JKBOSE 10th Class Social Science Solutions chapter – 1 Resources and Development
JKBOSE 10th Class Social Science Solutions chapter – 1 Resources and Development
JKBOSE 10th Class Social Science Solutions chapter – 1 Resources and Development
Jammu & Kashmir State Board JKBOSE 10th Class Social Science Solutions
INTRODUCTION TO THE CHAPTER
- Our environment and resources are characterised by interaction and interdependence.
- Resources are the physical material that are essential for the survival of life on earth and that satisfy human wants and needs. Resources are free gifts of nature.
- Man uses technology and skills to add value to resources. Nature, technology and institutions are interrelated.
- On the basis of their origin, resources can be classified into two categories-natural resources and human and human made resources.
- Resources obtained from nature are natural resources. Living resources which sustain life are biotic resources and resources which have no life but are essential for sustaining life are abiotic resources.
- Fauna and flora are biotic resources and rocks and metals are abiotic resources.
- Human resources refer to the man-power of a country. People are the greatest resource of all and are sometimes known as special resources.
- Resources which are renewed after use and do not get exhausted are renewable resources and resources which cannot be quickly renewed after use are non-renewable resources.
- Minerals and fossil fuels are non-renewable resources, whereas, solar and wind energy, water, forests and wildlife are renewable resources.
- Resources owned by local, state or national government like forests, mines, minerals, parks and rivers are called national resources.
- Rajasthan and Gujarat have enormous potential for the development of wind and solar energy.
- The development of resources depends upon technology. Potential resources are not utilised due to lack of technology.
- Planning of resources is necessary at the national, state, regional and local levels.
- Protection, preservation and efficient use of resources are together called conservation of resources. It is essential for long term dependable or sustainable use of resources.
- Resource conservation is essential at various levels. The first Earth Summit was held at Rio de Janeiro, Brazil in 1992.
- Land is a natural resource of utmost importance. Human beings fulfil most of their needs from it.
- The various uses to which land is put are referred to as land use. We use land for different purposes such as agriculture, for settlements, grazing, mining, establishing industries, etc.
- Out of the total reported area, 43 per cent is the net sown area in India.
- Net sown area is less than 10 per cent in North Eastern States.
- About 130 million hectares of land has been degraded in India.
- The alluvial soils are the most widely spread soil in India.
- Deccan trap is made up of black soils.
IMPORTANT TERMS
- Abiotic Resources. These are non-living things like iron ore, copper, etc.
- Afforestation. The planting of trees on a large scale.
- Biotic Resources. These are living elements like forests, animals, etc.
- Conservation of Resources. The proper and planned use of resources.
- Developed Resources. The resources which can be developed with the use of technology.
- Fallow Land. Land which is kept uncultivated for 2 or 3 years to restore its soil fertility.
- Fossil Fuels. The energy resources obtained from fossils buried in rocks.
- Individual Resources. These are privately managed resources.
- Non-Renewable Resources. These resources cannot be regenerated.
- Potential Resources. The resources which are actually present in an area but may not have been utilised.
- Renewable Resources. These are resources which can be reproduced or renewed.
- Resource Planning. It is the strategy for proper use of resources.
- Resource. All the useful elements of our environment.
- Soil. The uppermost layer of the earth crust.
- Sustainable Development. It means the balanced development with the need of present and of the future.
J&K class 10th Social Science Resources and Development Textbook Questions and Answers
Q. 1. Multiple Choice Questions
(i) Which one of the following types of resources is iron ore?
(a) Renewable
(b) Biotic
(c) Flow
(d) Non-renewable.
Ans. (d) Non-renewable.
(ii) Under which of the following type of resources can tidal energy be put ?
(a) Replenishable
(b) Human-made
(c) Abiotic
(d) Non-recyclable.
Ans. (a) Replenishable.
(iii) Which one of the following is the main cause of land degradation in Punjab ?
(a) Intensive cultivation
(b) Deforestation
(c) Over irrigation
(d) Over grazing.
Ans. (c) Over irrigation.
(iv) In which of the following states is terrace cultivation practised ?
(a) Punjab
(b) Plains of Uttar Pradesh
(c) Haryana
(d) Uttarakhand
Ans. (d) Uttarakhand.
(v) In which of the following states is black soil found ?
(a) Jammu and Kashmir
(b) Gujarat
(c) Rajasthan
(d) Jharkhand
Ans. (b) Gujarat.
Q. 2. Answer the following question in about 30 words.
(i) Name three states having black soil and the crop which is mainly grown in it.
Ans.. States with black soil :
(a) Gujarat (b) Maharashtra (c) Madhya Pradesh.
Crop grown: Cotton.
(ii) What type of soil is found in the river deltas of the eastern coast ? Give three main features of this type of soil.
Ans. Soil found in the Eastern Coastal Deltas: Alluvial Soil.
Main features of Alluvial Soil:
(a) Alluvial soils are very fertile.
(b) Due to its high fertility, these soils are intensively cultivated.
(c) These soils are rich in potash, phosphoric acid and lime.
(iii) What steps can be taken to control soil erosion in the hilly areas ?
Ans. (a) Contour ploughing on slopes.
(b) Terraced cultivation restricts erosion.
