STD 6 Social Science: Chapter 12 Gift of Nature - Questions and Answers | Teaching Manual 


Study Notes for Class 6 Social Science (English Medium) പ്രകൃതിയുടെ വരദാനം | Text Books Solution Social Science: Chapter 12 Gift of Nature | Teaching Manual & Teachers Handbook
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Chapter 12: Gift of Nature - Questions and Answers & Model Questions
1. Which was described as the richest country in the world by the international journal 'National geographic’ in 1976?
Answer: Nauru, is a small island in the Pacific.

2. Nauru was once rich because of its -------------------
Answer: Mineral resources

3. What are resources?
Answer: Those things useful to man are called resources.

4. What are natural resources?
Answer: The things directly obtained from nature and are to man are called natural resources. 
Eg: air, sunlight, wind, trees, water, minerals etc.

5. Find out more examples for natural resources. Also mention their uses.
Answer: 
• Water-essential for the existence of life.
• Air- essential for the existence of life.
• Sunlight - essential for the growth of plants and animals.
• Iron core - production of iron.
• Rocks - construction of buildings
• Wind - For the production of electricity. 
• Animals - For flesh, leather and milk. 
• Plants - For the food of herbivores. 
• Rivers - For irrigation and electricity.
• Trees - For the production of paper and furniture.

6. What are biotic resources?
Answer: The living resources are called biotic resources. 
Eg: Plants, Animals, Trees, etc.

7. What are abiotic resources?
Answer: The non–living resources are called abiotic resources. 
Eg: Soil, Water, Sunlight, Wind, etc.

8. What are renewable resources and non-renewable resources.
Answer: Renewable resources are those resources which do not exhaust even after repeated use.
Eg: water, air, sunlight, wind, soil etc.
 
Some resources get exhausted due to their uncontrolled use by human beings. Such resources are called non-renewable resources.
Eg: Coal, Petroleum, minerals etc

9. Categorise the given resources as ever available and exhaustible in the given format (Table 12.1).
10. What is resource Decrease resource depletion?. 
Answer:  Decrease in the availability and decline in the quality of resources due to reckless usage is called resource depletion.
Major causes of resource depletion are:
• Overpopulation
• Deforestation
• Pollution
• Natural calamities.
• Industrial and technological development

11. The first earth summit occurs at---------in Brazil in -----------
Answer: Rio de Janeiro, 1992

12. 
 I am afraid to go out in the sun now because of the holes in the ozone.  I am afraid to breathe the air because I don't know what chemicals are in it…
…….the great herds of wild animals, jungles and rainforests, full of birds and butterflies, but now I wonder if they will even exist for my children to see.
Did you have to worry about these little things when you were at my age?
……yet we act as if we have all the time we want and all the solutions………but I want you to realise neither do you! …………………………………………………………….........
You don't know how to bring salmon back up a dead stream.
………………………………………………………………………………………….
And you can't bring back forests that once grew where there is now desert.
If you don't know how to fix it, please stop breaking it!
…………………………………………………………………………………………..
The lines you read above are excerpts from a speech given at the first UN Earth Summit in Rio de Janeiro in Brazil in 1992. Listening to Severn Cullis Suzuki, a 12-year-old girl from Canada, the representatives of various countries who attended the summit were left speechless.
What are the worries shared by the girl in her speech?
Answer:
• Air subjected to pollution
• Forests subjected to destruction
• Animals facing the threat of extinction
• Holes in the ozone

13. Which is the bird that became extinct, because of the reckless exploitation of resources by man?
Answer: Dodo

14. Who are the inhabitants of the Mauritius islands?
Answer: Dodo birds

15. Where is Mauritius island?
Answer: In the Indian ocean.

16. Why dodo birds became extinct? 
Answer: They were killed extensively for meat.

17. Which are the other animals that are now extinct?
Answer: Auroch cattle, Asian Cheetah

18. Observe the pictures given. What will be the consequences of man's reckless use of resources? Write footnotes for these pictures.
Answer:  
19. What will happen if water, soil, petroleum and forests disappear from the earth? Discuss.
Answer:
• Water:- Water is one of the most indispensable factors for the existence of flora and fauna of the earth. It is believed that life evolved first in the water. If the water disappears from the earth, the life on the earth will also disappear.
• Soil:- Vegetations would not exist without soil. If there is no vegetation, there will no animals.
• Petroleum:- The existence of transport, industry and even the economy is based on petroleum. If petroleum disappears, transport, industries and the economy will collapse.
• Forest:- Forests play a vital role in maintaining the equilibrium amount of oxygen and carbon dioxide in the atmosphere. If the forests disappeared, the equilibrium of the environment will destroy.

20. What is resource conservation?
Answer: Resource conservation is the controlled use and protection of natural resources

21. What is the fundamental principle of resource Conservation 
Answer: Judicious and careful use of resources as well as giving enough time for them to replenish and conserve the natural resources." This is the fundamental principle of resource conservation.

22. Discuss how the situation shown in each of the pictures contribute to resource conservation.
• Picture 1: Cycling -The use of fossil fuels such as petrol and diesel will reduce. There will be no atmospheric pollution.
• Picture 2: Solar energy panel - There will be no environmental pollution. 
• Picture 3: Paper bags - Excessive use of plastic is prevented and nature is protected.
• Picture 4: Trees are planted - The environment is protected. Availability of resources for the future generation.
• Picture 5: Windmills - By using this resource energy conservation becomes possible.

