Class 10 Sustainable Management of Natural Resources
Chapter 16: Sustainable Management of Natural Resources
Water Conservation and Fossil Fuels
Very Short Answer Type Questions [1 Mark]
Q.1. Define the term natural resources.
Ans. Anything in the environment which can be used is called natural resources. e.g., Air, Water, Soil, Minerals, Coal, Petroleum, Forest etc.
Q.2. Define the term ‘conservation of environment’.
Ans. It is a sensible use of natural resources (like air, water, soil, forests etc.) in order to avoid excessive degradation and to keep the environment safe.
Q.3. Name the bacteria found in the human intestine.
Ans. Coliform bacteria are found in the human intestine.
Q.4. Which is the easiest method to detect water pollution?
Ans. pH detection using the universal indicator.
Q.5. What is coliform?
Ans. Group of bacteria, that are found in human intestines is known as coliform.
Q.6. Define recycling. Give one example.
Ans. Recycling is the act of converting waste materials for use in creating new products. For example-use of shopping bags made of cloth or jute which can be used over and over again.
Q.7. Name 4 substances that can be recycled.
Ans. Glass, plastics, metals and paper.
Q.8. Why is it necessary to conserve our environment?
Ans. Conservation of the environment is required for preventing damage to the environment and depletion of natural resources.
Short Answer Type Questions — I [2 Marks]
Q.1. What is GAP? Explain.
Ans. GAP is the Ganga Action Plan which was initiated in 1985 to restore the quality of water of the river Ganga. To reduce the domestic load on the Ganga under the Ganga Action Plan, some of the schemes are :
(A) Interception and diversion.
(B) Treatment of wastewater
(C) Riverfront development
(D) Electric crematorium.
Q.2. Why are environmentalists insisting on sustainable natural resource management? Give any three reasons.
Ans. Environmentalists are insisting upon sustainable natural resource management to
(i) ensure equitable distribution of resources.
(ii) encourage forms of growth that meet current basic human needs while preserving the resource for the future generation.
(iii) ensure judicious use of resources as they are limited.
Q.3. Write steps to conserve energy.
Ans. Steps of conservation of energy :
(a) Make use of stairs instead of the lift.
(b) Make a habit of switching off lights, fans and other appliances when not in use.
(c) Solar heater, solar cooker, solar light should be used to cut down energy consumption.
(d) Soak the pulses rice in water before cooking. This saves fuel on cooking.
Q.4. Mention two causes of over-exploitation of natural resources.
Ans. 1. Increased population requires more resources
2. Wastage – people do not use the resources judiciously.
Q.5. Why has it become necessary to take care of inexhaustible energy resources?
Ans. We should look for inexhaustible resources to :
(a) reduce pressure on exhaustible natural resources.
(b) reduce pollution.
Q.6. What is the difference between exhaustible and inexhaustible natural resources?
Ans. Difference between exhaustible and inexhaustible natural resources :
Q.7. What do you mean by conservation and management?
Ans. Conservation: It is the preservation of loss, waste and degradation of resources so as to last indefinitely.
Management: Management of resources is controlling its use in such a way as to provide sustained and equitable availability.
Q.8. What is the advantage of exploiting resources with short term aim?
Ans. The advantages of exploiting resources with short term aim will be self-centred satisfaction. They provide immediate advantages.
Q.9. List any four suggestions you would recommend to your friends to make them more environmentally friendly.
Ans. The following changes can be made in our habits to become more environment-friendly :
(i) By using the principle of 3R’s i.e., Reduce, Reuse and Recycle.
(ii) Always separate the biodegradable and non-biodegradable waste.
(iii) Plastic, paper, or glass must be recycled or reused and should not be dumped with other wastes.
(iv) Switch off the electrical appliances when not in use, avoid wastage of energy, water and food.
Q.10. Why should biodegradable and non-biodegradable waste be collected in two separate dust bins?
Ans. Biodegradable wastes can be properly recycled for future use.
If biodegradable and non-biodegradable wastes are collected in the same dustbin, then the non-biodegradable waste will make the biodegradable waste unfit for recycling. It will also interfere with the process of recycling.
Q.11. If all the waste we generate is biodegradable, will this have no impact on the environment?
Ans. It will have only a short term impact on the environment. The action of decomposers will slow down and some air/water pollution will be caused. However, in the longer term, there will be no impact of biodegradable waste on the environment.
Short Answer Type Questions — II [3 Marks]
Q.1. Explain in detail the three R’s in the process of saving the environment.
Ans. For the management of waste in a very natural way, three R’s that is reuse, recycle and reduce should be followed :
(a) Recycle: It is the act of processing used materials for use in creating new products. For ex-use of shopping bags made of cloth or jute
(b) Reuse: Using things again and again. It is better than recycling as some energy is also used in recycling which is not required at all in reuse.
