NCERT Exemplar for Class 10 Science Chapter 14 - Sources of Energy (Book Solutions)

NCERT Exemplar for Class 10 Science - Sources of Energy - Free PDF Download

Free PDF download of NCERT Exemplar for Class 10 Science Chapter 14 - Sources of Energy solved by expert Science teachers on Vedantu.com as per NCERT (CBSE) Book guidelines. All Chapter 14 - Sources of Energy exercise questions with solutions to help you to revise complete syllabus and score more marks in your examinations. The NCERT Solutions are always beneficial in your exam preparation and revision. Download NCERT Solutions for Class 10 Math from Vedantu, which are curated by master teachers. Science Students who are looking for Class 10 Science NCERT solutions will also find the solutions curated by our Master Teachers really Helpful.
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NCERT Exemplar for Class 10 Science Chapter-14 part-1

An overview of NCERT Exemplar for Class 10 Science - Sources of Energy

This component gives required insights into the topic of Sources of energy from the Class 10 NCERT textbook. Having extra knowledge than that is given in the textbook will improve conceptual clarity and also help you gain maximum marks. This exemplar component of NCERT is carefully designed by the experts after a proper survey into the required concepts, previous year questions and exam pattern. This Chapter helps the student to understand=d what are renewable and non - renewable sources of energy and how are they different, what are different sources of energy, advantages and disadvantages of different energy resources.

Conservation of energy is a trending topic. So studying this Chapter will help students understand the best practices for sustainable use of energy resources. Students will also get to know about hydroelectric power plants, biogas power plants, thermal power plants. Have a look at the PDF of the exemplar material of this Chapter below for a better understanding. Students are recommended not to skip any concepts and have a comprehensive understanding of the Chapter for better scores. They are recommended to refer to previous year questions and practice them thoroughly to improve scores in board exams.

FAQs (Frequently Asked Questions)

1. What are the different components under NCERT Exemplar for Class 10 Science - Sources of Energy ?

Following are the various topics discussed in Chapter 14 of Class 10 NCERT exemplar material. These can be downloaded free of cost from the official website of Vedantu and app.

  • What is a sustainable source of energy?

  • What are conventional sources of energy?: Fossil fuels, thermal power plants, hydroelectric power plants, latest trends in technology.

  • Alternative sources of technology: solar, tidal, nuclear and geothermal energy sources.

  • Sustainability of energy

  • Environmental consequences

2. What are the limitations of wind energy discussed in NCERT Exemplar for Class 10 Science - Sources of Energy?

Wind energy is an important type of renewable energy. Many onshore power plants are located in the USA, China and India. A wind park is also known as a wind power station is a place where multiple wind turbines are located together. The number of wind turbines varies from a few to hundreds depending on the area available in the wind farm. Wind parks could be onshore and offshore. Following are the limitations of wind energy:

  • As winds are seasonal in few places, there could not be any possibility for continuous production of energy

  • The area required to construct a wind farm is wide and hence, takes huge resources.

  • A minimum wind speed of 15 km/hr is needed to generate wind energy

  • Please refer to the NCERT material on our website for more information.

3. What happens when we use Fossil fuels in an unsustainable way according to the above-given material?

Fossil fuels are natural fuels that are formed after the dead animals and plants decompose. They are flammable buried geological deposits. They get weathered away with time and turn into natural resources. Following are the consequences of using fossil fuels in an unsustainable way:

  • When fossil fuels are burnt, they release many harmful gases like carbon dioxide, carbon monoxide etc., these gases in turn will increase pollution and also cause global warming which further increases the global average temperatures

  • Sulphur dioxide released when fossil fuels are burnt will cause acid rains and have harmful effects on biodiversity

  • Burning fossil fuels will release smog into the sky and reduce visibility especially in cities

  • It may cause various harmful diseases to humans, plants and animals

4. What is Biomass and what is the principle of working of Biogas plants discussed in NCERT Exemplar for Class 10 Science - Sources of Energy?

Sources that give us energy from organic material are Biomass. Cow dung, vegetable waste, crop residue etc., are some of the sources of biomass. The plant has a dome built with bricks. A slurry of water and cow dung or any other source is made in a tank and fed into the digester. The digester does not have any oxygen. Anaerobic organisms break the complex components of cow dung. It takes a few days to finish the entire process. Biogas formed is stored in the chamber above the digester.

5. What is the need for non - conventional sources of energy according to Chapter NCERT Exemplar for Class 10 Science - Sources of Energy ?

Energy generated from any source other than organic material is non - conventional source of energy. Examples of non - conventional sources of energy are wind, tidal, nuclear and geothermal energy sources. Tidal energy is harnessed by constructing dams at the opening of the sea. Wind energy is harnessed by wind turbines in a huge farm and nuclear reactors are used to harness nuclear energy. Following are the reasons to harness non - conventional sources of energy:

  • Conventional sources are limited and get exhausted soon. Unlike them, non - conventional sources replenish faster

  • They do not lead to environmental pollution

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