Nuclear

Mike 10 (4th) Thursday 18/03/2010 Now a day, there are lots of kinds of energy, such as: wind energy, heat energy, geothermal energy, oil of fossil and finally nuclear energy. Nuclear energy is a clear energy and it could be created by nuclear reaction or atomic reaction. Technology is get better day by day. Before that, people use natural nuclear energy which is not make by man like: heat energy come from sun and stars. But now, people can create nuclear energy by nuclear reactor or nuclear power plant. Nuclear energy came to make friend with human at December 1942.

On the world, each country uses different kind of energy to produce electricity for their cities. Lots of cities use man made nuclear energy. Man made nuclear energy can be made by release large energy or combine small energy. Nuclear energy provides more than 16% of world energy. That means nuclear energy is very useful and popular all over the world.

Nuclear energy is more popular because it can serve electricity for world even all of the coal or oil on the earth ran out. A gram of Uranium can produce more than what 2000 kilograms oil or 3 tons of coal. When people made energy from coal, it will make air polluted and it makes bad effect to the earth. But with nuclear energy, it doesn’t make any bad effect to the environment Nuclear energy also have disadvantage. By Uranium, people could make bomb and kill huge number of population. Just USA and Russia, there are more than 50,000 nuclear weapons. Now other countries such as: Korea, India, Iran. The radiation from nuclear bomb could change cells in human body, make them sick, sometimes kill them. Meltdown, a sickness which the babies born with incomplete body or incomplete brain are also a produce by radiation. In Vietnam, there are lots of babies that effected by Meltdown.

Future of nuclear energy depends on scientist and countries governors. It could be good if human use nuclear energy to serve human life with right way. If not it could be a world with nuclear bomb and sickness, cancer, meltdown caused by nuclear radiation.


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Vincent Class: 3 Teacher: Bly Date: 19/03/10 Nuclear uses and its effect Uranium is not a rare element on earth. It could be found on the earth’s surface especially in United States, South Africa, Canada, and Australia. Uranium is really easy to make a big explosion or it could create a lot of energy by release heat; it’s nuclear power. Since Uranium creates nuclear power, it was encourage using by many advance country. Nuclear power created by fusion – combining two light nuclei to form a heavy nucleus – or fission – splitting the nucleus into two light nuclei. Both reactions release a huge amount of heat. Fission is used in nuclear plant to create power. Fission caused a chain reaction between the atoms in uranium. This means that it continuous create neutron the make more and more small nuclei and make a lot of heat. The heat released by the reaction turn water into gas and activates the steam turbine to make electricity. This process can caused explosion if there is too many neutron react at a time. In the other hand, the process can be ended if less than one neutron reacts. With fusion, it creates a lot more heat than fission does. Thus, fusion is more complicated. In order to recreate a new nuclear, we need to mix two protons together. These protons will push each other it is hard mix it. Scientists suggest that we need a really strong force to push the proton near enough to each other to form a nuclear. Nuclear power is not a safe fuel. Regardless of it uses, it can caused damaged to organism or death with its waste. Scientists build a closed tunnel to contain with nuclear waste to prevent radioactive. This tunnel is buried deep inside the earth’s crust and wait till the waste decay to the safe point. I think using nuclear power is a necessary solution for global warming. Nuclear power produces lots and lots of power without releasing CO2. Despite of it uses; nuclear power’s waste is really dangerous for human kind and living organism. It can damage the DNA, transform it or it can kill living organism. In my opinion, nuclear power is not a green power because it produces radioactive and will affect the living things soon or later.

** __Source__ ** : Zumdahl, Zumdahl, DeCoste. World of Chemistry. McDougal Littell, 2007. Print. http://i.imagehost.org/0364/Nuclear_Plant.gif

