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DISCUSSION
The Advantage and Disadvantage of
Nuclear Power
Nuclear power is generated by using
uranium which is a metal mined in various part of the world. The first large
scale of nuclear power station was opened at Calder Hall in Cumbria, England in
1956.
Some military ships and submarines have nuclear power plant for engine. Nuclear
power produces around 11% of the world's energy needed, and produces huge
amounts of energy. It cause no pollution as we would get when burning fossil
fuels. The advantages of nuclear plant are as follow:
- It costs about the same coal, so it is not expansive to
make.
- It does not produce smoke or carbon dioxide, so it does
not contribute to the greenhouse effect.
- It produces huge amounts of energy from small amount of
uranium.
- It produces small amount of waste.
- It is reliable.
On the
other hand, nuclear power is very, very dangerous. It must be sealed up and
buried for many years to allow the radioactivity to die away. Furthermore,
although it is reliable, a lot of money has to be spent on safety because if it
does go wrong, a nuclear accident ca be a major accident.
People are increasingly concerned about this matter. In the 1990's nuclear
power was the fastest growing source of power in many parts of the world.
Source :
http://bos-sulap.blogspot.com/2010/02/contoh-example-of-discussion-text-on.html
the source of picture
- http://www.google.co.id/imgres?q=nuclear+energy&num=10&hl=id&client=firefox-a&rls=org.mozilla:en-US:official&biw=1152&bih=701&tbm=isch&tbnid=492P2NvFgj80_M:&imgrefurl=http://nuclear-power-plant.blogspot.com/2011_08_01_archive.html&docid=c1E1USB9PGNbHM&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBsy6m2aGrgDKh0M0hs8Uf3RHVfmenQ1IFeBI45VJGPbWVz912lFrqSfNloyyfqPURBB7NkObie5bG7spw_83JLxssW77S3u8bXpf0FZmPTU7msEUa7Lg6hSDKdeHRqB3ZWLmIF_IJgJwe/s1600/Nuclear_fireball4374952.jpg&w=705&h=599&ei=HiXGTvTfEcjKrAf61_2yDg&zoom=1:
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EXPLANATION :
How Venus Eclipse Happens
On May 16, 2010, people in most
regions in the world have seen a very rare natural phenomenon. It was Venus
eclipse. It was very rare amazing natural event. It was reported that the Venus
eclipse will seen again in the future in 2050. Do you know how this rare Venus
eclipse happens?
Well, actually Venus eclipse is like
Sun eclipse. Venus eclipses occurs when the position of the earth, moon and
Venus is parallel. Venus planet will slowly disappear for a moment because it
is covered the surface of the Moon. Venus planet seems to move to the back side
of the Moon.
The moon and planets are sharing a
similar apparent path in the sky. That is why, it is not unusual for the moon
to appear to pass close to Venus. In fact, the moon appears somewhere near it
about once a month. However, most people don’t see these events because they
are visible in the evening sky only half the time, and then only for a short
period after sunset. The apparent closeness varies from month to month as well.
- http://www.google.co.id/imgres?q=gambar+venus+eclips&hl=id&client=firefox-a&hs=MT5&sa=X&rls=org.mozilla:id:official&sout=0&tbm=isch&prmd=imvns&tbnid=gAxRtUOBVeTG3M:&imgrefurl=http://www.flickr.com/photos/45086187%40N02/favorites/page7/%3Fview%3Dlg&docid=9D0awWB8OFy33M&imgurl=http://farm5.static.flickr.com/4066/4611293965_35c4f646a6.jpg&w=500&h=333&ei=p2bGTs-6LoTXrQfk3pGZDg&zoom=1&iact=hc&vpx=499&vpy=206&dur=407&hovh=183&hovw=275&tx=99&ty=62&sig=116704657097597981685&page=2&tbnh=133&tbnw=191&start=12&ndsp=13&ved=1t:429,r:9,s:12&biw=1355&bih=510