22. World environment day celebrates on ------------
Answer: 5th June

23. World earth day celebrates on ---------------
Answer: 22nd April

24. Worksheet
Connect the columns in the respective order of activities indicating overuse of resources, the type of resources depleted by such activities, and the remedial measures (Table 12.2). More remedial measures may be added. (TextBook Page: 178)
Answer:
i. Water Resource (Water Bodies)
• Don't waste fresh water
• Practice water conservation measures such as rainwater harvesting
• Protect rivers and wetlands.

ii. Forest Resource (Forests)
• Prevent deforestation
• Plant trees in barren lands
• Reduce the use of paper. 
• Promote afforestation.

iii. Air Resource (Atmosphere)
• Make use of public transport
• Use fuels that do not cause atmospheric pollution
• Walk or use a cycle for short distances.

iv. Energy Resources (Sources of energy)
• Switch off electrical equipment and lights when not in use.
• Depend more on non-conventional energy sources such as sunlight, wind, etc.
• Avoid outdated electrical appliances

25. You might have understood that the natural resources are limited
and hence they are to be conserved. Resource conservation, what is your viewpoint? 
Answer:
• Natural resources are limited.
• They are to be conserved.
• We have the right to use essential resources.
• We don't have the right to use the resources recklessly.
• We should use the resources considering the need of future generations.
• wise use of resources should be our motto.

26. Write down the names of the acts which enable the protection of natural resources?
Answers: 
• Nature Conservation Act.
• Water Act
• Forest Conservation Act
• Air act etc.

27. The people's movement for the conservation of the Periyar River in ......... led to the establishment of the Water Authority.
Answer: 1999

28. What are the laws enacted in Kerala regarding the conservation of resources?
Answer: Act for Protection of Paddy Fields, Act for Protection of Wetlands.

29. What is sustainable development? Which are the means to sustainable development?
Answer: 
• Development that meets the needs of the present without compromising the right of future generations to fulfil their needs is termed as sustainable development.
• Recycling and reusing of resources as well as reducing their use are the means to sustainable development.

30. "Earth provides enough to satisfy every man's needs, but not every man's greed." Whose words?
Answer: Gandhiji

31. What to Do for Sustainable Development?
Answer:
• Use the wastewater from the kitchen for watering plants.
• Plant trees in public places.
• Use non-conventional energy sources such as solar energy, wind energy, etc. to the maximum.
• Ensure steps for rainwater harvesting.
• Use cloth bags instead of plastic carry bags.
• Use vehicles such as cycles, that do not create any environmental pollution.

32. What should one do to reduce energy consumption?
Answer:
Reduce energy consumption by
• Use LED bulbs instead of ordinary bulbs.
• Use fan and lights only when needed.
• Using only energy-efficient electrical equipment.
• Unplug electric devices when they are not in use
• Utilise maximum solar energy

33. 'River is a resource.' Do you agree with this? Substantiate your answer.
Answer: River is a natural resource. Those things which are useful to man are called resources. River becomes a resource when is utilised for irrigation, transportation, producing electricity etc.

Let us assess
1. Raghavan is a farmer practising traditional methods of farming using bio manure, ploughing the field using cattle, etc. List out the types of natural resources Raghavan makes use of. Also define natural resource.
Answer: The types of natural resources Raghavan makes use of are Sunlight, Soil, Water, Wind, Cattle etc.
Natural resource: The things directly obtained from nature and are useful to man are called natural resources

2. Categorise the following natural resources into biotic and abiotic.
Forest, sunlight, fish, wind, cattle, water
Answer:
Biotic: fish, cattle, Forest
Abiotic: sunlight, wind, water

3. Given below are the features of two motor cars. Identify the characteristics of each and categorise in the following format.
Car A -  Works on solar energy
Car B -  Works on petrol
Characteristics:
1. Does not cause atmospheric pollution
2. Uses non-renewable resource as fuel
3. Causes increase in the level of carbon dioxide in the atmosphere.
4. This kind of cars are largely in use
5. Such cars are not used much
6. Uses renewable resource as fuel
 Car A  Car B 
 • Does not cause atmospheric pollution 
 • Such cars are not used much
 • Uses renewable resource as fuel		 • Uses non-renewable resource as fuel
 • Causes increase in the level of carbon dioxide in the atmosphere.
 • This kind of cars are largely in use
Which of these cars is nature friendly? Substantiate your answer.
Answer: Car A which works on solar energy is nature friendly. It uses solar energy instead of petrol that is, it uses renewable resources to work. It does not cause atmospheric pollution. Therefore it is nature friendly.

4. Make inferences by analysing the statement 'We have loaned the resources from the future generations'. Also, suggest any five measures for resource conservation.
Answer:  The above sentence clearly says the current situation. Nature gifts everything to us. Natural resources are essential for our day-to-day life. But when we use resources without any limit it causes exhaustion of resources. All these resources are needed for our future generations as well. But now resources are recklessly used by men without conserving them for future generations. so we have to conserve resources for the future generation.
Five measures for resource conservation
• Use fuels that do not cause atmospheric pollution
• Practice water conservation measures
• Depend more on non-conventional resources such as sunlight, wind etc.
• Prevent deforestation
• Use resources only if essential





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