(c) Strip cropping checks soil erosion.
(d) Planting of trees to form shelter belts.
(iv) What are the biotic and abiotic resources ? Give some examples.
Or
Differentiate between the Biotic and Abiotic resources.
Or
Define abiotic resources.
Ans. Biotic Resources. The living resources which sustain life are called biotic resources. Such as flora and fauna.
Abiotic Resources. Resources which have no life but are essential for sustaining life are called abiotic resources. For example rocks and metals.
Q. 3. Answer the following questions in about 120 words.
(i) Explain land use pattern in India and why has the land under forest not increased much from 1960-61.
Ans. Land use in India (2008-09) :
(a) Net sown area. India has a very high percentage (46.24%) of total area under cultivation.
(b) Fallow land. Only 3.37% of land is fallow land.
(c) Pastures. The area under pastures is small (3.38%).
(d) Cultivable waste. The area under cultivable waste is 4.17%.
(e) Forests. The area under forests (22.78%) is not sufficient to maintain the ecological balance.
(f) Wasteland. The area under wasteland (8.16%) is increasing due to deforestation and over grazing.
(g) Forest area. The land under forests has not increased much from 1960-61.
Reasons:
(a) This is due to reckless deforestation.
(b) Due to increase in population, the forests have been cleared for cultivation and urbanisation.
(ii) How have technical and economic development led to more consumption of resources ?
Or
Technical and economic development has led to more consumption of resources. How ?
Ans. Resources have to be available for development. Due to absence of technology, many resource rich regions remain backward.
Reasons:
(a) Technology is used to exploit resources in India. The consumption of resources is increasing due to the use of technology and the quality of human resources in agriculture, mining and industries.
(b) With the use of technology, humans interact and modify nature and create institutions to increase the consumption of resources for economic development.
(c) Human made resources, like houses, buildings, roads, industries, etc. require more resources for consumption.
PROJECT/ACTIVITY
Q. 1. Make a project showing consumption and conservation of resources in your locality.
Ans. Guidelines for making the project.
Consumption of Resources :
Resources | How we consume |
Agricultural Resources | For food, clothing, etc. |
Water Resources | For drinking, washing, irrigation, etc. |
Industrial Resources |
Such as Kitechen ware, washing machines, electronic goods, etc.
|
How do we conserve resources ?
- By judicious and proper use.
- By not over exploiting them.
- By stop wasting water resources.
- By minimising use of electricity and switching off a fan or a light when not required.
- By using substitute like plastic ropes, strings instead of using jute ropes and strings.
Q. 2. Have a discussion in the class-how to conserve various resources used in your school?
Ans. Guidelines. Divide the class in groups. One group will discuss how to conserve water sources available in the school. The second group will discuss about the measures to conserve electricity in the school campus. The third group will discuss how to keep our surrounding environment neat and clean. The fourth group will put forward its view on conservation of other resources available in the school campus.
Q. 3. Imagine if oil supplies get exhausted, how will this affect our life style ?
Ans. If the oil supplies get exhausted, it will adversely affect our life style in the following ways :
- Without oil, it would be difficult to run industries.
- Transportation facilities would get effected. There will be no vehicles on the road.
- Agricultural production will suffer and come to a standstill.
Q. 4. Solve the puzzle by following your search horizontally and vertically to find the hidden answers.
- Natural endowments in the form of land, water, vegetation and minerals.
- A type of non-renewable resource.
- Soil with high water retaining capacity.
- Intensively leached soils of the monsoon climate.
- Plantation of trees on a large-scale to check soil erosion.
- The Great Plains of India are made up of these soils.
Ans. (i) Resource (ii) Minerals (iii) Black (iv) Laterite (v) Afforestation (vi) Alluvial.
J&K class 10th Social Science Resources and Development InText Questions and Answers
Q. 1. Can you identify and name the various items used in making life comfortable in our villages and towns ? List the items and name the material used in their making.
Ans. Do it yourself.
Q. 2. Identify at least two resources from each category.
Ans.
(i) Type of resources on the basis of origin :
(a) Biotic resources: Human being and livestock
(b) Abiotic resources: Rocks and metal.
(ii) Type of resources on the basis of exhaustibility :
(a) Renewable resources: Solar and wind energy
(b) Non-renewable resources: Mineral and fossil fuels.
(iii) Type of resources on the basis of ownership :
(a) Individual resources: House and plots
(b) Community owned resources: Public parks and playing grounds.
(c) National resources: Forests and wildlife.
(d) International resources: All ocean resources beyond 200 nautical miles of the exclusive economic zone belong to open ocean and no individual country can utilise these without the prior permission of international institution.
Q. 3. Prepare a list of stock and reserve resources that you are familiar with from your local area.
Ans. Try it yourself.
(Hint: Stock-Water in compound; Reserve- Stored water in dams, and forests, etc.)
Q. 4. Imagine, if the oil supply gets exhausted one day, how would this affect our life style ?
Ans. If the oil supplies get exhausted, it will adversely affect our life style in the following ways :
- Without oil, it would be difficult to run industries.
- Transportation facilities would get effected. There will be no vehicles on the road.
- Agricultural production will suffer and come to a standstill.
