Energy can neither be created nor be destroyed but can only be transferred from one form to another. All of us know this law of conservation of energy, right. In our daily life, we see a lot of things that consume various types of fuel. The vehicles, the industries, even our daily household needs, require some form of energy to run. The various types of energy sources are fossil fuel, petroleum, and natural gas, coal, nuclear, and many others.
Now, if you look at the syllabus of the class 10 physics, the chapter sources of energy cover various sources of energy and its type. It also shares a view about the fact that the energy resources are getting less day by day, and that requires the utmost attention. Along with all this, the chapter unfolds various alternative sources of energy.
Here, in this article, we will take an in-depth look into the various sources of energy. We will also take a look at the types of resources that we can use for the future. Let’s discuss!!
What Are The Various Energy Sources In Class 10 Basic Physics?
Now, when we cycle our way to someplace, we use our physical energy. We use fuels like diesel and petrol to power up our vehicles. And we also use coal to run the machinery in large factories. Apart from these, there are also other fuels like LPG, CNG, and nuclear energy. All of these fuel types are a part of our daily lives. But, have you ever thought that what will be our state if they become extinct or unavailable completely.
It is not an immediate thing that will happen, but eventually, it will. The fuels obtained by fossil are limited and cannot sustain the human race forever. Hence, they need to be conserved. On the other hand, the population of the world is also growing at an alarming rate. Which also poses a threat to the natural energy resources of the world. So, taking this problem into account, there are many alternative sources that are discovered by mankind so far.
What Factors Make A Good Fuel?
Now, as we have a brief understanding of the various fuels, we should also know how to decide which one is better. And to do that, we need to take a closer look at some of the factors. By examining these factors, we can decide which fuel is better and cleaner.
The concept of thermal physics can be linked here. This actually means that how much heat does the fuel produces while burning. The fuel should have such properties that align with the conservation laws of energy. This means that a particular quantity of fuel should produce optimum heat for the process. The heat factor is one of the basic principles on which the choice of fuel depends.
This is also one of the basic things that a person needs to check before buying a fuel. The calorific value of the fuel is the amount of heat produced by burning a unit value of that fuel. The fuel that produces more heat in less quantity is preferred.
Ease Of Availability
The last but the most crucial one is the ease of availability of the fuel. If the fuel is not easily available, there is no benefit of having high calorific value and heat factor. Hence, good fuel should be easily available.
All these factors sum up the characteristics of a good source of energy. But there are some other questions also that one can consider while choosing a fuel for their daily use. You need to be sure that how economical the fuel is. Moreover, one should also consider asking about storing and transporting the fuel safely.
Let us move to the next section and discuss various other sources of energy.
Sources Of Generating Energy
Apart from just fossil fuels, there are many ways that can be used to generate electricity.
Thermal Power Plant
The use of coal and petroleum is almost equal to the use of other energy resources these days. But, the value of coal is more here as it is used to produce other forms of energy like electricity. Now, coal is tough to transfer across locations, which is the reason why most of the thermal power plants are established near a coal or oil field. This is extremely helpful as the conversion of coal to heat and heat to electricity becomes easier. Following this, unlike coal and oil, the transfer of electricity across distances is relatively easy.
Hydro Power Plant
The power of water flow is also of great use when it comes to producing electricity. How you ask? The flow of water has kinetic energy that can be harnessed to run a turbine and eventually to produce power. On the other hand, the potential energy of water is also useful for producing power. All this may seem like a great option, but it is not that easy. There is a high cost involved in projects like this.
The construction of a structure to get that flow for producing electricity is the first challenge. Alogn with this, the management of work and energy is the second. Now, building a dam may take years, but it is worth it as it will produce electricity for years to come. There are other disadvantages of making dams as the natural vegetation and land area gets compromised. Also, if it rains heavily, the chances of floods also increase.
Conventional Sources Of Energy
Apart from these natural sources, there are also some conventional sources of energy that need to be covered in your physics syllabus. Some of the conventional sources of energy are:
Now, we know that wood is an excellent example of fuel for producing energy. But, it burns with smoke and does not produce enough heat. This needs to be improved by making some technological advancements. One of the best ways to use wood is to burn it in a limited supply of oxygen, water, and volatile material. This will result in the production of Charcoal. And charcoal burns without producing much smoke and with high heat. Learn about the particle model of atom here.
We are all aware that India has a lot of livestock. This means that the availability of cow dung is also in bulk. In rural areas, the cow dung cakes are used for cooking and other energy purposes. Same as wood, the smoke produced by the cakes is high and needs improvement. If we arrive at the solution of this, the treatment of cow dung can be done in a biogas plant from where bio-gas can be collected and used for various energy needs. The benefit of using biogas is that it is 75 percent methane and burns clean. Not only this, but the treatment of biogas also yields various other products along with biofuels such as like manure and fertilizers.
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Have you seen a large area covered with nothing else but windmills? Most you have, right. This area is a type of electricity-producing area. The difference is that it comes from wind energy. A windmill rotates while the wind assists it in doing that. The motion of the windmill rotates the turbine of an electric generator attached to it, and the current is produced. The current produced from an electric charge in this process is of low magnitude. This is the primary reason behind the number of windmills in a field. All of them produce a current that sums up to a big value and can be used for further purposes. In order to hold such a high value of current, proper planning for electric potential devices and thermodynamics is required. It is a part fo general physics, although.
Non-conventional Sources Of Energy
There are some non-conventional sources of energy that are:
This is one of the cleanest energy that one can use. All you need to do is get the setup ready that includes solar cell panels and the electrical circuit that converts light energy to electric energy. One of the classic examples of this is a solar cooker.
The geothermal energy is the energy produced from the under the surface heat of the earth. The heat of those rocks is converted to steams. The steam is passed through the pipe to a turbine. This is used to generate electricity.
This is a part of nuclear physics, actually. The processes like nuclear fission and nuclear fusion also produce energy that can be used for generating electricity.
All this compiles the class 10 physics chapter sources of energy. To be the best at it, you need a professional tutor.
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