K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Các câu hỏi dưới đây có thể giống với câu hỏi trên
CD
26 tháng 3 2018
1. How many types of energy sources 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 can not 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 energy and we use them instead of non-renewable sources.
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 Vietnam will use the wind and the sun as alternative sources of energy in the future.
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
TA
0
LH
2 tháng 5 2018
Vào đây hỏi nhé bạn:
@Mến Vũ,@phương linh,@Vũ Thị Phương,@Linh Diệu,@hoang khanh linh
VN
23 tháng 6 2020
Đọc và trả lời câu hỏi
Fossil fuels are non -renewable energy soircecs.They include oil,coal,and natutal gas.They can be used to create energy, generate electricity,or drive big machinery.Unfortunately,they are harmful to the environment. Viet Nam still relies mostly on non-renewable energy sources, however,hydro power is increasingly used here too.
Hydro and nuclear power can generate a great deal of energy. They are renewable and plentiful.However,hydro power is limited because dams cannot be built in certain areas.Nuclear power can provide enough electricity for the world´s needs, but it is dangerous.
The sun and the wind are other alternative sources of energy.
1)What are non-renewable energy sources?
Fossil fuels are non -renewable energy soircecs.
2)What can non-renewable energy soirces be used?
They can be used to create energy, generate electricity,or drive big machinery.
3)Why is hydro power limited?
Because dams cannot be built in certain areas
4)Can nuclear power provide enought electricity for the world´s needs?
Yes, it can
#Yumi
mình làm bài này rồi chỉ kiểm tra cho chắc ăn
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.
24 tháng 3 2020
1. Can natural resources be used up someday?
=> Yes, they can.
2. What should we do if we don’t want the natural resources to run out of?
=> We should use them economically and try to find out alternative sources of power
3. Why don’t people prefer using nuclear power?
=> Because it is very dangerous.
4. What does the radioactivity cause for young people?
=> It causes cancer and may badly affect the future generations.
5. What will you do to protect your environment?
=> I will use natural resources as economically as possible.
24 tháng 3 2020
1. Natural resources can be used up some day
2. Try to find out alternative sources of power, use the natural resources as economically as possible, start conserving coal, oil and gas is what we should do if we don't want the natural resources to tun out of
3. Because it is very dangerous
4. Radioactivity cause cancer and may badly affect young people
5. I'll reuse old things, conserve water, plant trees and bike more to protect my environment
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.