Q. 5. Plan a survey in your colony/village to investigate people’s attitude towards recycling of the domestic/agricultural wastes. Ask questions about :
(a) What do they think about resources they use ?
(b) What is their opinion about the wastes, and its utilisation ?
(c) Collage your results.
Ans. Try it yourself.
Q. 6. Prepare a list of resources found in your state and also identify the resources that are important but deficit in your state.
Ans. Try it yourself.
Q. 7. What resources are being developed in your surroundings by the community/ village panchayats/ward level communities with the help of community participation ?
Ans. Try it yourself.
Q. 8. Try to do a comparison between the two pie charts given for the land use and find out why the net sown area and the land under forests have changed from 1960-61 to 2008-09 very marginally.
(Source: Directorate of Economics and Statistics, Ministry of Agriculture, 2008-09)
Ans.
(i) Change in net sown area
In 2008-09, net sown area was = 46.24%
In 1966-61, net sown area was = 45.26%
Changed in this year = 46.24 – 45.26
= 0.98%
(ii) Change in land under forest = 22.78-18.11%
= 4.67%
(Students to give explanation with the help of their teacher)
Q. 9. Find out reasons for the low proportion of net sown area in these states.
Ans. Try it yourself.
J&K class 10th Social Science Resources and Development Important Questions and Answers
Objective Type Questions
Multiple Choice Questions
1. Which of the following is not a type of resources ?
(A) Natural Resources
(B) Human Resources
(C) Human made Resources
(D) Civilization.
Ans. (D) Civilization.
2. Which of the following is a type of community owned resource ?
(A) Parks
(B) Rocks
(C) Metals
(D) Forests
Ans. (A) Parks.
3. Name a state which have more than 80% net sown area.
(A) Punjab
(B) M.P.
(C) W.B.
(D) Maharashtra.
Ans. (A) Punjab.
4. What is the ill effect of indiscriminate utilization of resources ? .
(A) Global Warming
(B) Air pollution
(C) Grazing grounds
(D) Soil formation
Ans. (A) Global Warming.
5. Ravines are found in :
(A) Chambal Valley
(B) Son Valley
(C) Damodar Valley
(D) Betwa Valley.
Ans. (A) Chambal Valley.
6. Name the crop for which black soils is suited.
(A) Cotton
(B) Ragi
(C) Wheat
(D) Bazra.
Ans. (A) Cotton.
7. Which is the mostly found soil in India ?
(A) Red soil
(B) Alluvial
(C) Laterite
(D) Black soil.
Ans. (B) Alluvial.
8. Which soil is most indispersal on Deccan Plateau ?
(A) Alluvial
(B) Black soil
(C) Laterite
(D) Red soils.
Ans. (B) Red soils.
9. What name is given to Black soils ?
(A) Cotton soils
(B) Regur soils
(C) Iron soils
(D) Red soils.
Ans. (B) Regur soils.
10. What is the percentage of fallow land ?
(A) 5%
(B) 6%
(C) 7%
(D) 8%.
Ans. (A) 5%.
11. The soils most spread over in Deccan Plateau is :
(A) Alluvial Soil
(B) Black Soil
(C) Laterite Soil
(D) Red Soil.
Ans. (B) Black Soil.
12. The type of soil also called as Regur Soil is :
(A) Alluvial soils
(B) Black soils
(C) Arid soils
(D) Forest soils.
Ans. (B) Black soils.
13. Total geographical area of India in million sq. km. is:
(A) 2.28
(B) 3.28
(C) 4.28
(D) None of these.
Ans. (B) 3.28.
Fill in the blanks :
1. Net sown area in India is …………… %
Ans.47%
2. ……………. resources are derived from living things.
Ans.Biotic
3. Localised resources are found only in …………. places.
Ans.certain
4. The example of human resources is ………….
Ans.people
5. ……………. is the application of latest knowledge and skill is doing or making things.
Ans.Technology
6. Soil is most important …………. resource.
Ans. natural
True/False :
1. Natural Resources help in economic development of the country.
Ans.True
2. Red colour of Red soil is due to diffusion of iron incrystalline and metamorphic rocks.
Ans. True
3. For wheat crop black soil is best suited.
Ans.False
4. Over irrigation is the main cause of land degradation in Punjab.
Ans.False
5. Flora and fauna are the biotic resources.
Ans.True
6. Black soil is important for growing cotton.
Ans. True
Very Short Answer Type Questions o
Q. 1. What are resources ?
Ans. Resources are useful elements of the environment which satisfy our need.
Q. 2. What is the main purpose of resources ?
Ans. The main purpose of resources is to satisfy the basic needs of mankind, i.e., food, shelter and clothing.
Q. 3. Name one individual resource each (i) in rural area (ii) in urban area.
Ans. (i) Land owned by farmers; (ii) Plots and houses.
Q. 4. Give examples of community-owned resources in village and in urban areas.
Ans. (i) In villages: Grazing grounds, burial grounds, village ponds. (ii) In urban areas: Parks, picnic spots, playgrounds.
Q. 5. Give three examples of National Resources.
Ans. Canals, Railways and Roads
Q. 6. Which minerals are mined by India in the Indian ocean?
Ans. Polymetallic modules-Cobalt, iron, manganese and nickel. Polymetallic sulphides – copper, iron, zinc, silver and gold.