Quy Hien – Drake Period 3

** __Nuclear Power Energy__ **

Energy is released when the bonds between miniature particles within an atom are formed or broken, and that energy could be harnessed in favor of society’s demand for energy. Within an atom, there are neutrons and protons being at the nucleus. How they bond together to form the nucleus is by a very powerful force. Either the forming or breaking these forces of bond will result in the famous/infamous nuclear energy. First, to harness the potential energy within atoms, neutrons are to be shot into a relatively unstable and big atom (Uranium). Typically the atom then breaks, releasing a huge amount of energy. This process is called “fission”. What adds more to its potential is that once fission occurs, then neutrons spread with high velocity, colliding with other remaining atoms, resulting in a chain of fission that is named “chain reaction”. However, for a proper chain reaction to occur, the substance in context must be at a certain point of mass, also known as “critical mass”. Having a mass higher means explosion while lower means an anti-climatic result. Now facilities designed to harvest fission power use this reaction of “critical mass” to maintain a relatively safe condition while maximizing energy yield. The reaction emits heat energy. This heat then makes water turn into steam. The steam then is directed to motion a turbine, thus generating electricity that will support households. On the other hand, though even more powerful, fission’s cousin, fusion hasn’t found its place in servitude of human desire for power. Though very potent, fusion and fission have their own downsides. Namely, the by-product of fusion or fission reaction is radiation. Radiation is responsible for many health issues, posing a threat to health of living things. Also, radiation can alter our genomes, making possible deficiencies. Some of these genetic problems only materialize in offspring. What I think of this kind of energy is simply awe of how it could conserve matter while producing so much energy, as opposed to its wasteful predecessor. Though the backfires are disappointing (nuclear waste and all), I have strong confidence that the future will find a way to harness more power in a safer way. Also, I do wish for these nuclear power facilities to be more common as a power source all around the world. Many countries are entirely dependent on fossil fuel, something that’s slowly disappearing from human resource list.


 * __Source__ ** : Zumdahl, Zumdahl, DeCoste. World of Chemistry. McDougal Littell, 2007. Print.
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Hoang Ngoc An -Adriene Period 3



[] Nuclear Energy

The nucleus is a very attractive source of energy which produces the nuclear energy by bonding protons and neutrons in an atomic nuclei. There are two types of nuclear energy, nuclear fission and nuclear fusion. Nuclear fission was discovered in the late 1930s. Fission is to separate a heavy nucleus into two lighter nuclei. Fission reactions produce neutrons, so the process can be self-sustaining and is called the chain reaction. Fission is also developed as an energy source to produce electricity. Another nuclear energy is produced by fusion – the process of combining two light nuclei to form one heavy nucleus. Nuclear fusion produces more energy per mole than the nuclear fission does. However, to initiating the nuclear fusion reactions are more difficult than to initiating the nuclear fission reactions. The forces that combining two protons, which will repel because they have similar charge, must be greater and only at a very small distance. Nuclear energy are powerful and cause less damage to the enviroment, however, it can cause 3 kinds of damages: somatic (the organism being infected), genetic (damage to an organism’s offspring), and biological effects (change the chemical properties of the source). We should use it in the most limit way. My only concern about this topic is that the only element that can release nuclear energy is Uranium? Citations: “Nuclear Fusion forces diagram”, Wikipedia: The Free Encyclopedia. March 3, 2010 “Nuclear Fission and Fusion”, voightproject page, blogspot.com, February 13, 2008 Zumdahl/Zumdahl/DeCoste. World of Chemistry, Chapter 19: Radioactivity and Nuclear Energy, pg 683-pg690, 2007, Print.

//Nguyen Tran Binh Minh// //Period: 2// //Date: March 18, 2010//

//__**Nuclear energy**__// Nuclear energy is widely used in U.S. and consists of two ways of getting energy. By the way, nuclear energy is energy come from core of atom, which is nuclear. It gives us a great amount of energy. Usually, Uranium is used widely around the world as fuel for nuclear energy. Most of all, U-235 (type of uranium) is used more because these atoms are easily split apart, but they are rare. In nature uranium can be found in combination with other elements, so uranium is needed to be processed to a fuel. In addition, energy can be released in two ways: nuclear fission and nuclear fission. Firstly, nuclear fission is when atoms are split apart by neutrons. Secondly, nuclear fusion is when atoms are combined to form a big atom and release energy, but it’s still ongoing research and not many are used. There are two types of U.S reactors: boiling water reactors and pressurized water reactor. Firstly, most power plants use boiling water reactors, which use heat that produced during the fission to make energy. Water becomes steam, which moves the turbine-generators that produce energy. Also, there is cooling tower, which cool steam back into water and this water can be used again. Secondly, even though it not very common, power plants still used pressurizes water reactor, which use heated high pressured water that go through steam generator to make water outside of the tube become steam; and those steam will rotate the turbine-generator. Then the water that inside the tube flow back to the core, where it is heated again and procedure is repeated. Nuclear energy is not a clean energy, it cause a great harm to the surrounding. As you know, it’s radioactive and creates a large amount of radioactive waste, which will remain radioactive for thousand of years. Those wastes can make a great damage to animals and plants. While mining uranium or transporting it, fossil fuel are emitted, which are dangerous. A great amount water are used and polluted, which change quality of water (but those water that are discharge from power plant are not radioactive) and aquatic life. In my opinion, even though nuclear energy brings a large amount of energy, but the harm that it makes are enormous. It not only waste all the natural recourse, but it also make a great amount of radioactive waste that will remain for long time and causes a great harm to all kind of living organism. I think we shouldn’t use it too much because it will kill all the nature in near future. We can’t just wait till there is no nature left then stop it; we have to do something as well as disposing of waste where it can’t harm anything. Right now there are a few solutions to this problem, but I think if we united all our ideas and power we can make a wise decision that can benefit entire world. **Work Cited** URL 1: __[]__ URL 2: __[]__

