NCERT Exemplar Class 10 Science Chapter 14 Solutions: Sources of Energy
NCERT Exemplar Class 10 Science Solutions for Chapter 14 ‘Sources of Energy’ explain everything related to the chapter of NCERT Exemplar Class 10 Science such as conventional and non-conventional sources of energy. This includes the study of fossil fuels, thermal power plants, biomass, wind energy, solar energy, tidal energy, solar cooker and environmental consequences of using conventional and non-conventional sources of energy.
NCERT Exemplar Class 10 Science Chapter 14 contains problems like multiple choice questions, short answer questions, and long answer questions. These types of questions will offer you in-depth knowledge of concepts. This exercise has 29 questions in total that cover almost every topic and hence ensure a complete understanding of the concepts of the chapter.
The team of subject matter experts at Instasolv has years of experience, and they aim to provide the best learning experience to you. Instasolv’s NCERT Exemplar problems and solutions are in simple language, which makes it easier for you to understand. Our experts have tried to cover all the necessary information and explain every problem step by step.
Important Topics for NCERT Exemplar Class 10 Science Solutions Chapter 14: Sources of Energy
We have often heard in our daily lives that we use energy from various sources for doing work, but what exactly are these sources? The chapter aims at explaining all these sources that are present everywhere. Some of the significant concepts in the chapter are:
Conventional Sources of Energy
As the word suggests, these are the traditional Sources of Energy. Some of these sources are:
- Fossil fuels: Fossil fuel is a fuel made by natural processes, like the anaerobic decomposition of buried dead organisms. Hydrocarbons, primarily coal, fuel oil, or natural gas, come under this category.
- Thermal power plant: In this method, large amounts of fossil fuels are burnt in thermal power stations, which heats water to produce steam, and it further runs the turbine to generate electricity.
- Hydropower plants: In this method, a hydropower system uses a dam to store the river water at a height. Water is then released from the height, which flows through a turbine. The turbine starts spinning and then, in turn, activates a generator to produce electrical energy from kinetic energy.
Non-Conventional Sources of Energy
- Biomass: Biomass is an animal or plant material that is used for producing energy. The energy can be generated by using organic matter like crops, wood, waste from food crops, forest residues, etc. In this method, a direct combustion system burns the biomass material in a furnace to generate hot gas, which is converted into electric energy.
- Wind Energy: It is a process that uses wind to generate electricity. Here, the rotatory motion of the windmill turns the turbine of the electric generator. It is an environment-friendly and efficient source of renewable energy.
- Solar energy: Solar energy uses the energy from the Sun to convert it into electricity. In this method, Solar panels convert the Sun’s rays into electricity by using the photons of light from the Sun and thus excites electrons in silicon cells.
- Tidal energy: It is a form of hydropower that converts the tidal energy obtained from tides into electricity. Wave energy also works on this principle.
- Ocean thermal energy: Ocean Thermal Energy produces electricity by using the temperature difference between deep cold ocean water and warm tropical surface waters.
- Nuclear energy: Nuclear energy uses nuclear reactions to generate heat, which is then used in steam turbines to produce electricity.
Exercise Discussion of NCERT Exemplar Class 10 Science Solutions Chapter 14: Sources of Energy
- The exercise of this chapter has 29 questions in total. There are 15 multiple choice questions, 7 short answer questions, and 6 long answer questions. All these questions assess your overall understanding of the chapter.
- In multiple-choice questions, you have to choose the correct answer from the given options. The questions are based on different sources of energy.
- In short answer questions, you need to provide a general justified answer. In this section, you are asked about the definitions of some sources of energy and their principles.
- In the long answer questions, you have to give a detailed answer along with analysis. You also have to draw diagrams if required. It includes topics like solar energy, biomass, and environmental consequences of fossil fuels etc.
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The NCERT Exemplar Class 10 Science Solutions for Chapter 14 by Instasolv are tailored appropriately and easily that ensures a complete understanding of all the topics of the chapter.