Q. 7. On what factors does the development of resources depend ?
Ans. Development of resources depends on technology, human skill and stage of development.
Q. 8. What are the ill-effects of the indiscriminate utilisation of resources ?
Ans. Global warming, ozone layer depletion, environmental pollution and land degradation.
Q. 9. From where do we obtain biotic resources ?
Ans. We obtain biotic resources from the biosphere.
Q. 10. Why are resources necessary ?
Ans. (i) For human survival; (ii) For our quality of life.
Q. 11. Which problems were discussed in the First Earth Summit ?
Ans. Environmental protection and Socio-economic development.
Q. 12. Name four ecological crises.
Ans. (i) Global warming (ii) Ozone layer depletion (iii) Environmental pollution (iv) Land degradation
Q.13. State two reasons for environmental problems.
Ans. (i) Irrational consumption; (ii) Over utilisation of resources.
Q. 14. Who wrote the book ‘Small is beautiful’?
Ans. E. F. Schumacher.
Q. 15. Name the crop for which black soil is best suited.
Ans. Cotton.
Q. 16. What do you mean by Deccan trap ?
Ans. Deccan trap is a plateau formed by the deposition of basaltic lava.
Q. 17. Name the soil which covers the largest part of India.
Ans. Alluvial soils.
Q. 18. What other name is given to black soils ?
Ans. Regur soil or cotton soil.
Q. 19. What is a ravine ? Name an area where it is found.
Ans. Ravine is a gully formed by fluvial erosion. It is found in the Chambal river basin.
Q. 20. What is a fallow land ?
Ans. It is the land cultivated once in two or three years, which is then left for one or two seasons to regain its fertility.
Q. 21. Name two states which have more than 80 per cent net sown area.
Ans. Punjab and Haryana.
Q. 22. Name two states where the net sown area is less than 10 per cent.
Ans. Arunachal Pradesh and Mizoram.
Q. 23. Name two factors for the formation of rock soil.
Ans. Climate and rocks.
Q. 24. Name two plateaus in India, where black soils are found.
Ans. (i) Chhattisgarh plateau; (ii) Maharashtra plateau
Q. 25. Why are red soils red in colour?
Ans. Due to diffusion of iron in the soil.
Q. 26. How much area of India is covered by plains, mountains and plateau ?
Ans. Plains – 43%; Mountains – 30%; Plateau – 27%.
Q. 27. Define the term soil.
Ans. The upper most layer of the earth’s crust is known as soil.
Short Answer Type Questions
Q. 1. What is resource planning? Why is the planning of resources essential ? Explain any two reasons.
Or
Why is it essential to have resource planning ? Give three reasons.
Ans. Resource Planning is the most widely accepted strategy of development and judicious use of resources.
Resources planning is essential because:
- Resources are limited in supply.
- Overutilisation or over exploitation of resources must be stopped.
- Resource are unevenly distributed over the surface of the earth.
Q. 2. Mention any four characteristics of black soils.
Ans. Characteristics of black soil:
- It has the capacity to retain moisture because it swells when wet and shrinks when dried.
- It is black in colour.
- It is also known as regur or cotton soil. It is good for growing cotton.
- It is rich in clay, lime, iron, calcium, magnesia and alumina and it lacks in nitrogen, phosphorus and organic matter.
Q. 3. Describe the major factors which are responsible for the formation of soil formation
Ans. Factors responsible for soil formation :
- Weathering. It is the process by which, rocks are broken down while being at one place. The physical and chemical processes affect weathering with the help of climate. The disintegration of rock is the basic material for soil formation.
- Climate. Climate as a factor of soil formation, plays a major role in lending texture to the unconsolidated particles in the soil. It gives physical structure to the soil.
- Decomposition. It is the process by which the decayed material are changed into humus. It is basically responsible for determining the type of soil and its colour.
- Relief. The slope of land and its general features determine the thickness of the soil between the surface and bedrock.
- Time. It is the most essential factor in soil formation. It is the time frame during which physical, chemical and biological processes operate in the soil.
All the above processes are involved in soil formation. Soil formation would be incomplete without the work of insects and worms in the soil. Their work consists of mixing the minerals and organic content in the soil.
Q. 4. What is soil erosion ? Write any two human activities that lead to soil erosion.
Or
Mention any three human activities responsible for soil erosion.
Ans. Soil erosion is the removal of the top layer of soil by running water, winds or human activities/actions is known as soil erosion.
Human activities responsible for soil erosion are:
(i) Deforestation. Cutting down of trees in forest and clearing land for agriculture, roads, industries and human habitation is one of the chief causes of soil erosion.
(ii) Over exploitation of ground water resources. Depletion of ground water resources due to over exploitation has led to many areas being converted into deserts and areas being prone to soil erosion.
The worst affected areas are Delhi, Punjab and Haryana.
(iii) Rapid growth of population and industrialisation. It has caused the accumulation of huge wastes on land. Many of these waste are non-degradable and when these are deposited underground, these wastes cause damage to soil and land surface.
Q. 5. Describe the steps involved in resource planning.
Or
Explain the three steps involved in resources planning in India.
