HAPPY CHINESE NEW YEAR!
Wishing everyone good health, happiness and good results for PSLE!!
Enjoy the holidays!
Question of the Day: (By Mdm Tan)
1) What is Nuclear Energy?
2) Advantages and disadvantages of Nuclear Energy?
3) Is it possible to use Nuclear Energy in Singapore?
*Mr Soh's question:
Are you for or against using Nuclear Energy in Singapore? Why?
Subscribe to:
Post Comments (Atom)
We are going to write on a piece of paper as our computer have some problems.
ReplyDeleteWe are for using Nuclear energy in Singapore because it does not pollute the air and might be the alternative source of energy when coals run out!
ReplyDeleteI dunno, I go with whatever they do. I guess I'm for it! Yay let me make a haiku!
ReplyDeletenuclear plants are cool
yet they are so expensive
dunno which to choose
:P
Mr Koh says that nuclear power is dangerous and can destroy cities. My friend said that Mr Koh says that we don't have a choice in the future as energy sources will run out or become very expensive. Happy new year everyone.
ReplyDeleteWhat is Nuclear Energy?
ReplyDeleteNuclear energy originates from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.
Advantages
a)Nuclear power plants don't require a lot of space.
b)It doesn't pollute the enviroment.
c)Nuclear energy is by far the most concentrated form of energy.
Diadvantages
One of the main disadvantages of nuclear energy is that nuclear explosions produce radiation, this radiation harms the cells of the body which can make humans sick or even cause them death. Illness can appear or strike people years after they were exposed to nuclear radiation.
• A possible type of reactor disaster is known as a meltdown. In a meltdown, the fission reaction of an atom goes out of control, which leads to a nuclear explosion releasing great amounts of radiation.
Here are some examples of meltdowns that have happened through history::
• In 1979, at the Three Mile Island near Harrisburg, Pennsylvania, the cooling system of a nuclear reactor failed. Radiation escaped, forcing tens of thousands of people to run away. Fortunately the problem was solved minutes before a total meltdown would have occurred, and there were no deaths.
• In 1986, a much worse disaster hit 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 upcoming years, thousands more may die of cancers induced by the radiation.
• 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. Nowadays, lots of nuclear wastes are stored in special cooling pools at the nuclear plants.
HaziqueLMH
Who's Umar?
ReplyDelete1) Nuclear energy originates from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.
ReplyDelete2) Nuclear power plants don't require a lot of space, it doesn't pollute, nuclear energy is by far the most concentrated form of energy(advantages).Nuclear explosions produce radiation, this radiation harms the cells of the body which can make humans sick or even cause them death, illness can appear or strike people years after they were exposed to nuclear radiation.A possible type of reactor disaster is known as a meltdown. In a meltdown, the fission reaction of an atom goes out of control, which leads to a nuclear explosion releasing great amounts of radiation(disadvantages).
3) It is possible for Singapore to use Nuclear Energy. It does not pollute the air and it doesn't require a lot of space.
I am for it, since it doesn't pollute the air and does not require a lot of space.
ReplyDeleteI'm writing on paper
ReplyDeleteNuclear energy is released by the splitting or merging together of the nuclei of atoms.
ReplyDeleteAdvantages
1)It does not take up alot of space
2)It does not pollute the enviroment
3)It is the alternative source of energy when fuel runs out
Disadvantages
1)Nuclear energy has to do with the inherent properties of nuclear fission. The energy and byproducts released by nuclear fission are health hazards-either because of being extremely hot
2)It is hard to store the nuclear waste
I am for it as it does not take up alot of space and does not pollute the enviroment.
1)Nuclear energy is produced from the splitting(fission) or merging(fusion) of the nuclei of the atom(s).
ReplyDelete2)Advantages:
1. It is eco-friendly.
2. It does not produce air pollutants.
3. It can be replace the other non-renewable sources like fossil fuels.
Disadvantages:
1. It cost a lot of money to build a nuclear plant.
2. It is very dangerous as radioactive waves can be released out of the plant and kill people.
3)It is impossible to build a nuclear plant in Singapore as if the nuclear plant melts, the radioactive waves could wiped out the whole population in Singapore like the incident of the Chernobyl disaster.
Mr Soh's qn: I against it. See above for the reason.