Rys Hoang 4th period Thursday, March 18, 2010 Article of Nuclear As we have learnt about Nuclear, Nuclear is a small piece in atom, activates in the center of it. In each atom just has one nuclear and around it is electron. Nuclear carries the positive chart (+) and electron carries the negative chart (-). In any experiments of scientist about nuclear, they have proved that Nuclear is created by proton and neutron. Proton carries the positive chart and neutron carries none, so that why nuclear carries the positive chart in atom. In science, we separate nuclear into 3 parts of reactions, nuclear energy, nuclear fission, and nuclear fusion. First, nuclear energy is the movement of the electron around nuclear. Nuclear energy happens when nuclear fission process or nuclear fusion process releases the huge energy to outside. So what is the nuclear fission and nuclear fusion? Nuclear fission was discovered in 1930s. It is the process that separate nuclear into 2 or 3 nuclei with small mass. This process happens when the neutron go thought the nuclear making the reaction, release the energy to the outside and creating 2 or 3 different nuclei and also produce 2 or 3 protons ( like the picture on the left). Which nuclei and neutrons were produced, called the fission product. Opposite of the nuclear fission is nuclear fusion process; this process happen when 2 atom of deuterium combine together and making the nuclear with 2 protons and 2 neutrons inside, and the extra neutron. That nuclear was called helium (like the picture below). Our sun is where this process happen everyday. The center of sun is the place that the nuclear fusion happens and makes helium, releases the huge of energy to the outside. That one is making the light for us today. In conclusion, nuclear energy happens around us everyday, it is creating things and making energy. We realized the role of nuclear energy and use it in many facets of life. We learn and research about it, learn and search science about it.
 * __Source:__ World of Chemistry, page 683 - 692 **


 * Nuclear Energy**

Nucleus is a very attractive source of energy that can cause dangerous damages. Nucleus is produced in two different ways. The first one is nuclear fission - the process of splitting a nucleus into two or more smaller pieces. A self-sustaining fission process caused by the production of neutrons that proceed to split other nuclei is called chain reaction. To produce a chain reaction, the amount of fissile material called critical mass is needed. The second one is nuclear fusion - the process of combining two or more light nuclei to form a stronger one. Nuclear radiation can cause damages. There are two ways of damages by nuclear energy : somatic – damanage to an organism and genetic – damage to an organism’s offspring. Biological effects of radiation depend on its energy, its penetrating ability and the chemical properties of the sources. The article is a very useful source to study about nucleus, how the nucleus is produced and the danger of nuclear energy.




 * Reference : McDougal Littell. World of Chemistry. Using the Nucleus as a Source of Energy. Boston : Houghton Mifflin Company, 2007. Print. **

Karen Period 1

Michael Period 1 **What is the nuclear energy? Different between the nuclear fission and fusion**