Or
What is resource planning ? Discuss in detail its various stages.
Ans. Resource Planning is the most widely accepted strategy of development and judicious use of resources.
Resources planning is essential because:
- Resources are limited in supply.
- Overutilisation or over exploitation of resources must be stopped.
- Resource are unevenly distributed over the surface of the earth.
In order to correlate resources to their needs, the following steps are essential for the planning of resources.
- Survey. This is done by preparing an inventory of the resources. An expert body, like the Geological Survey of India in the case of mineral resources, uses various methods and techniques to identify and locate resources in different geographical areas. After that, an inventory is made.
- Evaluation. This process of planning requires determining the types of resources that is likely to exist in an area or the region. Evaluation is done with respect to the need and availability of technology as well as the economy.
- Exploitation. Resources, after survey and evaluation, have to be used and reused. These steps are taken to exploit the resources within a certain geographical area and time period. Planning of resource also involves correlating resources to their future needs.
Q. 6. Distinguish between Stock and Reserve resources, giving one example of each.
Ans. (i) Stock Resource. Materials in the environment, which have the potential to satisfy human needs but remain un-explored due to lack of appropriate technology to access these are included among stock resources.
For example, water can be used as a rich source of energy. But we do not have the required technical ‘know how’ to use them for this purpose. Hence, it can be considered as stock resources.
(ii) Reserve Resources. These are the subset of the stock, which can be put into use with the help of the existing technical ‘know how’ but their uses have been postponed for meeting future requirements.
For example, Water of the river can be used for generating hydroelectric power on a large scale but presently, it is being utilised only to a limited extent. Thus, the water in the dams, forests, etc., are reserves which can be used in the future.
Q. 7. What is meant by sustainability of development ?
Ans. Sustainability of development means the wise use of resources without damaging the environment. It meets the needs of the present, without compromising the ability of future generations to meet their own needs. For example, Natural resources are double-edged. They provide raw material and energy for development.
Q. 8. How is black soil formed? Where is this type of soil found in India ?
Ans. Black soil is formed due to the weathering of lava rocks. It is rich in clay, lime, iron, magnesia and alumina, but also lack phosphorous, nitrogen and organic matter. It is also known as cotton soil or regur soil.
Black soil is mainly found over the Deccan lava tract, including plateaus of Madhya Pradesh, Maharashtra, Malwa, Chhattisgarh and Andhra Pradesh.
Q. 9 Explain any three measures for the conservation of resources.
Ans. The conservation of resources means preservation, protection and efficient utilisation of resources. For this purpose, the following steps are necessary:
- To make judicious and planned use of resources.
- To make proper provisions to meet the needs of the future generations.
- To maintain resources in a healthy condition, so as to stop their degradation.
- To seek involvement of the community, especially in the case of forests, land, water and air, so as to keep the resources in a renewable and healthy state.
Q. 10. What are resources ? State three characteristics of resources.
Ans. All the useful elements of the environment, which satisfy human needs are called resources. The main characteristics of resources are :
- These are free gifts of nature and useful elements of the environment.
- These are technologically accessible.
- These are economically feasible.
- These are culturally acceptable.
- They satisfy basic needs of human beings.
- They are limited in supply.
Q. 11. What are renewable resources? Which processes are used to renew these? Name its two types and examples.
Ans. Renewable resources are those which can be renewed in nature. These can be replenished and do not exhaust.
The following processes are used to renew resources:
(i) Physical Process (ii) Chemical Process (iii) Mechanical Process
These are of two types: Continuous and Flow resources. Solar energy, wind energy, water, forests and wildlife are its examples.
Q. 12. Despite enormous potential, solar power is not developed in Rajasthan and Gujarat. Why?
Ans. The regions of Rajasthan and Gujarat are sandy deserts, where strong winds blow. There is bright sunshine throughout the year. So, there is great potential for development of solar power. Due to lack of technology and infrastructure, it is not properly harnessed. three examples.
Q. 13. Describe necessity of resource planning in India. Give
Ans. Planning is one of the most widely accepted strategy of judicious use of resources. It has immense importance in a country like India, which has enormous diversity in the availability of resources. There are some regions which are rich in certain types of resources while some areas are deficient in other resources. There are some regions which can be considered as self-sufficient in terms of the availability of resources while, there are some regions which have an acute shortage of vital resources. This calls for a balanced resource planning at the national, state, regional and local levels.
Q. 14. What do you know about Earth Summit ? What were its aims ?
Ans. Rio de Janeiro Earth Summit, 1992. In June 1992, more than 100 heads of states met in Rio de Janeiro in Brazil, for the first International Earth Summit. The Summit was convened for addressing urgent problems of environmental protection and socio-economic development at the global level. The assembled leaders signed the Declaration on Global Climate Change and Biological Diversity. The Rio Convention endorsed the Global Forest Principles and adopted Agenda 21 for achieving Sustainable Development in the 21st century. It aims at achieving global sustainable development.
Q. 15. What do you know about Agenda 21 ?
Ans. Agenda 21 is the declaration signed by world leaders in 1992 at the United Nations Conference on Environment and Development (UNCED), which took place at Rio de Janeiro, Brazil. It aims at achieving Global Sustainable Development. It is an agenda to combat the environmental damage, poverty, diseases through global co-operation on common interests, mutual needs and shared responsibilities. One major objective of Agenda 21 is that every local government should draw its own local Agenda 21.
