CBSE Class 10 Social Science Resources and Development Assignment

Question : Name the soil type which is widely found in Western Rajasthan. Explain two important characteristics of this soil type which makes it unsuitable for cultivation.
Answer :  The soil type in western Rajasthan is arid soil, following are its characteristics :
(i) it consists very high kankar nodules due to increasing calcium content downwards .
(ii) it is brown - yellow in its colour.
(iii) it is difficult to cultivate anything on this type of soil , but cultivation can be encouraged after proper irrigation as in western Rajasthan. 

Question : Mention any three features of arid soils.
Answer :  (i) Arid soils range from red to brown in colour.
(ii) They are generally sandy in texture and saline in nature.
(iii) Due to dry climate, high temperature, evaporation is faster and the soil lacks humus and moisture.
(iv) The lower horizons of the soil are occupied by Kankar because of the increasing calcium content.  

Question : What is Agenda 21? List its two principles.
Answer : Agenda 21 was adopted at first International earth Summit held in 1992 at Rio de Janerio Brazil The two principles are as follows : 
(a) To combat environment damage, poverty disease through global cooperation on (common interests, mutual needs and shared responsibilities)
(b) Every local government should draw its own local Agenda 21. 

Question : 'Indiscriminate use of resources had led to numerous problems'. Justify this statement. Land Resources; Land Utilization; Land Use Pattern in India; Land Degradation and Conservation Measures
Answer : Resources are vital for human survival and it was believed that resources are free gift of nature. The indiscriminate use of resources led to the following problems.
(i) To satisfy the greed of few individuals, depletion of resources has continued.
(ii) Due to the accumulation of resources in few hand, the society gets divided into two segments, i.e., rich and poor.
(iii) Indiscriminate use of resources has led to ecological crises, e.g., ozone layers depletion, land degradation, global warming and environmental pollution. 

Question : Which is the main cause of land degradation in Gujarat, Rajasthan and Madhya Pradesh? How can it be checked? Explain.
Answer :  (i) Main Cause : Large scale overgrazing has caused severe land degradation. Measures to check include:
(a) Afforestation and proper management of grazing.
(b) Planting of shelter belts of plants.
(c) Stabilization of sand dunes by growing thorny bushes.
(d) Control on overgrazing. 

Question : Distinguish between the renewable and nonrenewable resources.
Answer :  Renewable Resources : Resources that can be replenished after a short period of time are called Renewable Resources. For example – agricultural crops, wind energy, water, forest, wildlife, etc. Non-renewable Resources : Resources which takes million years of time to replenish are called non-renewable resources. For example – fossil fuels. We must remember that some resources like metals are recyclable.  

Question : Define the following terms:
(i) Current fallow land
(ii) Other than current fallow
(iii) Culturable waste land
Answer :  (i) Current fallow land : Left uncultivated for one or less than one agricultural year.
(ii) Other than current fallow : Left uncultivated for past 1 to 5 agricultural years.
(iii) Culturable waste lands : Left uncultivated for more than 5 agricultural years. 

Question : What are the three stages of resource planning in India?
Answer : 
(i) Identification and inventory of resources across the regions of the country.
(ii) Evolving a planned structure endowed with appropriate technology, skill and institutional set up for implementing resource development plans.
(iii) Match the resource development plans with overall national development plans. 

Question : How can you contribute to minimize the pollution? Explain.
Answer :  We can contribute to minimize pollution by :
(i) Planting more plants and trees.
(ii) Using non-conventional sources of energy such as solar and wind energy.
(iii) Using public transport instead of personal car motor bike etc.
(iv) Saving water and electricity.

Question : 'Indiscriminate use of resources had led to numerous problems'. Justify this statement.
Answer :  Resources are vital for human survival and it was believed that resources are free gift of nature. The indiscriminate use of resources led to the following problems.
(i) To satisfy the greed of few individuals, depletion of resources has continued.
(ii) Due to the accumulation of resources in few hand, the society gets divided into two segments, i.e., rich and poor.
(iii) Indiscriminate use of resources has led to ecological crises, e.g., ozone layers depletion, land degradation, global warming and environmental pollution. 

Long Questions for Class 10 Social Science Resources and Development

Question : "In India, some regions are rich in certain types of resources but deficient in some other resource". Do you agree with the statement? Support your answer with any three examples.
Answer :  Yes, there are regions which are rich in certain types of resources but are deficient in some other resources.
(i) Jharkhand, Chhattisgarh and Madhya Pradesh are rich in minerals and coal deposits.
(ii) Arunachal Pradesh has abundance of water resources but lacks in infrastructural development.
(iii) Rajasthan is endowed with solar and wind energy but lacks in water resources.
(iv) Ladakh has rich cultural heritage but lacks in water resources and infrastructure. 

Question : What type of soil is found in the river deltas of the eastern coast? Give four main features of this type of soil.
Answer :  Alluvial soil is found in the entire northern plain it is the most widely spread soil of India
Main features of alluvial soil :
(i) It is formed by the deposition of materials brought down by the himalayan rivers.
(ii) It is highly fertile.
(iii) It consists of various proportion of sand, silt and clay.
(iv) It is rich in potash, phosphoric acid and lime but deficient in organic matter.