1)Nuclear energy is generated by nuclear fission, or breakdown, of nuclear fuel, like uranium. A lot of heat is generated which converts water into steam, driving turbines to generate electricity.
ReplyDelete2)Advantages:
1. It does not pollute the environment.
2.It does not take up a lot of space.
Disadvnatages:
1.Nuclear wastes remain radioactive even after thousands of years.
2.Accidents in a nuclear power station can be very dangerous, for example, the Chernobyl disaster in 1986 which killed thousands of people.
3.This form of energy is non-renewable since resources of heavy metals such as uranium are limited.
3)It is not possible beacuse Singapore is a small country and a nuclear accident or fallout would be disastrous because we can't afford the damage it would cause. Not like other larger countries.
*I am against using nuclear power beacause when there is a nuclear accident, it can kill people in Singapore.
Everybody got the information from the same website including us!
ReplyDelete1)What is Nuclear Energy?
ReplyDeleteNuclear energy begins from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.Now, nuclear energy provides about 16% of the world's electricity. Nuclear energy can be produced naturally or in man-made operations under human control.
By natural:Example,Sun or other stars can make heat and light by nuclear reactions.
By Man-Made:There is a machine called nuclear reactors and parts of the nuclear power plant will provide electricity for many cities.
2)Advantages of nuclear energy:
1)Nuclear reactions can release a million times more of energy as compared to hydropower or wind energy.So lots of electricity will be generated.
2)By using nuclear energy, no greenhouse gases(carbon dioxide, methane, ozone, chlorofluorocarbon) will be released.Now,greenhouse gases is quite a major threat,it will cause climate changes and global warming.Since there is no release of this greenhouse gases, using nuclear energy will cause very little effects to the environment!
3)The burning of fossil fuels will release poisonous carbon dioxide.By releasing this gases,it will be a threat to the environment and as well as human,but there is no release of this gases during nuclear reactions.
4)There will be high amount of energy produced per nuclear power plant.And also, nuclear fuel is inexpensive and easier to transport!
Disadvantages of nuclear energy:
1)Although there are large amount of energy being produced from a nuclear power plant but it will require large capital cost. At around 15-20 years,there is a need to develop a single plant. Hence, it is not very easy to build a nuclear power plant whenever we want. And also the nuclear reactors will work only as long as uranium is available, currently, the high reserves of uranium found on Earth, can only last for another 100 years,so nuclear energy will not last forever.
2)The waste that is produced after fission reactions will contain unstable elements and it is highly radioactive. It is quite dangerous to the environment as well as human health.Also ,it needs professional handling and it should be kept isolated from the living environment.
3)Is it possible to use Nuclear Energy in Singapore?
It is not possible.Singapore is a small country and it is hard to build a nuclear power plant. Also,by using nuclear power plant,It will cause radiation and it will harm us.
*Are you for or against using Nuclear Energy in Singapore? Why?
I am against of using Nuclear Energy in Singapore.By producing nuclear energy using nuclear power plant,it will cause radiation.Also,nuclear explosion might occur.The waste that is produced by the nuclear,where are we suppose to dump it?Since it contain poisonous gases,it should not be dump near us.Also Singapore is so small,is there really enough space for them to dump the waste?
Sorry.I made a mistake for this question.
ReplyDelete*Are you for or against using Nuclear Energy in Singapore? Why?
I am against of using Nuclear Energy in Singapore.By producing nuclear energy using nuclear power plant,it will cause radiation.Also,nuclear explosion might occur,It may kill us.
1)nuclear energy is produced by the fission or fusion of the nuclei of atoms.
ReplyDelete2)a lot of energy will be produced;however this energy is not easily controlled so it is not easily used.
it is environmentally-friendly as it does not produce chlorofluorocarbons.
however,it is hazardous to one's health as it may cause genetic mutations.
3)no, as if a nuclear power plant in singapore explodes, singaporeans may be wiped off the face of the earth as it is a very small country.
happy Chinese New Year!
ReplyDeleteNuclear energy is released by the fission or fusion of the nuclei of atom.The conversion of nuclear mass to energy is consistent with the mass-energy equivalence formula ΔE = Δm.c², in which ΔE = energy release, Δm = mass defect, and c = the speed of light in a vacuum.It was discovered by a French physicist Henri Becquerel in 1896. He discovered that photographic plates stored in the dark near uranium were blackened like X-ray plates, which had been just recently discovered at the time 1895.