Q. 16. Examine the factors on which the development of resources depend.
Ans. The development of resources is essential for the sustainable existence and sustainable development. It depends upon the following factors:
- The availability of resources is a necessary condition for development of any region.
- Changes in technology and institutions help in the development.
- Resources can contribute to development only when they are accompanied by appropriate technological development and institutional changes.
- In India, resource development in particular not only involves the availability of resources, but also the technology, quality of human resources and the historical experiences of the people.
Q. 17. Describe the steps taken for resource conservation at the world level.
Ans.
- At the international level, the Club of Rome advocated resource conservation for the first time in a more systematic way in 1968.
- In 1974, the Gandhian Philosophy was presented once again by Schumacher in his book ‘Small is Beautiful’.
- The seminal contribution with respect to resource conservation at the global level was made by the Brundtland Commission Report 1987. This report introduced the concept of ‘Sustainable Development’ and advocated it as means for resource conservation.
- The report was later published in a book entitled ‘Our Common Future’.
- Another significant contribution was made at the Earth Summit at Rio de Janeiro, Brazil in 1992.
Q. 18. Which physical and human factors determine the use of land in India ?
Ans. The use of land in India is determined by physical as well as human factors. The physical factors include:
(i) Topography (ii) Climate (iii) Soil types.
The human factors include population density, technology, culture and tradition.
Q. 19. Distinguish between reusable and non-reusable resources.
Or
Distinguish between renewable and non-renewable sources with suitable examples.
Ans.
Reusable Resources | Non-Reusable Resources |
(i) Renewable resources are known as reusable resources.
(ii) Resource development is an important exercise for reusable resources.
(iii) Examples are land, water and animals which can be developed and reused.
|
(i) Non-renewable resources are known as nonreusable resources.
(ii) Once used, they are exhausted and resource development is of no use.
(iii) Examples are minerals and fossil fuels, which once used are non-renewable.
|
Long Answer Type Questions
Q. 1. Classify Resources on different Basis.
Ans. Resources can be classified in the following ways:
1. On the basis of origin. biotic and abiotic.
2. On the basis of exhaustibility. renewable and non-renewable.
3. On the basis of ownership. individual, community, national and international.
4. On the basis of status of development. potential, developed, reserve and stock.
TYPES OF RESOURCES
1. On the basis of origin
- Biotic Resources. These are obtained from biosphere and have life such as human beings, flora and fauna, fisheries, livestock etc.
- Abiotic Resources. All those things which are composed of non-living things are called abiotic resources. For example, rocks and metals.
2. On the basis of exhaustibility
- Renewable Resources. The resources which can be renewed or reproduced by physical, chemical or mechanical processes are known as renewable or replenishable resources. For example, solar and wind energy, water, forests and wildlife, etc. The renewable resource may further be divided into continuous or flow.
- Non-renewable resources. Minerals and fuels are the examples of such resources. Some of the resources like metals are recyclable and some like fossil fuels cannot be recycled and get exhausted with their use.
3. On the basis of ownership
- Individual Resources. The urban people own plots, houses and other property. Wood lots, pasture lands, ponds water in wells etc. are some of the examples of resources ownership by individuals.
- Community owned Resources. There are resources which are accessible to all the members of the community. Village commons (grazing grounds, burial grounds, village ponds, etc.) and public parks, picnic spots, playgrounds in urban areas are de facto accessible to all the people living there.
- National Resources. All the minerals, water resources, forests, wildlife land within the political boundaries and oceanic area upto 12 nautical miles (19.2 km) from the coast termed as territorial water and resources there in belong to the nation.
- International Resources. The oceanic resources beyond 200 kms of Exclusive Economic Zone belong to open ocean and no individual country can utilise these without the concurrence of international institutions.
4. On the basis of state of development
- Potential Resources. Resources which are found in a region, but have not been utilised. For example, the western parts of India particularly Rajasthan and Gujarat have enormous potential for the development of wind and solar energy, but so far these have not been developed properly.
- 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.
- Stock and Reserve. Materials in the environment which have the potential to satisfy the human needs but the human beings do not have the appropriate technology to access these are included among stock.
- Reserves are the subset of the stock, which can be put into use with the help of existing technical ‘know how’ but their uses have been postponed for meeting the future requirements.
Q. 2. Describe briefly distribution of soils in India.
Or
Name the various type of soils of India. Discuss Alluvial soils.
Ans. Types of soils of India. The soils of India are classified into the following main groups, depending upon the rock cover and climate conditions.
1. Black Soils. Black soils are mainly found over the Deccan Lava tract (Deccan trap) including plateaus of Maharashtra, Madhya Pradesh, Saurashtra, Malwa, Chhattisgarh and Andhra Pradesh. These soils are found in river valleys of Narmada, Tapti, Godavari and Krishna. These soils are formed due to weathering of lava rocks. These are also called ‘Regur Soils’.
Suitability to Crops. These soils are most suitable for cotton cultivation and are known as ‘Black Soil or Cotton Soils’.
