NCERT Class 10 Science Chapter 14 Notes Sources Of Energy - Download PDF

Prepare to ace your CBSE Class 10 Science exam with our expertly crafted revision Sources of Energy class 10 notes. These notes, created by experienced science teachers and aligned with the most recent editions of CBSE (NCERT) books, are the ideal study companion.

Our short class 10 physics chapter 14 notes are designed to facilitate quick revision and cover all of the chapter's essential concepts. Furthermore, with an emphasis on clarity and effectiveness, these CBSE class 10 physics ch 14 notes are appropriate for students of all levels of proficiency.

Download the free Physics Class 10 Chapter 14 notes pdf today and take your preparation to the next level. Don't forget to look at our NCERT solutions for class 10 for more comprehensive study materials. With our ch 14 physics class 10 notes by your side, getting higher grades in your exams has never been easier!

Additionally, students can refer to

• NCERT Notes Class 10 Science
• NCERT Solutions for Class 10 Science chapter 14 Source of Energy.
• NCERT Exemplar Class 10 Science Chapter 14 Solutions Source of Energy

NCERT Class 10 Science Chapter 14 Notes

Conventional Source of Energy:- The source of energy that can only be used only once is called a conventional source of energy. They are also known as non-renewable sources of energy. For example, petrol, coal, natural gas, etc.

Non-Conventional Sources of Energy:- Renewable sources of energy are known as non-conventional sources of energy.

The Fossil:- Fossil fuels were formed millions of years ago. They are a limited resource. We must conserve fossil fuels because they are not renewable. We would run out of energy if we continued to consume these resources at such a rapid rate. This prompted the investigation of alternative energy sources. The majority of our energy needs are still met by fossil fuels. There are other disadvantages, too, to burning fossil fuels. It causes pollution. Such as burning coal and petroleum products causes air pollution.

Thermal Power Plant:- During this process, fuel is burned to produce heat energy, and this heat energy is then converted to electrical energy. In power stations, fossil fuels are used to heat water to produce steam that runs the turbine to generate electricity.

Hydropower Plants:- Hydroelectric power plants utilize the potential energy of falling water to generate electricity. In order to produce electricity from hydropower plants, dams are constructed on the river to stop the flow of water so water can collect in large reservoirs. The water from the dam's high level is routed through pipes to the turbine at the dam's base. Because the reservoir would be refilled every time it rained. The main advantage of hydropower plants is that water is available everywhere free of cost. It is pollution-free, and it is a cheap source of energy. Construction of dams is not possible in all the river sites. Large portions of agricultural land and human settlements will be sacrificed as they become submerged; these are some of the plant's drawbacks.

Biomass:- Cow dung cakes are used as fuel. These fuels are products of plants and animals so, these fuels are said to be bio-mass. In the absence of oxygen, cow dung, various plant materials such as crop residue, vegetable waste, and sewage decompose to produce biogas. Mainly cow dung is used which is known as gobar-gas. The biogas plant is fairly basic and can be easily constructed in rural locations. A small plant that uses the dung of 3 to 4 cattle heads can produce Biogas for 6 hours per day. Biogas is a clean fuel that emits no smoke and produces no ash. Firewood is saved and deforestation is reduced by using Bio-gas.

Wind Energy:-When large masses of air move from one place to another, it is referred to as wind. Wind energy is created as a result of this process because kinetic energy is associated with it. The electricity is also produced by wind. The rotation of the turbine of an electric generator generates electricity through the rotatory motion of the windmill. A wind energy farm is a collection of windmills spread across a large area. The energy output of each windmill in a farm is combined to generate commercial-scale electricity. Wind energy has the following advantages: It powers windmills, water lifting pumps, and flour mills, it is used to fly engine-less planes or gliders through the air, and it is eco-friendly. Some of the disadvantages are that the wind's speed is not always consistent, it needs a very large area of land, and the output may be less.

Solar Energy:- Solar energy is generated by harnessing radiant light and heat from the sun through a range of technologies, such as solar power for generating electricity and solar thermal energy for heating water. A black surface absorbs more heat. Solar cookers and water heaters use this property in their work. Solar energy converts the radiation into electricity through photovoltaic cells. When a large number of solar cells are combined in an arrangement called a solar cell panel. But photovoltaic cells are made up of silicon, which is abundant in nature but the availability of special-grade silicon for making solar cells is limited. The main advantages of solar energy are that it is eco-friendly, and it is easily used in rural areas, and most important that it retains all the nutrients in food due to slow cooking.

Energy From The Sea

Tidal energy:- The rise and fall of ocean water due to the gravitational attraction of the moon known as high tide and low tide respectively. A dam is built across a narrow opening to the sea to harness tidal energy a turbine is fixed at the opening of the dam which converts tidal energy to electricity.

Wave energy:- Sea wave energy is the energy obtained from high-speed waves. The high-speed waves have a lot of kinetic energy associated with them, and that energy can be turned into electrical energy by dynamos.

Ocean thermal energy:-The upper layer of water is heated by the sun but the lower layer of water in the sea relative to it remains cold. This temperature difference is exploited to obtain energy in ocean-thermal energy conversion plants.

Geothermal Energy:- Molten rocks form in the deeper hot regions of the earth's crust and are pushed upward and trapped in certain regions known as hot spots. Steam is produced when underground water comes into contact with these hot spots. Hot water from the location occasionally finds its way to outlets in that region. Hot springs are such outlets. The trapped steam in the rocks is routed through a pipe to a turbine, where it is used to generate electricity. It is a renewable source of energy. The cost of production would be low, but there would be very few commercial sites where such energy could be used.

Nuclear Energy:- Nuclear energy is a reaction in which the nucleus of an atom undergoes a transition to generate a new atom and releases a massive quantity of energy. Nuclear energy can be obtained in two ways:

(a) through nuclear fission and (b) through nuclear fusion.
Nuclear energy is the energy released when changes occur in the nucleus of a substance's atom.
It is used to generate heat and as fuel for marine vessels. The main advantage of nuclear energy is that it needs a very small amount of fuel but produces a very large amount of energy. It is a very expensive plant and also pollutes the environment.

Significance of NCERT Class 10 Science Chapter 14 Notes

NCERT Class 10 Science Chapter 14 Notes are invaluable resources for students preparing for the CBSE board exams. Here are some key reasons why these notes are significant:

1. Comprehensive Coverage: The Sources of Energy class 10 notes go over all of the important topics and concepts in Chapter 14, ensuring that you understand everything.
2. Simplified Explanation: The class 10 physics chapter 14 notes offer simplified explanations of complex concepts, allowing students to grasp the main points and fundamental principles.
3. Alignment with CBSE Syllabus: These Sources of Energy notes class 10 are aligned with the CBSE Science Syllabus for Class 10, ensuring that students focus on the board-specified topics for exams.
4. Convenient Review: Students can use these CBSE class 10 physics ch 14 notes to quickly review the chapter, reinforcing their learning and preparing effectively for exams.
5. Offline Preparation: Because these ch 14 physics class 10 notes are in PDF format, students can download and access them offline, allowing for convenient preparation at any time and from any location.

In essence, NCERT physics class 10 chapter 14 notes pdf are essential study materials that help students thoroughly review the chapter, grasp key points, and effectively prepare for their CBSE board exams.

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