(c) Reduce: Either reduce the generation of unnecessary waste or useless.
Q.2. What can you do as an individual to reduce the consumption of various natural resources and help in environmental conservation?
Ans. (a) Follow 3 R’s(reduce, recycle, and reuse)
(b) Wastage of paper and water needs to be reduced.
(c) Extra food should be given to the poor instead of throwing it away.
(d) Plastic, polythene, metal cans can be recycled.
(e) Wastage of electricity, petrol, diesel, LPG need to be prevented.
Q.3. List three things which increase pressure on our natural resources.
Ans. (a) More paper is used than required for printing.
(b) Keeping the fan on when there is no one in the room.
(c) Wastage of food.
(d) Burning of crackers.
(e) Wastage of petrol by unnecessarily keep starting the vehicles.
Q.4. Name the stakeholders of forests.
Ans. Stakeholder of forest are :
(a) The local people who are living in or around the forests.
(b) The department of the forest of the government.
(c) The industrialists
(d) The wildlife and nature enthusiasts
Q.5. What are different ways to reduce consumption of the various natural resources?
Ans. (a) Spread awareness about the need for conservation.
(b) Install a system of rainwater harvesting.
(c) Follow three R’s- reduce, reuse and recycle.
Q.6. What changes can you make in your habits to become more environmentally friendly?
Ans. (a) Separate wastes into recyclable and non- recyclable.
(b) Use electricity judiciously.
(c) Follow three R’s (reduce, recycle and reuse).
(d) Eat as much as require do not waste food.
(e) Use water judiciously.
(f) Reuse newspapers and use less plastic.
(g) Have more windows in the house for natural light.
Q.7. In the context of conservation of natural resources, explain the terms reduce, recycle and reuse. From among the materials that we use in daily life, identify two materials for each category.
Ans. Reduce means to use a material/commodity in lesser quantity, e.g., electricity and water.
Recycle means a material that is used once is collected and sent back to a manufacturer so that they can make some other useful material from it :
e.g., plastic cups and buckets, glass tumbler, paper, metal objects.
Reuse means using a thing over and over again instead of throwing it away. It does not involve the process of recycling either in small or large scale: e.g., used envelopes, plastic carry bags, bottles of jam.
Q.8. Prepare a list of five activities that you perform daily in which natural resources can be conserved or energy utilisation can be minimised.
Ans. The activities are given below :
(a) Unused water in the water bottle may be used for a watering plant.
(b) Close all the taps before you go to sleep.
(c) Avoid using a hosepipe for watering plants
(d) Wash vehicles only when they are dirty
(e) Use fan and light only when required
(f) Use solar water heating devices
(g) Use LED in place of conventional bulbs/tubes.
Q.9. We often observe domestic waste decomposing in the by-lanes of residential colonies. Suggest ways to make people realise that the improper disposal of waste is harmful to the environment.
Ans. Some of the ways to make people realize that the improper disposal of waste is harmful to the environment are :
(a) Improper disposal of waste will serve as a breeding ground for mosquitoes and will create favourable conditions for the spread of various diseases.
(b) Improper disposal of waste will release harmful gases into the environment. It will make the environment unclean and unhygienic for the normal living of the organisms.
(c) The waste will flow to water bodies along with the rainwater and become a threat to aquatic organisms.
Long Answer Type Questions [5 Marks]
Q.1. Prepare a list of activities that you perform daily in which natural resources can be conserved or energy utilisation can be minimised.
Ans. We can perform the following activities to conserve or minimise the use of natural resources :
(i) Stop misuse of water.
(ii) Stop misuse of electrical energy.
(iii) Maximise the use of solar energy.
(iv) PUC check for cars regularly.
(v) To make others aware of environmental conditions.
(vi) Say ‘No’ to plastic bags.
(vii) Segregate waste as biodegradable and non-biodegradable.
(viii) Compost organic wastes.
(ix) Stop burning garbage.
(x) Reduce paper consumption.
(xi) Not to litter.
(xii) Avoid chemical pesticides and other toxic substances.
(xiii) Give emphasis on three R’s — Reduce, Recycle and Reuse.
(xiv) Use manure instead of fertilisers.
(xv) Walk short distances instead of using a personal vehicle.
Q.2. (a) In the context of conservation of natural resources, explain the terms reduce, recycle and reuse.
(b) Why is the conservation of water necessary? State any four reasons.
Ans. (a) (i) Reduce: Less use of natural resources/avoid wastage of food, water, electricity etc.
(ii) Recycle: Collection of materials like plastic, glass, metals, paper etc. and recycle these materials to make required items instead of synthesizing fresh ones. This would save natural resources.
(iii) Reuse: Still better than recycling as no energy is required here and the already used things/items are used again and again.
(b) (i) Essential for living organisms.
(ii) It has limited availability.
(iii) Conservation of water allows its equitable distribution.
(iv) Essential for sustainable development.