This chapter belongs to a previous NCERT/CBSE curriculum and is not part of the current 2026-27 chapter list. Removed in 2022-23.
Welcome to the NCERT Solutions for Class 10 Science - Chapter Sources of Energy. This page offers a step-by-step solution to the specific question from Exercise 0, Question 25:
Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one non-conventional source of energy.
. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one non-conventional source of energy.
Conventional sources are the non- renewable process of energy which can’t be used continuously or replenished by natural resources. Examples:- Coal, petroleum, firewood etc. these are the fossil fuels.
And, non- conventional sources are the renewable process of energy which is continuously replenished (refilled or freshen up again) by the natural resources. Examples:- solar energy, biomass or biogas, tidal energy, wave energy, ocean thermal energy, nuclear energy etc.
Methods to harness the non- conventional sources of energy are following:-
1. Tidal Energy: The level of water in the sea rises and falls by the gravitational pull of mainly the moon on spinning earth, and this is called high and the low tides. And the difference in between the high and low tides is known as tidal energy.
This energy is harnessed by constructing a dam across the narrow opening to sea and a turbine is fixed which converts tidal energy to electricity.
2. Wave Energy: Kinetic energy possessed by large waves near the sea and used to generate electricity. And, these waves are generated by the strong winds. Wave energy can be trapped only where waves are very strong. Various devices have been used to trap wave energy for turning the turbine and production of electricity.
3. Ocean Thermal Energy: Water at the surface of the sea is heated by sunlight but the deeper water is cold in sea. This energy is obtained from the temperature difference in ocean thermal energy conversion plants. The warm surface of water is used to boil the volatile liquid and then these vapours of liquid like ammonia. These vapours are then used to run the turbine of the generator. And, the cold water from the deeper section of the sea or ocean pumped and condenses vapours again into liquid.
4. Nuclear Energy: It is harnessed by the fission process in nuclear power plants to convert the energy into the electricity with the help of nuclear reactors.
5. Solar Energy: solar energy is harnessed by using solar cells, solar cookers, solar panels etc. which is charged by the direct sunlight.
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 25: Make a list of conventional and non-conventional sources of energy. Give a brief description of harn....
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