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@Mến Vũ,@phương linh,@Vũ Thị Phương,@Linh Diệu,@hoang khanh linh
rewable:wind,solar enery,hydro,nuclear,biogas...
non rewable:coal,oil,natural gas...i think people will use it more in the future
1.How many types of energy sources are mentioned in the text? What are they?
Two. They are renewable and non-renewable.
2.What are the disadvantages of hydro and nuclear power?
Hydro power is limited because dams cannot be built in certain areas. Nuclear power is dangerous.
3.Why do you think the wind and the sun are called alternative sources of energy?
Because they are natural sources of power and we use them instead of non-renewable sources to get the electricity we need.
4.What types of energy does Viet Nam use most?
We use non-renewable sources of energy the most but we are increasingly using hydro power.
5.What does the professor think Viet Nam will use more in the future?
He thinks Viet Nam will use the wind and the sun as alternative sources of energy in the future
Solar energy captured by solar panels is a limitless form of energy, as the earth is bombarded with extreme amounts of solar energy every day, according to the National Renewable Energy Laboratory. It's also clean, producing no carbon dioxide, and is very low-maintenance, since solar panels have no moving parts.
Unfortunately, the National Renewable Energy Laboratory says its high installation cost makes it up to four times more expensive than the cost of electricity from a standard utility company. For optimal operation and maximum energy production, it requires year-round sunny weather and is very expensive if repair is necessary, according to the U.S. Environmental Protection Agency
dich:
Năng lượng mặt trời thu được bởi các tấm pin mặt trời là một dạng năng lượng vô hạn, vì trái đất bị bắn phá với lượng năng lượng mặt trời cực lớn mỗi ngày, theo Phòng thí nghiệm năng lượng tái tạo quốc gia. Nó cũng sạch sẽ, không tạo ra khí cacbonic và bảo dưỡng rất thấp, vì các tấm pin mặt trời không có bộ phận chuyển động. Thật không may, Phòng thí nghiệm năng lượng tái tạo quốc gia cho biết chi phí lắp đặt cao của nó làm cho nó đắt hơn gấp bốn lần so với chi phí điện từ một công ty tiện ích tiêu chuẩn. Để hoạt động tối ưu và sản xuất năng lượng tối đa, nó đòi hỏi thời tiết nắng quanh năm và rất tốn kém nếu sửa chữa là cần thiết, theo Cơ quan Bảo vệ Môi trường Hoa Kỳ
CHÚC BẠN HỌC TỐT NHA^.^
Causes environmental pollution, is a non-renewable energy source, if not used safely, it will be dangerous to life.
Radiation
The accidental release of harmful radiation is one of the greatest limitations of nuclear energy. The process of fission releases radiation, but they are controlled in a nuclear reactor. If safety measures are not ensured, the radiations that may be exposed to the environment will lead to serious effects on the ecosystem and people.
Can't reproduce
Although they generate large amounts of energy, nuclear reactors are still dependent on uranium. This is a fuel that can be depleted. Its depletion can cause a serious problem. The reactors will have to be decommissioned, they will still occupy a large area of land and pollute the environment.
Development of nuclear weapons
This energy can be used for the production and proliferation of nuclear weapons. Nuclear weapons use fission, fusion, or a combination of both reactions for destructive purposes. It is a great threat to the world as they can cause a large scale destruction. Their effects can affect generations (for example, the atomic bombings of Hiroshima and Nagasaki, Japan).
Huge construction costs
While a large amount of energy can be produced from a nuclear power plant, it requires large investment costs. It takes about 10-15 years to build a nuclear power plant. Building a nuclear power plant may not be feasible.
Nuclear waste
The waste products produced after fission contain unstable and highly radioactive elements. It is very dangerous to the environment as well as to human health and will last for a long time. It needs to be handled with care and isolated from the environment. The radioactivity of these elements will decrease for a while, then decay. Therefore, one must be stored and handled with care. Storing radioactive elements for a long time is very difficult.
Nuclear power plant accident
So far, there have been two catastrophic nuclear power plant accidents: the Chernobyl disaster that occurred at the Chernobyl nuclear power plant (1986) in Ukraine, and the Fukushima Daiichi nuclear disaster (2011) in Japan. Copy. After the incidents, a large amount of radiation was released into the environment, resulting in damage to people, nature and land. One cannot deny the possibility of a repeat of these disasters in the future.
Transportation of fuel and waste
The transportation of uranium fuel and radioactive waste is very difficult. Uranium emits some radiation, so it needs to be handled with care. The waste from nuclear production is even more dangerous and needs better protection. All means of transport them ensure international safety standards. Although no accidents or spills have been reported, transportation remains challenging.
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.