2. Red Soils. These soils are found in Chotta Nagpur plateau, Telangana, Nilgiris, Tamil Nadu Karnataka, Andhra Pradesh and areas on periphery of Deccan Plateau. The red colour of these soils is due to oxidation and diffusion of iron in hard metamorphic rocks.
Suitability to Crops. These are used for the cultivation of millets, pulses, linseed, tobacco etc.
3. Laterite Soils. Laterite has been derived from the Latin word ‘Later’ which means brick. Laterite soils are found on the highland areas of the plateau. These are found in Karnataka, Kerala, Tamil Nadu and hilly regions of Assam, Rajmahal hills and Chotta Nagpur plateau. The leaching of soils due to heavy rains washes away the silica and humus content in soils.
Suitability to Crops. The lowland laterite soils are useful for cultivation of foodgrains and other crops. The upland laterites are thin, coarse and infertile.
4. Alluvial Soils. These soils are the most widespread soils covering an area of 8 lakh sq. km. from Punjab to Assam (the entire northern plains). These soils have been deposited by sediments brought by rivers.
These soils are also common in the Eastern Coastal Plains. These soils have been deposited by the river valleys of Mahanadi, Godavari, Krishna and their deltas. These are deep and fertile soils. These are dark soils. These soils are suitable for cultivation of jute, sugarcane etc. These are of three types (according to their age)
(i) Khadar Soils. The finer and new alluvium deposited in flood plains is called Khadar Soils.
(ii) Bangar Soils. The older alluvium is known as Bangar Soils. The bangar soils have high concentration of Kanker.
(iii) Newest Alluvial Soils. The fine alluvium in deltas is known as newest alluvium soils. Suitability to Crops. These are fertile soils and ideal for the growth of sugarcane, paddy, wheat and pulse crops. These areas are intensively cultivated and densely populated.
5. Other Soils include desert soils, saline soils mountain soils and forest soils.
Q. 3. What is soil erosion ? What are the causes of soil erosion ? Describe the different types of soi erosion.
Or
Define soil erosion. Give its two main causes.
Ans. Soil Erosion. It is the destruction and removal of the top soil by running water, wind, etc. Soil erosion has become a serious problem in many areas. Soil formation is a slow process and takes thousands of years to develop soils, but it may be removed in a matter of a few years. Soil erosion results from the following causes :
Causes of Soil Erosion
- Steep slopes. Steep slopes affect the rapidity of running water. On steep slopes, intensity of soil erosion increases.
- Torrential rainfall. Heavy rainfall loosens the soil particles and scoops out the soil forming gullies and ravines. This gives rise to a dissected surface called badland as in Chambal Valley of India.
- Strong winds. Winds and dust storm blow away soil in dry areas. This process is known as deflation.
- Over-grazing. Due to over grazing, the vegetation becomes too thin to protect the soil. Rain and wind can easily erode the loose soil.
- Over-cropping. Crop rotation maintains soil fertility. But over-cropping and shifting cultivation renders soil infertile.
- Deforestation. Deforestation means the removal of forest cover and it exposes the area to soil erosion. Reckless cutting of trees has resulted in soil erosion along the Siwalik hills. Human misuse of the land through wrong farming practices, desforestation, etc. leads to the removal of soil cover.
Types of Soil Erosion :
- Sheet Erosion. When the soil is washed away in thin layers by water or wind, it is called Sheet Erosion. Fine silt and clay is removed from the top soil.
- Gully Erosion. It is done by running water by cutting channels. Gullies and ravines are formed by rapid run off. Bad land is formed over clay soils in Chambal Valley.
Q. 4. Write a short note on conservation of soils.
Or
Suggest two measures to conserve soil and natural vegetation in western Rajasthan.
Or
Define soil erosion. What steps can be taken to control soil erosion in hilly areas ?
Ans. Soil Erosion. It is the destruction and removal of the top soil by running water, wind, etc. Soil erosion has become a serious problem in many areas. Soil formation is a slow process and takes thousands of years to develop soils, but it may be removed in a matter of a few years. Soil erosion results from the following causes :
Causes of Soil Erosion
- Steep slopes. Steep slopes affect the rapidity of running water. On steep slopes, intensity of soil erosion increases.
- Torrential rainfall. Heavy rainfall loosens the soil particles and scoops out the soil forming gullies and ravines. This gives rise to a dissected surface called badland as in Chambal Valley of India.
- Strong winds. Winds and dust storm blow away soil in dry areas. This process is known as deflation.
- Over-grazing. Due to over grazing, the vegetation becomes too thin to protect the soil. Rain and wind can easily erode the loose soil.
- Over-cropping. Crop rotation maintains soil fertility. But over-cropping and shifting cultivation renders soil infertile.
- Deforestation. Deforestation means the removal of forest cover and it exposes the area to soil erosion. Reckless cutting of trees has resulted in soil erosion along the Siwalik hills. Human misuse of the land through wrong farming practices, desforestation, etc. leads to the removal of soil cover.
Types of Soil Erosion :
- Sheet Erosion. When the soil is washed away in thin layers by water or wind, it is called Sheet Erosion. Fine silt and clay is removed from the top soil.