ReplyDeleteA little more info. Those who wanted to be rich can use Nuclear to turn lead into gold or change any atom to any other atom. Sounds good.
70% from: http://en.wikipedia.org/wiki/Nuclear_Energy
30% in: my own words
Advantages:
ReplyDeleteIt does not take up alot of space and does not pollute the enviroment.
-Jiaru-
Disadvantages:
ReplyDeleteNuclear wastes remain radioactive even after thousands of years.Accidents in a nuclear power station can be very dangerous, for example, the Chernobyl disaster in 1986 which killed thousands of people.This form of energy is non-renewable since resources of heavy metals such as uranium are limited.
-Jiaru-
I heard that it costs a bomb. I ment more than hundreds of bombs...
ReplyDeleteI think that I am for it. Singapore is quite a rich country and it is ECO-FRIENDLY.
-Jiaru-
Two more weeks to exam. Wish everyone can get As and A*s.
ReplyDelete-Jiaru-
nuclear energy is a alternative source which we can use but however, if the nuclear machine (or thingy) explodes in singapore, singapore will be finished i am scared about that.
ReplyDeleteit is quite expensive and the people working with it must becareful as the machine (might) explode.
it may be usable but it might take up a lot of spaces and many trees in singapore may be needed to be cut down for the machines to be built
Hi everyone,
ReplyDeleteI think everyone is enjoying the holidays. Remember not to eat too much junk food. Do drink lots of water!
I am for to use nuclear energy in Singapore. I think technology is very advance now and the chances of an accident to happen is very low. The benefits from having nuclear energy will definitely outweighs the risk. It's a good calculated risk. However, the key question is, where are they going to build the plant? No one will want to live beside a nuclear plant!
in a remote place?
ReplyDeleteWhat is nuclear energy?
ReplyDelete- It is released by the splitting (fission) or merging together (fusion) of the nuclei of atom(s). The conversion of nuclear mass to energy is consistent with the mass-energy equivalence formula ΔE = Δm.c², in which ΔE = energy release, Δm = mass defect, and c = the speed of light in a vacuum (a physical constant).
Advantage 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.
Disadavantage of nuclear energy
-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.
HAPPY CHINIESE NEW YEAR!! EVERYONE!!
mr soh i will only reach singapore a day after school start. i dunnoe why its so but my parents want me to imform you so that yu will be imformed.
ReplyDeletei knocked my nose of the glass door of my house in malaysia and it bled. since i was in extreme pain,my parents brought me t0 the emergency hospital. after i reached the hospital, the doctor go help me take X-RAY then he say hor my nose some bones broke. then now okay le but got bruise i mean blue-black. luckily my nose didnt drop down or croak or whatsoever. luckily siaaa!!
ReplyDeleteNuclear energy is released by the splitting (fission) or merging together (fusion) of the nuclei of atom(s). The conversion of nuclear mass to energy is consistent with the mass-energy equivalence formula ΔE = Δm.c², in which ΔE = energy release, Δm = mass defect, and c = the speed of light in a vacuum (a physical constant).
ReplyDeleteit does not take up alot of space and it is eco friendly. but i am going against it cos i may kill us..
What is Nuclear Energy?
ReplyDeleteNuclear energy originates from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.
Advantages:
- It only takes a very small amount of fuel to create huge amounts of energy. One kilogram of uranium can produce nearly three million times the energy produced from one kilogram of coal.
- Only a relatively small amount of waste is produced for the amount of energy created.
- Nuclear power makes little contribution to global warming.
- Unlike many alternative energy sources, most of the technology needed is readily available.
- Nuclear power is the cheapest of all the alternative energy sources.
Disadvantages:
- Disposing of nuclear waste permanently is very difficult. The waste can remain dangerously radioactive for thousands of years.
- Leakages are a fairly common occurence. Higher than normal levels of radioactivity have been recorded in the Irish Sea due to leakages from the nuclear waste disposal plant at Sellafield in the northwest of England.
- There is concern over how nuclear waste can be transported safely and the potential risks of accidents.
- Major accidents or explosions at nuclear power plants can, and have, happened.
- Although intended for energy production, nuclear fuel can be used for destructive purposes if in the wrong hands.
Is it possible to use nuclear energy in Singapore?
Yes.
Are you for or against using Nuclear Energy in Singapore? Why?
