what are the advantages and disadvantages of conventional sources of energy? class 8th plz full answer
Answers
Answer:
The conventional sources of energy are generally non-renewable sources of energy, which are being used since a long time. These sources of energy are being used extensively in such a way that their known reserves have been depleted to a great extent.
At the same time it is becoming increasingly difficult to discover and exploit their new deposits. It is envisaged at known deposits of petroleum in our country will get exhausted by the few decades and coal reserves are expected to last for another hundred years. The coal, petroleum, natural gas and electricity are conventional sources of energy.
Advantages
The main advantages of conventional energy resources are that they are abundant and affordable. For example, oil and diesel are still good choices for powering vehicles. Non-renewable energy is cost effective and easier to product and use. According to National Geographic, there are reservoirs of non-renewable energy sources throughout the world.
Disadvantages
The disadvantages to conventional energy resources indicate that once sources of non-renewable energies are gone they can't be replaced or revitalized. The mining of non-renewable energy and the by-products they leave behind causes damage to the environment. There is little doubt that fossil fuels contribute to global warming. When fossil fuels are burned, nitrous oxides causes photochemical pollution, sulphur dioxide creates acid rain, and greenhouse gases are emitted.
A major disadvantage of non-renewable energy is the challenge of breaking humans of their habit of leaning on it. The Union of Concerned Scientists reports it's an uphill battle to sway consumers that the so-called "public goods" of renewable energy, such as reducing pollution for everyone, may not be enough to convince them to pay more for cleaner energy.
Explanation:
Answer:
Energy resources can be classified into conventional and non-conventional sources. Conventional sources are those energy sources which have been in usage for a long time. Firewood and fossil fuels are the two main sources. The major advantages of using conventional energy sources are:
• Accessible: The deposit of minerals is widely accessible and completely identified. Thus the identification, extraction and usage can be widely done.
• Wider scope: People are much accustomed to the exploitation and usage of conventional sources, especially firewood. This is the basis of living, especially in rural areas.
• Basis of many industries: fossil fuels are the basis of the functioning of many petrochemicals and other related industries.
• Energy generation: The generation of electricity still uses coal as the major power source. It can be easily converted to electricity.
But the consequent exploitation of these conventional sources has many disadvantages. Some of them are:
• Pollution: The major disadvantage of these conventional sources is that they cause high pollution. The burning of firewood and fossil fuels result in air pollution. This can be avoided by using these non-conventional sources.
• Exhaustible: The major problem while using conventional sources especially fossil fuels is that they are exhaustible sources. It takes millions of years for them to be renewed and replenished. But non-conventional sources are renewable sources that do not get exhausted.
• Risky: Non-conventional energy extraction is safer. Many accidents occur while extracting energy from mines.
• High cost: The extraction of these energy sources are very costly both economically and environmentally. The cost of energy production and extraction is much lesser for non-conventional sources if the initial cost of establishment is borne.