Examples of Graded One World Essays In your groups, read through these sample paragraphs of other students one world Nuclear energy debate essays. Use the IB criteria to grade and give feedback on each sample paragraph. These examples should help you understand what is required of you to attain the highest level IB grade (5-6).
SAMPLE INTRODUCTIONS- SAMPLE 1
Is using nuclear energy to generate electricity the best way? Is there other better alternative energy source that is better than nuclear energy? Nuclear energy has been a national strategic priority for Japan since 1973. Japan’s reactors have provided about 30% of the country’s electricity (World Nuclear Association, 2011). During 11 March 2011, one of the nuclear reactors in the northeast of Tokyo has exploded and there have been confirmed news of radiation leak in the area. Due to this accident Chancellor Angela Merkel in Germany has temporary shutdown few of the oldest nuclear reactors to run through some maintenance. In this essay I am going to talk about is nuclear energy the best way to generate electricity for this world or is it better to use other alternative energy like hydroelectricity. In my opinion, having nuclear energy to provide electricity can be both an advantage and disadvantage. SAMPLE 2
Since 1973, nuclear energy has been used as a national strategic priority, and it accounts for almost 30% of total electricity production in Japan (World Nuclear Association, 2011). However, on March 11, 2011, an earthquake occurred in Japan, damaging the nuclear reactors to the northeast of Tokyo. As a result, it led to radiation release. It brought great shock and fear to the people in the area, and around the world they have been driven out of their homes due to uncertainty. Such a situation had made the people around the world have negative viewpoints on the safety of using nuclear energy, and disputes about whether they should continue using it have been brought up among them. In this essay, mechanism of nuclear energy, nuclear accidents, impacts of nuclear energy, usage and effectiveness of an alternative energy resource to it will be discussed about in regards to three sciences, chemistry, biology, and physics. Also, advantages and disadvantages of using the alternative energy instead of nuclear energy will be analyzed in areas of economic and environmental factors. SAMPLE 3
March 11th, 14:46. A level 9 magnitude earthquake strikes Japan in the north-east coast. Even the well equipped country for earthquake was crippled by this one of the worst earthquakes in human history (Grimston, n.d). This earthquake also triggered one of the most hidden dangers in the daily lives of people, a nuclear crisis. In my essay, I will talk about the mechanism of nuclear energy, how the earthquake caused the nuclear accident, how these accidents impact on human and environment, and how an alternative energy could replace the dangerous nuclear energy. SAMPLE 4
Nuclear reactors provide electricity for many countries such as the United States, Japan, China and France. With fossil fuel supplies set to run out within the next 50 years (Carbon Counted, 2011), nuclear energy was soon seen as an excellent alternative by many due to relatively low costs and zero greenhouse gas emissions, and with various other economical and environmental benefits. However, nuclear reactors also come with economical, environmental and safety drawbacks as well, nuclear accidents being the main problem with examples like Chernobyl in 1986 and the recent Japan accident. SAMPLE SCIENCE EXPLANATIONS
Figure.7: A DNA with a broken phosphate backbone due to nuclear radiations (The University of Utah, n.d.).
Another way ionizing radiations causes mutation is that as it strikes at a gene or cell’s DNA, the ionizing process would break the bonds between the oxygen and phosphate groups, which thus separates a strand of DNA into two (as shown in figure.7) (The University of Utah, n.d.).
Diagram 5 is a pie chart showing what radioactive sources people are exposed to without many of them having the slightest idea of. According to the chart, we get 50% of radiation from natural sources and the rest from manmade sources. This shows that radiation is all around us, and that the two added together are less than 0.7 millirem (< 10 millisieverts) – not nearly enough to cause any damage at all.