I am against using Nuclear Energy in Singapore as once there is a leakage/accident, Singapore can be easily wiped out in a short period of time.
Seri and all the other people who are against nuclear energy, please note that nuclear accidents are extremely rare and apart from the Chernobyl incident in Ukraine in the 1980s, IIRC there have not been any major nuclear accidents in the world...also, following Chernobyl, the scientists and the power plant dudes have stepped up safety measures for nuclear plants (nuclear animals are non existent thank you very much :)
ReplyDeletewhat the heck is nuclear energy??? well nuclear energy is the energy formed when radioactive atoms split in a process called fission (not fusion, not fishing too). The heat that is generated can be used to drive a turbine that can produce electricity...
Advantages:
-Nuclear power plants dont need alot of space.
-Nuclear power plants dont produce so much harmful gases.
-Nuclear power plants dont run on fossil fuels.
-A great amount of energy can be produced in ashort amount of time. Not that having a nuclear power plant in your body will enable you to run at 200 km/h. LOL.
---
Disadvantages
-If the uranium/plutonium/whatever it is that they are using leaks, th consequences could be disastrous.
-If some terrorists get the nuclear fuel used thru who knows what way, they could make nuclear bombs (provided they know how to do that) and wreck havoc around the world.
-Nuclear waste can remain radioactive for years and is very hard to dispose of.
-What about accidents?
-Uranium is very hard to make, and is not plentiful.
---
Possible to use in spore? yes
---
For or against? Why? I'm for to use nuclear energy in s'pore. coal power plants release a bunch of harmful gases into the atmosphere, but nuclear plants emit far less. Furthermore, the advantages greatly outweigh the risks.
Happy chinese new year cum valentine's day cum total defence day! LOL!
btw, who's umar?
ReplyDeleteYa, who's umar?
ReplyDelete@HanChen. But still, if it is in the wrong hands (terrorists? Bad people I guess.), it would be dangerous to the people in the country. The terrorists can kill the people. Right?
ReplyDeleteNuclear Energy
ReplyDeleteNuclear energy is created when the nuclei of an atom is merged or splitted. The merging process is known as fusion and the splitting process is known as fission. This energy was first discoverd by French physicist Henri Becquerel in
1896.
EXTRA: How nuclear energy is created (more)
STEP 1: Uranium is taken from natural resources and put through an enrichment that makes the uranium ready for the nuclear reactor
STEP 2: The uranium goes through fission.A chain reaction occurs in the whole element.
STEP 3: This reaction creates heat which is used to boil water and create high pressured steam.
STEP 4: The steam is used to turn a turbine connected to the genarator.
Advantages
No.1: The nuclear reactors creates more power output than a typical coal plant because the reactors are genarally larger.
No.2: The reactors do not burn fossil fuels so it does not give out emissions or pollution to the air.Pollution and burning has caused a greenhouse effect which might affect the future generations.
Disadvantages
No.1: The boiled water used to create the high pressured steam (see EXTRA) becomes radioactive due to fission and that radiation can be very dangerous to living things. The radioactive material takes thousand of years to lose its radiation, so storage or exposure of this material can be hazardous.
No.2: Dealing with the nuclear waste. If the waste is stored at deep caves or mountain, then the harmful radiation will be out of reach from people.
No. 3: It is non-renewable. (Very huge disadvantage)
EXTRA TOO
Harmful radiation has had negative effects on people and animals that have included deformation, disease and death. Cancer can also develop from radiation but the extreme ones require a lot of exposure of radiation.
Nuclear energy in Singapore?
Yes, possible. I am not against it. I think it is a good idea as it doesn't harm the environment so our future generations won't suffer from pollution, which is good. But uranium is a non-renewable source of nuclear energy.
Happy CNY, Valentine's Day and Total Defence day. (WOW!) Riding a ferry isn't fun. Not at all. Beleive me. Seasickness.....
Lester
:D
@Seri: But if the terrorists ain't gonna wear protective gear they're gonna kill themselves too. And how are they gonna get in? Sneak in? They have to take away the uranium...how are they gonna do it? If they're gonna take them w/ their bare hands i'm not sure they'll survive since the radiation will penetrate their skin...if they wear gloves still no use as gamma (not bubblegum) rays will go through anything that is not lead or smth similar.
