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30 tháng 3 2016
Advantages of Solar Power?
  • Solar energy is a clean and renewable energy source.
  • Once a solar panel is installed, solar energy can be produced free of charge.
  • Solar energy will last forever whereas it is estimated that the world’s oil reserves will last for 30 to 40 years.
  • Solar energy causes no pollution.
  • Solar cells make absolutely no noise at all. On the other hand, the giant machines utilized for pumping oil are extremely noisy and therefore very impractical.
  • Very little maintenance is needed to keep solar cells running. There are no moving parts in a solar cell which makes it impossible to really damage them.
  • In the long term, there can be a high return on investment due to the amount of free energy a solar panel can produce, it is estimated that the average household will see 50% of their energy coming in from solar panels.

 

Disadvantages of Solar Power?
  • Solar panels can be expensive to install resulting in a time-lag of many years for savings on energy bills to match initial investments.
  • Electricity generation depends entirely on a countries exposure to sunlight; this could be limited by a countries climate.
  • Solar power stations do not match the power output of similar sized conventional power stations; they can also be very expensive to build.
  • Solar power is used to charge batteries so that solar powered devices can be used at night. The batteries can often be large and heavy, taking up space and needing to be replaced from time to time.

 

9 tháng 5 2022

tk

Nowadays, it has become necessary to use green technology with green renewable energy sources. Among all green energy sources, solar energy is the most important renewable energy source, which has both advantages and disadvantages.
First of all, solar energy comes directly from the sun and this abundant renewable energy source is sustainable. In general, this type of energy is environmentally friendly and does not cause pollution. Another advantage is that solar energy is available everywhere in the world, not only in hot and sunny countries near the Equator. Furthermore, it is very quiet because solar energy devices do not have any moving parts.

However, solar energy is not cheap. Solar panels are expensive to produce as they use rare and special materials. In addition, the technology used to store solar energy is costly. A further disadvantage is that solar energy is not always available since access to sunlight is limited at certain times. Furthermore, although it is greener than fossil fuels, the production of solar panels may emit some greenhouse gases.

In short, there is no energy source that is completely risk-free. However, the pros of solar energy as a renewable energy source outweigh the cons. I hope that further development of green technology will soon eliminate the disadvantages.

12 tháng 4 2017

năng lượng gì bạn ? bạn có thể nói rõ đề hơn không

12 tháng 4 2017

Solar energy is a renewable source of energy because it comes from the sun. It's clean and safe but it's unpopolar now.

8 tháng 4 2022

Do not pollute the environment, is a renewable energy source

Source energy cannot be reused, polluting the environment

4 tháng 7 2018

rewable:wind,solar enery,hydro,nuclear,biogas...

non rewable:coal,oil,natural gas...i think people will use it more in the future

In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1)...................................., and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2)...................................... new sources of energy to keep modern society running. Whether future populations will continue to...
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In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1)...................................., and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2)...................................... new sources of energy to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend (3)............................... the success of this search. Coal, oil and natural gas are now being used widely. (4).............................., these supplies are limited, and they are a major source of pollution. Therefore, the existing alternative energy sources must be improved or futher explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5)...................................... types of fuels. Each of these, however, has advantages and disadvantages.

1
12 tháng 4 2017

In the modern world, people depend on energy to power their everyday lives. A wide range of power-run devices and modern conveniences (1) are taken for granted, and although it may seem that we will not be in danger of living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are constantly (2) searching for new sources of energy to keep modern society running. Whether future populations will continue to enjoy the benefits of abundant energy will depend (3) on the success of this search. Coal, oil and natural gas are now being used widely. (4) However, not only are supplies of , these supplies are limited, and they are a major source of pollution. Therefore, the existing alternative energy sources must be improved or futher explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5) nonpolluting types of fuels types of fuels. Each of these, however, has advantages and disadvantages.

8 tháng 1

My house primarily relies on electricity and gas for energy. Electricity powers most appliances and lighting, offering convenience but contributing to high consumption. Gas fuels the heating system, providing warmth efficiently but releasing emissions. To save energy, I've adopted simple habits: switching to LED bulbs, unplugging devices not in use, and using energy-efficient appliances. I've also improved insulation and sealed drafts to minimize heat loss. Moreover, I'm conscious of water usage, opting for efficient fixtures and practicing conservation. These steps not only save energy but also reduce environmental impact, aligning with my commitment to sustainability.

22 tháng 10 2019

Đáp án: the Sun

14 tháng 9 2019

Đáp án: roofs