NCERT solution Class 10 water resources

NCERT Solutions

Class 10 Social Science

Water Resources

NCERT Questions

Q2.

Answer the following questions in about 30 words.

(i) Explain how water becomes a renewable resource.

(ii) What is water scarcity and what are its main causes?

(iii) Compare the advantages and disadvantages of multi-purpose river projects.

75 percent of the earth’s surface is covered with water, but only a small proportion of this water accounts for freshwater which can be used by us. This freshwater is mainly obtained from rain, surface run off and ground water that is continuously being renewed and recharged through the water cycle or hydrological cycle which includes three basic processes – evaporation, condensation and precipitation. All water moves within the hydrological cycle which is never ending and which ensures and proves that water is a renewable resource.

Water scarcity can be defined as the shortage of water or unavailability of water to match the demand but it is not only associated with regions having low rainfall or those that are drought-prone. Different places have different availability of water mainly due to the variations in seasonal and annual precipitation. Mostly water scarcity is caused by

a. Overexploitation or increase in population

b. Excessive use of water which includes waste of water and

c. Unequal access to water among different social groups living in that area.

Advantages of multipurpose river projects are-

Irrigation
Electricity production
Flood control
Fish breeding
Inland navigation
Provides employment

Disadvantages of multipurpose river projects are-

Damming of rivers affect their natural flow resulting in excessive sedimentation because of poor sedimentation flow at the bottom of the reservoir, resulting in rockier streambed and it also triggers floods.
Dams also results in fragmentation of rivers making it difficult for aquatic fauna to migrate, especially for spawning thus destroying the local aquatic flora and fauna.
Villages get submerged, people lose their livelihood with little or no hope of rehabilitation
It has great ecological consequences like salinization of the soil. At the same time, it has increased the social gap between the richer landowners and the landless poor.
The big dams have mostly been unsuccessful in controlling floods at the time of excessive rainfall.
It also resulted in earthquakes, caused waterborne diseases, pests and pollution resulting from excessive use of water.

Water Resources Class 10 Social Science NCERT Chapter 3 NCERT Solutions

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Attempt to Solve Yourself: Before looking at the solution, try to solve or answer the question independently. This practice will help you test your knowledge and problem-solving skills.
Match with Our Solution: After attempting the question, compare your result and approach with the provided NCERT solution. This step allows you to identify any mistakes or gaps in your understanding.
Refer to Solution Video (if needed): If you encounter difficulty or are unable to solve a question, you can refer to the NCERT solution video on Water Resources Class 10 Social Science NCERT Chapter 3 to get a step-by-step explanation of the correct approach. Pay attention to the reasoning and methodology used in the video.
Solve Again Yourself: Once you've understood the solution, attempt to solve the question again by yourself. Repetition and practice solidify your understanding of the concepts and improve retention.
Avoid Memorization: Focus on understanding the underlying principles and concepts behind each solution. Avoid simply memorizing the solutions, as this may hinder your ability to apply the knowledge in different contexts.
Attempt All Questions: Make an effort to attempt all the questions provided in the NCERT textbook. This comprehensive practice will help you cover the entire syllabus and reinforce your understanding across various topics. You may refer Class 10 Social Science Water Resources Online Test on LearnoHub.com.
Review and Revise: Regularly review the concepts and solutions you've learned. Revise your notes and practice regularly to retain the knowledge effectively. You may refer Water Resources Class 10 Social Science Notes.
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NCERT solutions of Water Resources Class 10 Social Science - all questions of all exercises are solved. Q. No. 1, 2, 3, and so on. Complete explanation and detailed solution makes them the best videos for Class 10 Social Science Water Resources NCERT solutions.