ReplyDeleteAlso, you can't just sneak into a plant, go inside, take the uranium and get out. I'm sure they have a bunch of security features, plus the bad dudes will have to know where the heck the uranium is.
ReplyDeleteHave you seen the quotation of the day? I think it's quite meaningful!
ReplyDeleteA stiff apology is a second insult... The injured party does not want to be compensated because he has been wronged; he wants to be healed because he has been hurt.
BTW, I came cross a few interesting questions and you can sound out your opinions and answers about them!
ReplyDeleteIf the 7-11 is open 24 hours a day, 365 days a year, why does it have locks on the door?
If con is the opposite of pro, is Congress the opposite of progress?
Why are cigarettes sold at gas stations where smoking is prohibited?
Why does the sun lighten our hair, but darken our skin?
Hi Yueling,
ReplyDeleteThose are very interesting questions! :)
Good examples of i _ _ _ y!
Hi Zhanxuan,
Your injury sounds serious! Hope you are better now! You should be more careful. See you in school soon.
more questions by joshua:
ReplyDeleteif a turtle doesnt have a shell, is he homeless or naked?
if crime fighters fight crime and fire fighters fight fire, what do freedom fighters fight?
why is a boxing ring square in shape?
if swimming is so good for your figure, why are whales so fat?
what do you do if you see an endangered animal eating an endangered plant?
if you take an Oriental person and spin him around several times, does he become disoriented?
mr soh, I don't know what is i_ _ _ y!
ReplyDeleteby the way here are more:
Why is abbreviated such a long word?
Why is the time of day with the slowest traffic called rush hour?
Why do they sterilize the needle for lethal injections?
Why doesn't glue stick to the inside of the bottle?
Why do you need a driver's license to buy liquor when you can't drink and drive?
Why are there flotation devices in the seats of planes instead of parachutes?
Why are they called apartments when they are all stuck together?
If flying is so safe, why do they call the airport the terminal?
http://jmm.aaa.net.au/articles/23191.htm
ReplyDeletetake a look at this, this is also the website where I got all my questions!
oh here's a joke:
ReplyDeleteOne day a father gets out of work and on his way home he suddenly remembers that it's his daughter's birthday.
He pulls over to a toy shop and asks the salesperson, 'How much for one of those Barbie's in the display window?'
The salesperson answers, 'Which one do you mean, sir? We have: Work Out Barbie for $19.95, Shopping Barbie for $19.95, Beach Barbie for $19.95, Disco Barbie for $19.95, Ballerina Barbie for $19.95, Astronaut Barbie for $19.95, Skater Barbie for $19.95, and Divorced Barbie for $265.95'
The amazed father asks: 'You what?! Why is the Divorced Barbie $265.95 and the others only $19.95?
The annoyed salesperson rolls her eyes, sighs, and answers: Sir..., 'Divorced Barbie comes with: Ken's Car, Ken's House, Ken's Boat, Ken's Furniture, Ken's Computer and...One of Ken's Friends.
you know what? Just go to this website and read it all for yourself:
ReplyDeletehttp://jmm.aaa.net.au/catalog/section/hm1.htm
What is Nuclear Energy?
ReplyDeleteNuclear energy originates from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.
Advantages of Nuclear Power
ReplyDelete· Efficient: Nuclear plants can produce an awful lot of electricity, up to about 2GW, which is comparable to coal plants.
· Reliable: There is no need to worry about interruptions to the power supply: as long as there is uranium, there will be power. This is a stark contrast to most renewable energies which depend on the activity of the weather.
· Clean: I'm using this term strictly to refer to the greenhouse gas emissions of a nuclear plant. There is some greenhouse gas emissions associated with the life cycle of uranium, as gases are emitted as it is mined and transported etc. However this is significantly less than the emissions associated with the burning of fossil fuels. Essentially, nuclear power would be "carbon-zero" if the uranium were mined and transported in a more efficient way. There are issues with radioactive waste, however.
· Supply: No, it's not going to last forever, but at least what there is more easily accessible than oil. 24% of uranium resources are in Australia and 9% in Canada. These are hardly politically unstable regions!
Nuclear energy is created by a controlled nuclear chain reaction that boils water, produces steam, and powers steam turbines. Although this is an excellent way to generate electricity, there are a few disadvantages of nuclear energy. Some of them include the waste, cost, and the possibility of accidents. This article will discuss the disadvantages of nuclear energy.
