Advantages of Nuclear Energy
The Earth has limited supplies of coal and oil. Nuclear power plants could still produce electricity after coal and oil become scarce.
Nuclear power plants need less fuel than ones which burn fossil fuels. One ton of uranium produces more energy than is produced by several million tons of coal or several million barrels of oil.
Coal and oil burning plants pollute the air. Well-operated nuclear power plants do not release contaminants into the environment.
Disadvantages of Nuclear Energy
The nations of the world now have more than enough nuclear bombs to kill every person on Earth. The two most powerful nations -- Russia and the United States -- have about 50,000 nuclear weapons between them. What if there were to be a nuclear war? What if terrorists got their hands on nuclear weapons? Or what if nuclear weapons were launched by accident?
Nuclear explosions produce radiation. The nuclear radiation harms the cells of the body which can make people sick or even kill them. Illness can strike people years after their exposure to nuclear radiation.
One possible type of reactor disaster is known as a meltdown. In such an accident, the fission reaction goes out of control, leading to a nuclear explosion and the emission of great amounts of radiation.
In 1979, the cooling system failed at the Three Mile Island nuclear reactor near Harrisburg, Pennsylvania. Radiation leaked, forcing tens of thousands of people to flee. The problem was solved minutes before a total meltdown would have occurred. Fortunately, there were no deaths.
In 1986, a much worse disaster struck Russia's Chernobyl nuclear power plant. In this incident, a large amount of radiation escaped from the reactor. Hundreds of thousands of people were exposed to the radiation. Several dozen died within a few days. In the years to come, thousands more may die of cancers induced by the radiation.
Nuclear reactors also have waste disposal problems. Reactors produce nuclear waste products which emit dangerous radiation. Because they could kill people who touch them, they cannot be thrown away like ordinary garbage. Currently, many nuclear wastes are stored in special cooling pools at the nuclear reactors.
The United States plans to move its nuclear waste to a remote underground dump by the year 2010.
In 1957, at a dump site in Russia's Ural Mountains, several hundred miles from Moscow, buried nuclear wastes mysteriously exploded, killing dozens of people.
Nuclear reactors only last for about forty to fifty years.
I don't think you should write an essay about a scientific topic based on info given here. Do a little bit of research. Do kids these days know how to do "research"?
Try "How Things Work," or Google "nuclear energy" and find a decent, professional website. Not wikipedia.
Nuclear energy is literally energy from the nucleus of atoms. This energy is released in nuclear reactions: fission, fusion or radioactive decay. The energy released is much more concentrated than chemical reactions which involve only the electrons of the atoms, not the nucleus.
Nuclear energy is a way of creating heat through the fission process of atoms. All power plants convert heat into electricity using steam.
i want to know nuclear energy. Because i should write an essay about nuclear energy and i don't have some idea and i don't have enough information about it. Please help me if you know nuclear energy?
