Class 10 Science Chapter 16 Management of Natural Resources The answer to each chapter is provided in the list so that you can easily browse throughout different chapters NCERT Class 10 Science Chapter 16 Management of Natural Resources and select need one.
Class 10 Science Chapter 16 Management of Natural Resources
Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam Board Class 10 Science Chapter 16 Management of Natural Resources Solutions for All Subjects, You can practice these here…
Management of Natural Resources
Chapter – 16
GENERAL SCIENCE
TEXTUAL QUESTIONS AND ANSWERS
Page No – 269
Q.1. What changes can you make in your habits to become more environment friendly?
Ans :- We can make the following changes in our habits to become more environment friendly.
( i ) Spitch of the lights, fans, T.V. geyser and other electrical appliances when not needed.
( ii ) Stop using polythene bags and start using bags mach of cloth or jute.
( iii ) Start going to mean by school a bicycle instead of asking parents to drop us on scooter or car.
( iv ) Stop using any products made of animal skin, fur or ivory.
( v ) Collect used articles made of paper, plastic, glass and send them for recycling.
Q.2. What would be the advantage of exploiting resources with short term – aims?
Ans :- Exploiting the natural resources with short term aims would be too much beneficial for the present generation but no resources will be left for the needs of future generations. On the other hand the management of natural resources on a long term perspective will meet the basic needs of the present generation and also ensure that sufficient natural resources are left for the needs of future generation.
Q.3. How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
Ans :- Exploiting the natural resources with short-term aims would be too much beneficial for the present generation beet no resources will be left for the needs of future generation. On the other hand, the management of natural resources on a long-term perspective will meet the basic needs of the present generation and also ensure that sufficient natural resources are left for the needs of future generation.
Q.4. Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Ans :- Presently rich and influential people are getting maximum benefit and share of resources. Equitable distribution will benefit both poor as well as rich people.
Power and money are the two forces which are working against and equitable distribution of resources.
Page – 273
Q.1. Why should be conserve forests and wild life?
Ans :- Because :- ( i ) They are essential for ecological balance.
( ii ) They maintain biological diversity.
( iii ) Prevent flood and also influence rainfall.
Q.2. Suggest some approaches towards the conservation of forests.
Ans :- ( i ) The indiscriminate and unauthorised cutting of forest trees for timber trade and firewood should be curbed immediately.
( ii ) Plantation of tree.
( iii ) Overgrazing of forest vegetation by the cattle of local people should be prevented.
( iv ) Measures should obe taken to prevent and control forest fires.
Page – 276
Q.1. Find out about the traditional systems of water harvesting / management in your region.
Ans. The traditional system of water harvesting in our region are ponds and lakes where rain water is stored.
Q.2. Compare the above systems with the probable systems in hilly/mountainous areas or plains mor plateau regions.
Ans :- Dams are built over rivers in hilly/mountainous areas. They are more advantageous because to store running river water which can be used to generate electricity. Moreover, since the water stored in dam keeps flowing to turn the turbines, it does not act as a breeding ground for mosquitoes which spread malaria. The stagnant water in ponds and cakes, however, becomes a breeding ground for mosquitoes.
Q.3. Find out the source of water in your region/locality is water from this source available to all people living in that area?
Ans :- The main source of water in a city like Guwahati is river. Water in Guwahati comes from river Brahmaputra which is then treated and is supplied to the residents through a system of water pipes. Some water is also taken from the ground through bore-wells. This water is not available to all living in some areas not approved by municipal authorities. In these areas, the ground water is the main source which is obtained through hard pumps and tubewells.
In villages and distant areas, the source of water are river, wells, lake and ponds.
EXERCISE
Q.1. What changes would you suggest in your home in order to be environment friendly?
Ans :- ( i ) Use CFLS instead of traditional filament type electric bulbs :
( ii ) Useless of plastic.
( iii ) Use solar cooker to cook food whenever possible.
( iv ) Eat as much you required but do not waste food.
( v ) Use water judiciously.
Q.2. Can you suggest some changes in your school which would make it environment friendly?
Ans :- ( i ) Enough trees can be planted in the school.
( ii ) School buses should be run on CNG instead of diesel.
( iii ) Rain water harvesting should be done to recharge ground water.
( iv ) Water should not be wasted, electricity can be saved, paper can be reused by using it in various crafts.
Q.3. We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?
Ans :- The four main stakeholders in the management of forests and wildlife are :
( i ) The local people who live in and around the forest.
( ii ) The forest department of the Government.
( iii ) The small and big industrialists who use forest produce but are not dependent on a forest in any one area.
( iv ) The forest and wildlife activists who want to save forests. The local people who live in and around the forest area should have the authority to decide the management of forest produce. This is because the local people are well versed in the practices to use the forest produce in a sustainable manner as they have been using the forest and wildlife resources since the ancient times without causing any damage to the environment.
Q.4. How can you as an individual contribute or make a difference to the management of
( a ) Forests and wild life.
( b ) Water resources and
( c ) Coal and petroleum?