ReplyDeleteWasteOne of the biggest disadvantages of nuclear energy is the waste. Although the output of waste is relatively small, it releases harmful radiation as it decays. There is no method to get rid of the radioactivity of the waste or speed up the rate of decay. The waste must be sealed and buried in a safe location to prevent contamination of the environment and other people. Currently, there are no suitable locations that provide a permanent storage site for nuclear waste.
Accidents
Another one of the biggest disadvantages of nuclear energy is the occurrence of accidents due to core meltdown. These accidents happen when the core overheats and radiation products are allowed to escape the building. This contaminates the surrounding area with radioactive material that is very harmful people's health, often causing cancer.
Cost
Cost is also one of the major disadvantages of nuclear energy. It costs between three and five billion dollars just to build a nuclear power plant. Maintenance and operating costs are also high because lots of money must be sent on safety systems in case something goes wrong.
Weapons
One of the most feared disadvantages of nuclear energy is the potential for weapons. Each year, every nuclear reactor is capable of making enough plutonium to build over thirty nuclear bombs. Nuclear plants must be secured well enough to prevent this material from falling into the wrong hands.
uraniumOne of the final disadvantages of nuclear energy is the uranium supply. Nuclear energy can't completely replace other fossil fuels because there is not enough uranium to power the needed plants. Other types of reactors can produce energy using other materials, but they are slow, expensive, and the technology won't be completely ready for at least another decade.
These are the disadvantages of nuclear energy. The biggest problem is finding a way to safely dispose of the created waste. Another problem is that the nuclear plants cost up to five billion dollars just to build and have high operating and maintenance costs. A serious concern is the possibility of accidents because they can release harmful radiation.
yes but i an against it but if have no choice then we use it lol
ReplyDeleteNuclear energy is released by the splitting or merging together of the nuclei of atom.
ReplyDeleteAdvantages of using it.
1)It generates electricity faster than using hydropower or windpower. Hence, more energy will be generated.
2)High amount of energy produced per nuclear power plant. Nuclear fuel is not expensive and it is easier to transport.
Disadvantages of using it.
1)The waste will contain unstable elements and it is highly radioactive, after fission reactions. And it causes danger to the environment and human’s health.
I am against of using Nuclear Energy in Singapore.As by producing nuclear energy using nuclear power plant,it will cause radiation.
what is nuclear energy?
ReplyDeleteNuclear energy originates from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.
advantages
it is eco-friendly.
It is a good source of energy as it is far most the most concentrated form of energy.
Nuclear power plants don't require a lot of space.
Disadvantages
One of the main disadvantages of nuclear energy is that nuclear explosions produce radiation, this radiation harms the cells of the body which can make humans sick or even cause them death. Illness can appear or strike people years after they were exposed to nuclear radiation.
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. Nowadays, lots of nuclear wastes are stored in special cooling pools at the nuclear plants.
It is not possible for singapore to use it as we do not have enough land due to the countries size.In addition,it is not 100% eco friendly and its radiation is somehow lethal.
I am against it as it is HIGHly dangerous and we may not have enough space for it in singapore.
ReplyDeleteWhat is nuclear energy?
ReplyDeleteNuclear energy originates from the splitting of uranium atoms that is a process called fission. At the power plant, the process fission is used to generate heat to produce steam, which will be by a turbine to generate electricity.
Advantages
-It does not release greenhouse gases.
-it releases more energy compared to hydro and wind energy.
-High energy can be generated in one nuclear plant.
-It is easier to transport.
Disadvantages
-It can be used as nuclear weapons which are very destructive.
-The waste has unstable elements and is highly radioactive making it dangerous to environment and human health.
It is possible.
i am against it as it is bad for health.
nuclear energy is produced by the chain reaction of the splitting of a uranium atom.
ReplyDeleteI am against it as it is very unsafe and if something goes wrong, Singapore will be blown of the face of the map
Good point kaelan, let's hope it doesn't come to that! However, I'm still FOR it!
ReplyDeleteDo we have PE tommorrow?
ReplyDeleteSorry,wrote tomorrow wrongly!
ReplyDeleteVolleyball again
ReplyDeleteO.o???
@Yi xiong: Nuclear explosions produce radiation? We use nuclear explosions to generate energy? 0_o
ReplyDeleteHan Chen
at least you all get to have PE...
