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NT
0
LH
2 tháng 5 2018
Vào đây hỏi nhé bạn:
@Mến Vũ,@phương linh,@Vũ Thị Phương,@Linh Diệu,@hoang khanh linh
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
C
8 tháng 4 2022
Causes environmental pollution, is a non-renewable energy source, if not used safely, it will be dangerous to life.
PQ
Phan Quỳnh Hoa
VIP
8 tháng 4 2022
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.
BT
1
KP
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.
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.
LT
11 tháng 10 2020
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