- Gully Erosion. It is done by running water by cutting channels. Gullies and ravines are formed by rapid run off. Bad land is formed over clay soils in Chambal Valley.
Soil Conservation. Soil is a fundamental natural resource. Soil formation is a slow process, but it is easily lost by soil erosion. In fact, more soil is being lost each year than nature makes. Soil erosion must be checked. Sound farming practices and measures be adopted to conserve, protect, renew and maintain soil fertility. These methods constitute soil conservation.
- Afforestation. In some areas, the original vegetation cover has been removed such as in Shiwalik hills. In such areas afforestation and reforestation is needed to hold the soil. Advance of desert can be checked by planting trees along the margins of deserts.
- Controlled grazing. The number of cattle to be grazed on slopes should be according to the carrying capacity of the pastures.
- Terraced agriculture. Slopes must be cut into a series of terraces (fields) for cultivation so as to slow down the flow of rain water.
- River dams. River dams are built in the upper course of rivers to control floods and check soil erosion.
- Contour ploughing. Contour ploughing, terracing, and bunding is done to check soil wash on slopes. Ploughing is done at right angles to the hill slopes.
- Crop rotation. Crop rotation system be applied and the land should be allowed fallow for some time. Soil fertility can be maintained in this way.
- Other methods. In areas of heavy rain, basin type of cultivation be adopted. Tall trees should be grown as wind breaks and shelter belts in areas of strong winds. Strip cropping restricts soil erosion.
Q. 5. Identify any one of the causes of land degradation.
Or
What is meant by land degradation ? How does industry cause land degradation ?
Ans. The land which has depleted its value chiefly soil-resource value is called landdegradation. The industry causes land degradation through following acts :
- Mining. Mining, chiefly open cast mining or surface mining leads to degradation. Mining leads to abandonment of site or settlements, roads, factories which all lead to depletion of vegetation and consequently land degradation.
- Mineral processing like grinding of limestone, quarrying and crushing of stones raise dust in atmosphere leading to environment degradation.
- Land fills. Industries dump many non-degradable, toxic or radioactive wastes in landfills. These wastes cause greater damage to soil.
- Effluents. Industries release many effluents in water bodies or in atmosphere. These effluents cause pollution of various types. Hence, land degradation.
- Deforestation. Industries need land for setting up factories, townships, roads, buildings, etc. which ultimately lead to pressure on forest land and hence, deforestation. About 28 per cent of total degraded land belongs to this category.
Q. 6. ‘Land is an important natural resource.’ Explain with reference to India.
Ans. Importance of Land Resource :
- We live on land. We perform our economic activities on land.
- Land supports natural vegetation, wildlife, human life, transport and communication systems.
- Land is an asset of a finite magnitude, therefore, it is important to use the available land for various purposes with careful planning.
- India has land under a variety of relief features, namely; mountains, plateaus, plains and islands.
- About 43 per cent of the land area is plain, which provides facilities for agriculture and industries.
- Mountains account for 30 per cent of the total surface area of the country and ensure perennial flow of some rivers, provide facilities for tourism and ecological benefits.
- About 27 per cent area of the country is the plateau region. It possesses rich reserves of minerals, fossil, fuels and forests.
- We use land is different ways. Thus land is an important natural resource.
Data about degraded land is given below :
Total degraded land : 130 million hectares
Forest degarded area : 28%
Water eroded : 57 %
Wind eroded : 10 %
Salinity and alkalinity : 5%
Total : 100 %
Q. 7. Write a detailed note on conservation of resources with special reference to marine and mineral resources.
Ans. Conservation of Resources. Man depends upon its environment to meet his needs. He uses water, land, soil, vegetation, etc. to satisfy his needs. Man is using these resources at such an alarming rate that there will be serious shortage of these resources in the near future. Natural resources are of a very limited supply. So conservation of resources is essential for the survival of man.
To some people conservation means that the available resources should not be used. These should be held back. But conservation of resources means a careful and rational utilization of resources. These resources should be used intelligently for the welfare of mankind. It means a careful control and management of resources so that these may be used for the benefit of future generations also. These should be preserved from rickless exploitation and wanton destruction. These resources should not be wasted in a short time. The resources should be maintained in a healthy condition for their use so as to achieve a high standard of living for mankind.
Importance. Conservation of all resources has an economic, scientific and aesthetic value for mankind.
- Conservation of resources is necessary as these are the basis of economic activities of man.
- Resources must be conserved to meet the different human needs.
- Conservation of resources is essential as life depends on these useful elements of environment such as air, water, soil, rocks, forests and water bodies.
- Many areas of the world are still under-developed because the resources of these areas have not been used in a planned and rational manner.
MAP SKILLS
Q. 1. Four features with Serial No. (i), (ii), (iii) and (iv) are marked on the given outline map of India. Identify these features with the help of the following information and write their correct names on the lines marked in the map.
(i) An area suffering from erosion.
(ii) An area where gully erosion occurs.
(iii) An area where deforestation causes soil erosion.
(iv) An area suffering from wind erosion.
Ans.
Q. 2. On the map of India, locate and mark the types of soils found in India.
Ans.
Q. 3. Study the given map (i), (ii), (iii), (iv) carefully. Identify and name the soil type shown in each map.
Ans.
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