NCERT Solutions for Class 10 Science Chapter 14- Sources of Energy

NCERT Solutions for Class 10 Science is one of the best study resources created by experienced individuals. The NCERT solutions for Class 10 Science Chapter 14- Sources of Energy are prepared after a lot of research in order to provide the best content possible.

The questions are provided along with the answers for a better understanding of the concepts. The MCQs and long and short questions should be dealt with thoroughly. The questions from the textbooks are also answered for your reference.

NCERT Solutions are the best guide for the students appearing for the board examinations. This helps the students to analyze their shortcomings so that they overcome them before the examination.

NCERT Solutions for Class 10 is a detailed study material beneficial for the students appearing for the board examinations. A thorough practice of all the questions will surely help the students excel in the examinations.

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NCERT Solutions Class 10 Science Chapter 14 Sources of Energy part 1
NCERT Solutions Class 10 Science Chapter 14 Sources of Energy part 2
NCERT Solutions Class 10 Science Chapter 14 Sources of Energy part 3
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NCERT Solutions Class 10 Science Chapter 14 Sources of Energy part 6

NCERT Solutions for Class 10 Science Chapter 14- Sources of Energy

This chapter holds a weightage of 1 mark in the examination. A single question was asked from this chapter in the previous year examination.

This chapter includes the following topics:

14.1 What Is A Good Source Of Energy?

14.2 Conventional Sources Of Energy

14.3. Alternative Or Non-Conventional Sources Of Energy

14.4. Environmental Consequences

14.5 How Long Will An Energy Source Last Us?

List of Exercises

Exercise Solutions 10 Questions (3 MCQs, 3 long, 4 short)

What is a Good Source of Energy?- 4 Questions

Non-Conventional Sources of Energy- 3 Questions

Conventional Sources of Energy- 2 Questions

Environmental Consequences- 1 Question

NCERT Solutions for Class 10 Science Chapter 14- Sources of Energy

Energy is derived from several sources. These sources are classified as:

  • Renewable Sources
  • Non-renewable Sources

Renewable energy is the one that is derived from natural sources such as sun, wind, water, etc and can be replenished. The energy derived from these natural sources can be converted into various forms of energy such as solar energy which is widely used in solar cookers, solar panels to generate electricity, solar batteries etc., wind energy used in windmills,

The non-renewable energy is the obtained from natural resources that once exhausted cannot be replenished. Coal, oil and natural gas are the sources of non-renewable energy. It takes several years for the formation of these resources. These are widely used in today’s scenario. However, they are less eco-friendly when compared to renewable resources as they produce a lot of environmental pollution when burnt.

These sources of energy have several advantages and disadvantages. Therefore, they should be used wisely. The non-renewable sources are on the verge of getting exhausted. Alternative sources of energy are being searched which can be used in an environment-friendly manner without being depleted.

Key Features of NCERT Solutions for Class 10 Science Chapter 14- Sources of Energy

  • NCERT Solutions are the best way to evaluate yourself.
  • It creates a better understanding of the concepts.
  • Created by experts after a lot of research, NCERT Solutions provide accurate information.
  • The sample papers and MCQs are provided for better practice with the questions from previous year question papers.
  • The questions along with the answers are helpful to clarify the doubts.

Frequently Asked Questions on Sources of Energy

What is a good fuel ?

A fuel is said to be good when it is easily available and when it produces a large amount of heat energy when burnt.

Why are we looking at alternate sources of energy ?

The reason why we are looking at alternate sources of energy is because the fossil fuels are non-renewable source of energy i.e. they are not available in large quantities and it cannot be replenished. Fossil fuels will get exhausted if their consumption is not controlled. Therefore, it is better to switch to alternate source of energy.

What kind of mirror – concave, convex or plain would be best suited for use in a solar cooker ?

For a solar cooker the heat source is sunlight for heating and cooking. The reason why a mirror is used is to reflect and focus the sunlight at one point. So a concave mirror can be used in a solar cooker, as it focuses all the sunlight at one point resulting in increase in temperature, thereby heating and cooking the food.

What is geothermal energy ?

Geothermal energy cab be defined as the energy that is obtained from the earth. The energy can be obtained from the hot spots that are formed when the molten rocks at the core of the earth are pushed to the earth’s crust. Hot springs are used for the production of electricity in the geothermal power plants.

What are the advantages of nuclear energy ?

Following are the advantages of nuclear energy:

  • Amount of energy produced per unit mass is large
  • As it does not produce any pollutants, it is clean
  • Fission of 1 atom of uranium produces 10 million times the energy that is obtained by burning 1 atom of carbon

Can any source of energy be pollution-free ?

No source of energy can be pollution-free. But solar cells are considered to be pollution-free. But their manufacturing may cause environmental damage. In case of nuclear energy, the waste produced after fusion is zero. But the wastes that are produced during fission are hazardous. Hence, no source of energy is pollution-free.

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