Ans :- ( a ) Forests and wild life :- Cutting of trees will not be allowed. The products make from animal skin, fur or ivory will not be used.
( b ) Water resources :- Save water in house, install a system of rain water harvesting in house.
(c) Coal and petroleum :- Save electricity and useless of it; install electrical gadgets that useless power.
Q.5. What can you as an individual do to reduce your consumption of the various natural resources?
Ans :- One should follow the practice such as save electricity; follow the principles of three R’s i.e. reduce, recycle and reuse, do not waste food, save water, use cooking gas instead of wood for cooking.
Q.6. List five things you have done over the last one week to :
( a ) Conserve our natural resources.
( b ) Increase the pressure on our natural resources.
Ans :- The five things done by me over the last one week conserve our natural resources were :-
( i ) Replaced all the filament type bulbs by CFLS.
( ii ) Save electricity by switching off unused lamps and fans.
( iii ) Installed a solar water heater to obtain hot water.
( iv ) Used public transport for school instead of parent’s car.
( v ) took part in community awareness meetings regarding environmental conservation.
( b ) The five things done by me over the last one week which increased the pressure on our natural resources were :
( i ) Forgot to switch off light in my room once before going to sleep.
( ii ) Used more paper them required for printing on my computer.
( iii ) Wasted food.
( iv ) Did not close the tap while brushing the teeth one day.
( v ) Wasted petrol by unnecessarily starting the motorbike.
Q.7. On the basis of the issues raised in this chapter, what changes would you incorporate in your life-style in a move towards a sustainable use of our resources?
Ans :- ( i ) Walking on foot or riding a bicycle to go to nearby market or other nearby places.
( ii ) Put on an extra sweater on a cold day rather then use a room heater.
( iii ) Switch off the lights, fans, TV, geyser and other electrical appliances when not needed.
( iv ) Use solar cooker and solar water heater.
( v ) Recycle products made of paper, plastics, glass and metals.
Additional Questions and Answers
Q.1. What is natural resource? Give examples.
Ans :- Anything in the environment which can be used is called a natural resource.
Example :- Forests and wildlife, water, coal and petroleum.
Q.2. What do you mean by management of natural resources?
Ans :- A system of controlling the use of natural resources is such a way as to avoid their wastage and to use them in the most effective way is called management of natural resources.
Q.3. Why do we need to manage our resources?
Ans :- We need to manage our natural resources because of the following reasons :-
( i ) The resources of the earth are limited.
( ii ) The proper management of natural resources taken into Consideration long-term perspective and prevents their exploitation to the hilt for short-term gains.
( iii ) natural resources so that all the people can benefit from the The proper management can ensure equitable distribution of development of these resources.
( iv ) The proper management will take into consideration the damage caused to the environment during the ‘extraction’ or ‘use’ of the natural resources and find ways and means to minimise this damage.
Q.4. Define forests and wildlife.
Ans :- A large area of land on which trees and other plants grow naturally is called a forest. The wild animals and birds which live in a forest are called wild life.
Q.5. Write the advantages of silviculture program?
Ans :- ( i ) It produces a large quantity of raw materials for industry.
( ii ) It increases the area of earth under forests.
( iii ) It maintains a perfect water cycle in nature.
( iv ) It prevents soil erosion.
( v ) It prevents floods.
Q.6. How dams are useful for the society?
Ans :- Dams are useful for the society in the following ways :
( i ) Water from a dam is used for irrigation in fields through a network of canals.
( ii ) Water from a dam is supplied to the people in towns and cities through pipelines after suitable treatment.
( iii ) The falling water from the dam is used for generating electricity.
Q.7. Write four advantages of water stored in the ground.
Ans :- ( i ) The water stored in ground does not evaporate.
( ii ) The water stored in ground spreads out to recharge wells and provides moisture for crops over a wide area.
( iii ) The water stored in ground does not promote breeding of mosquitoes.
( iv ) The water stored in ground is protected from contamination by human and animal wastes.
Q.8. Name two fossil fuels.
Ans :- Coal and petroleum.
Q.9. What is the name of the process in which rain water falling on the earth is stopped from flowing and made to percolate into the ground?
Ans :- Rain water harvesting.
Q.10. Name the most common practice of recharging ground water.
Ans :- Rain water harvesting.
Q.11. State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
Ans :- False.
Q.12. Choose one term from the following which include all others :
Coal, natural gas, fossil fuels, petroleum.
Ans :- Fossil fuels.
Q.13. Name a clean gaseous fuel other than LPG and natural gas.
Ans :- Bio gas.
Q14. Fill in the blanks :
( a ) LPG is a ———- fuel but biogas is not a ——– fuel.
( b ) Glaciers are source of ————.
( c ) One of the main aim of management of forests and wildlife is to conserve the ———– which we have inherited.
( d ) When a fuel burns in an insufficient supply of air, then some poisonous gas called ———— is also produced.
Ans :- ( a ) Fossil, fossil.
( b ) Water.
( c ) Biodiversity.
( d ) Carbon monoxide.
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