Nowadays, energy is becoming a big issue for people to concern. Together with the development, people are using more and more energy, so they need to look for a type of energy for the future. Eventually, nuclear energy is one good source of energy for us. But, what is the nuclear energy? And what is the different between nuclear fusion and fusion? This article will help you to understand more about this type of energy, nuclear. First, what is the nuclear energy? It is an enormous energy that contains in inside the atom. Because the strong bonding of keeping the electrons and protons. One of the laws of the universe state that matter and energy cannot be created nor destroyed. But, they can change in form; therefore, the matter can be changed into energy. There is an equation for explaining that changing: E=mc2 (E: energy; m:mass; c:velocity or the speed of light). Moreover, nuclear fission is the process that split the atom’s nucleus apart. When the nucleus was split, there will be the enormous amount energy released. The energy is both heat and light. It just needs a small amount of the matter to create a huge amount of energy. Then the energy will transfer into electricity. The main “fuel” of the nuclear power plant is uranium. It is split in the controlled chain in the nuclear power plant is uranium. However, if the reaction is not controlled, it can become an atomic bomb. Fortunately, there is no suitable conditions exist in the nuclear reaction. Besides, the reaction also creates the radioactive, which could hurt people if it is released. There is a nother form of nuclear energy is fusion. Nuclear fusion is the term prefer to the process of joining smaller nuclei to make a larger nucleus. Nuclear fusion is found, when the sun uses this process to create heat, light and other radiation. Scientists are still finding a way to transfer the energy from the nuclear fusion into electricity. I think nuclear energy is one good source of energy for people to use. However, I believe that we have to really be careful with the process of produce energy. Because when the radioactive is released, it will be very dangerous for people. Moreover, I consider that this article I read is very helpful and give me a lot of new information, as well as it is quite easy to understand. Even though, I still have some questions: I do not know whether it is a clean energy or not; and is it worth for us to spend a huge amount of money to build the nuclear power plants? Citation: http://www.energyquest.ca.gov/story/chapter13.html

Wendy Kim Period 4 Nuclear energy Nuclear energy is one of the energy used most frequently in US, and many other parts of the world these days. Nuclear energy is a nonrenewable energy, as its source is coming mostly from Uranium, which we could find in rocks. This energy could make a lot more energy than fossil fuel, but it has a negative side, which is that it makes some radioactive wastes. It means that the chemicals that producing energy could break down our body cell’s chemical bonds. There are basically two ways to produce nuclear energy, which are fission and fusion. Fission is the way that you split a nucleus in to two stable nucleuses then use the energy produced in that reaction to heat the water, and steam from it becomes the power. If you have fission of one mole Uranium, you would get 26 million more power than energy produced from 1 mol of methane. Dangerous part of the fission is that if the cooling system has problems, it could be exploding. Fusions are harder to do, as we have to put two protons which are both having same charge which refuse to be combined together, but it could produce more energy. In my opinion, nuclear energy could be better than using fossil fuels as it could get a lot more energy by the similar amount of mass, but it couldn’t be better than clean energies like wind or solar energy as there are wastes, which could possibly harm people.

References: Article: Steven S. Zumdahl, Susan A. Zumdahl and Donald DeCoste, World of Chemistry, McDougal Littell, page 683~91, Print. Picture 1: UAE nears $40 billion nuclear power deal, Gaza Economy & Investment, http://1.b p.blogspot.com/ThWCQsU-awE/STN0rdEeOgI/AAAAAAAAAKg/envu9TUlckk/s400/nuc lear+power+plants.GIF

Kevin Pham Period 2 March 19, 2010 Uranium is an element in the periodic table in Chemistry and after This essay will include the introduction about some of Uranium’s effective to our life. Especially, it is talked about the nuclear energy in uranium. Nuclear energy is energy in the nucleus of an atom. Atoms are small article in uranium. However, to hold all of those atoms together, there are some bonds so that they link with each other. About nuclear energy, there are 2 types of them: nuclear fission and nuclear fusion. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. In nuclear fusion, when atoms are combined with each other, the energy is released. In the theory, this is how the sun released the energy. Right now, I will introduce with you the nuclear fuel, which is called uranium. Uranium is nonrenewable, it is a metal found in rocks all over the world. The symbol of uranium in chemistry is U. Most U.S. uranium is mined in the Western United States, this place provided a large amount of uranium for all over USA. During nuclear fission, a small particle called a neutron hits the uranium atom and splits it and released a large amount of energy, it was also called neutron to other uranium atoms, and the repeating over and over again. This is called a chain reaction because when the reaction was happening, they created a long structure has a shape of chain. Uranium is also a material to create A bomb for war, a chemical to cure some cancer, to use in X-ray. Human used the nuclear energy to build many nuclear factories in many developed countries to produce electricity for our daily life such as Russia, USA, India… Nowadays, Uranium and nuclear energy is quietly popular in many developed countries. The history of finding about the uranium and the advantages of nuclear energy was a long time. Both uranium and nuclear energy have a good like what I had told before that, curing cancer… However, they are also have disadvantage can cause a great damage for our peace and life. The purpose of each people uses it is different. Instead using them in the right way to make human’s better, some of them had tried to use it for their own purpose such as warfare, nuclear bomb. So we need to discover and find the best way of using to bring peaceful and better life for many people life in this world.
 * THE NUCLEAR ENERGY **

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