Nils

1. How nuclear energy is used to solve energy scarcity? How are we applying nuclear energy to solve problems?
Nuclear Energy can be used to solve energy problems because it generates a lot of electricity. It actually generates 1.5million times more electricity than fossil fuels and renewable energy sources. In the process of making nuclear energy, greenhouse gasses are not released, unlike fossil fuels. Also, there is plenty of uranium in the earth.

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 * Uranium ore is mined and put into fuel rods. These fuel rods are placed inside watertanks within the nuclear reactor. Inside the fuel rods, the process of nuclear fission splits up the nuclei of the uranium atoms. The uranium also at the same time captures free floating neutrons, then splitting up into lighter uranium atoms and free neutrons. This creates a chain reaction which generates a lot of heat energy. The heat energy heats up the fuel rods which turn the water into steam. The steam turns the turbines of the generators, which produces a massive amount of electricity. **=====


 * Nuclear Fission: Nuclear fission is a process where the nuclei of atoms are split and release energy. In a nuclear reaction, uranium is used in the process of nuclear fission because the nuclei of uranium atoms split easily, therefore more safely. When atoms are not properly split, it may start a chain reaction which may lead to a explosion. **
 * Nuclear Fussion: Nuclear fusion is a process which scientists are trying to find out how to combine atomic particles which produces energy, and only releases harmless helium atoms. **

3. What are the advantages and limitations of nuclear energy?
Nuclear Energy as a source: It generates 1.5 million times more energy than coal for the race amount of fuel. || The waste produced after nuclear fission releases radioactive rays called gamma rays, alpha rays and beta rays, which can effect human health and as well as the environment. This type of radiation is released because the radioactive isotopes are decaying. If these radioactive rays are absorbed into the body, it can damage the DNA, which can either kill it, or in worst cases make it reproduce. If it reproduces it causes cancer, which if it not spreads only causes tumorous cancer, but if it spreads, can lead to the fourth stage of cancer which is where the cancer is spread around your hole body. || The availability of uranium is not something which will last for ever. Evetually the uranium will run out because of overuse, therefore scientists will have to find another element where it's nucleus splits easily. || chlorofluorocarbon are not present within fuel rods or within uranium which means it can't release those gasses. || Nuclear waste sticks around for thousands of yeasr, for a fact, it takes at least 4.5 billion years to stabiles it's nucleus. This means that radioactive rays can be released for 4.5 billion years by a unstable radioactive isotope. Therefore the amount of radioactive rays which are released and fly through the air freely increases massively. ||  || Nuclear Weapons: between countries so the country won't be in trouble. In world war 2 Japan let the American army takeover Japan because they were afraid the US army would harm ,any more Japanese people. || If terrorists find a way to get radioactive waste or buy it from scientists, it can cause many problems in countries, and will lead to a war. || Scientists may sell radioactive waste to terrorists which can use the waste to make nuclear weapons. || Health: alpha rays, beta rays and gamma rays. When these rays are absorbed into the body, it damages the DNA. This can cause the DNA cells to either die or reproduce. If it reproduces, it causes cancer. If it doesn't spread it is called tumorous cancer, but if it spreads it causes the fourth stage of cancer, which is where cancerous cells are spread around the hole body. || Radioactive therapy doesn't only kill the cancerous cells but also good cells. ||
 * Advantages || Disadvantages || Limitations ||
 * Nuclear energy generates a lot of energy.
 * No greenhouse gasses are released when producing or using nuclear energy. Green house gasses such as carbon dioxide, mathane, ozone and
 * Advantages || Disadvantages || Limitations ||
 * Countries such as the US, can threaten terrorist and make sure they don't attack another country. For example, Japan surrendered after the USA nuclear bombed Hiroshima and Nagasaki. || Many people are killed when a nuclear bomb is dropped. For example, in Hiroshima, 70,000 people were killed by the nuclear bomb dropped by the US. || Many people are killed when a radioactive bomb is dropped or used against a country or city just like in Hiroshima where 70,000 people died after being nuked. ||
 * Nuclear weapons makes sure bonds are made
 * Advantages || Disadvantages || Limitation ||
 * When people have cancer, the doctors use radioactivity to kill the cancerous cells. || Radioactive isotopes release radioactive rays called,

4. How does nuclear radiation affect the environment?
1. Radiation can kill nearby trees and plants 2. When water is dumped back into either sea or lake, the change of temperature may kill fish and other aquadic animals because the temperature of the water will be to high for them 3. When radiation finds a way into the plant, the animals which eat it will be infected

5. How does nuclear radiation affect health?
Nuclear isotopes release rays called alpha, beta and gamma rays. If these rays (mainly beta and gamma rays) are absorbed into the body, it may damage the DNA. If you are lucky, it dies, but in worst cases, it may reproduce and cause cancer. If the cancer doesn't spread, it causes tumorous cancer, while if the cancer spreads, it can cause the fourth stage of cancer which is where the cancer spreads around the hole body. This means the doctors will not be able to remove the cancerous cells, therefore the person will die.

Bibliography: Buzzle. (n.d.). //Advantages and disadvantages of Nuclear energy//. Retrieved May 31, 2012, from Buzzle.com website: http://www.buzzle.com/articles/ advantages-and-disadvantages-of-nuclear-energy.html

Useful links:

http://www.buzzle.com/articles/advantages-and-disadvantages-of-nuclear-energy.html http://nuclearinfo.net/Nuclearpower/WebHomeCostOfNuclearPower