the basis of origin, resources can be classified as Biotic and Abiotic. Biotic Resources are obtained from the biosphere. They have life or are living resources, e.
Abiotic Resources include all non-living things, e. Question 5. Classify the resources on the basis of exhaustibility and give two examples of each. Answer: On the basis of exhaustibility, resources can be classified as: Renewable and Non-renewable. Renewable Resources. The resources which can be renewed or reproduced by physical, chemical and mechanical processes are known as renewable or replenishable resources, e.
Non-renewable Resources. The resources which once get exhausted, cannot be remade. They take a long geological period of time, i. Question 6. Write two types of renewable resources and give one example of each type. Answer: Two types of renewable resources are as follows:. Question 7. Write two characteristics of non-renewable resources and write their two broad categories with examples.
Answer: Two characteristics of non-renewable resources:. Question 8. Give any two examples of non-renewable resources. Question 9. Explain four types of resources based on ownership and give one example of each type. Question Distinguish between the following: 1. Potential and Developed Resources; 2.
Stock and Reserves. Answer: 1. Potential Resources. Resources which are found in a region, but have not been utilised, e. Developed Resources. Resources which are surveyed and their quality and quantity have been determined for utilisation.
The development of resources depends on technology and level of their feasibility, e. Materials in the environment, which have the potential to satisfy human needs but man does not have the appropriate technology to access them are included among stock, e. But we do not have the required technical know-how to use them for this purpose. Name the categories under which natural resources can be grouped on the basis of state of development.
How are natural resources important for man? Give five points. Answer: Importance of resources for man:. List the problems which resulted due to indiscriminate use of resources by man. Answer: Sustainable existence is a component of sustainable development which aims at development without damaging the environment and at the same time conserving for future generation.
Therefore, resource planning is necessary for judicious, rational and equitable distribution and proper utilisation of resources. It has become essential for a sustained quality of life and global peace. Give reasons. Answer: Planning is necessary for proper and judicious utilisation of resources.
Reasons for resource planning:. Answer: There are regions which are rich or self-sufficient in certain types of resources and there are areas that are deficient or have acute shortage of some vital resources.
For example:. Justify this statement with two relevant points and an example. Through planning, regions which have shortage of vital resources and those having adequate quantities, receive equal attention.
Write four factors which determine resource development in a region. Answer: Four factors involved in the development of resources are:.
Why is it necessary to conserve our resources? Give three reasons. Answer: Conservation is judicious and planned use of natural resources for sustainable benefit to the present generation. It also maintains a potential to meet the needs and aspirations of future generations. Three reasons for conservation:. Explain the concept of resource conservation as voiced by Gandhiji. Justify the statement by giving suitable examples.
Answer: Present sources of energy in India are coal, petroleum, natural gas, solar energy, wind energy, hydel power, electricity, wood for fire, cow dung etc.
Most of these are non-renewable sources of energy which may get exhausted after some time. These are available in limited quantities. The present rate of consumption is higher than the rate at which these resources are being replenished and should be preserved for our future generations.
The total hydel power potential in India is estimated at 1,50, MW of which only one-sixth has been developed so far. Why land-use should be done in a planned manner? Write two points. Look at the picture and name three major relief features of India and their respective share in the total area. Answer: Three major relief features: 1. Name the relief feature occupying the largest area, along with its percentage share in the total area.
Name three main relief features of India and write the importance of each. Mountains i ensure perennial flow of some rivers and many rivers rise from them. Plateaus i possess rich reserves of minerals. Look at the picture and explain the land-use pattern in India.
Why has land under forest not increased much since ? Answer: The major land-use categories and their percentage share is:. The land under forests has increased marginally by about 4.
From Reasons for marginal increase in forest area:. Distinguish between each of the following: a Current fallow and other than current fallow land b Waste-land and culturable waste-land c Net sown area and gross cropped area.
Answer: a Current fallow land. Land left without cultivation for one or less than one agricultural year. Other than current fallow land.
Land left uncultivated for the past one to five agricultural years. It includes rocky, arid and desert areas which are lying waste at the moment. Culturable waste land. Arable land which is left uncultivated for more than five agricultural years. It is the total area under cultivation. Gross Cropped Area.
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