ReplyDeleteWhat is nuclear energy?
ReplyDeleteNuclear energy is produced when fission occurs within a nuclear reactor. Fission is basically when an atom splits into smaller parts. As this happens, energy is given off. Nuclear energy tends to produce a lot of nuclear waste and can be dangerous
Advantages
.Relatively little fuel is needed and the fuel is relatively inexpensive and available in trace amounts around the world.
.Fission is not believed to contribute to global warming or other pollution effects associated with fossil fuel combustion
Disadvantages
.Possibility of nuclear meltdown from uncontrolled reaction--leads to nuclear fallout with potentially harmful effects on civilians
.Waste products can be used to manufacture weapons
.High initial cost because plant requires containment safeguards
...
I am not against it
I fact I think that Singapore should use nuclear
energy.So that when enemy is intruding,Sigapore can bomb them...<<This is just a thought...
Btw do we hav PE if so,is it volleyball.i am curious.. o.o
driver's license = NRIC (identity card), under age not allow to purchase so you get it now hahahaa
ReplyDeleteQ:What is Nuclear energy?
ReplyDeleteA:Nuclear energy is released by the splitting (fission) or merging together (fusion) of the nuclei of atom(s). The conversion of nuclear mass to energy is consistent with the mass-energy equivalence formula ΔE = Δm.c², in which ΔE = energy release, Δm = mass defect, and c = the speed of light in a vacuum (a physical constant). Nuclear energy was first discovered by French physicist Henri Becquerel in 1896, when he found that photographic plates stored in the dark near uranium were blackened like X-ray plates, which had been just recently discovered at the time 1895.[1]
Nuclear chemistry can be used as a form of alchemy to turn lead into gold or change any atom to any other atom (albeit through many steps).[2] Radionuclide (radioisotope) production often involves irradiation of another isotope (or more precisely a nuclide), with alpha particles, beta particles, or gamma rays. Iron has the highest binding energy per nucleon of any atom. If an atom of lower average binding energy is changed into an atom of higher average binding energy, energy is given off. The chart shows that fusion of hydrogen, the combination to form heavier atoms, releases energy, as does fission of uranium, the breaking up of a larger nucleus into smaller parts. Stability varies between isotopes: the isotope U-235 is much less stable than the more common U-238.
Q:Advantages and disadvantages of using nuclear energy
A: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.
source: http://library.thinkquest.org/3471/nuclear_energy_body.html
Well, nuclear energy was discovered accidentally in 1896 by a French physicist Henri Becquerel. He found that photographic plates that had been stored near uranium behaved as if they had been exposed to light. They became fogged.
ReplyDeleteMarie Curie later discovered that ray emission by uranium was a property occurring in its very atomic structure.
Radioactivity is the emission of very small particles and energy waves from the atom. Therefore atoms are not indivisible or unchangeable. They have smaller parts that can be rearranged
Radioactivity from radium, thorium and other minerals, spread in the laboratories of these early investigators. This was because radioactive particles had turned into radioactive gas.
This led physicist Rutherford and chemist Frederick Soddy to conclude that radioactive elements could spontaneously change into other elements.
At each such transformation energy is released. And this is the decaying process, a chain of reactions.
As radioactive elements spontaneously change into other elements they ceaselessly emit radiation, that is until the atom will yet again have become stable. This is the "chain reaction" that we have come to use as an expression meaning that from one small stimulus a long series of reactions follow.
At every step of the nuclear chain reaction energy is emitted
vast amounts of energy are found within the tiny atom as a result of two nuclei or particles within the nucleus of an atom colliding and changing as a result of that collision. Two different nuclear products to the original products, before collision, are the result
Nuclear fission, the splitting of a heavy atom’s nucleus, releases great amounts of energy. For example the energy it releases is 10 million times greater than is released by the burning of an atom of fossil fuel. Besides it would take many hectares of land covered with solar collectors, wind farms or hydro-electric dams to equal this power
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
by CMD
what is nuclear energy?
ReplyDelete-Nuclear energy begins from the splitting of uranium atoms in a process called fission. At the power plant, the fission process is used to generate heat for producing steam, which is used by a turbine to generate electricity.Now, nuclear energy provides about 16% of the world's electricity. Nuclear energy can be produced naturally or in man-made operations under human control.
advantages:
-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:
-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.