Kai

1. How nuclear energy is used to solve energy scarcity?

 * The rapidly growing population is having trouble to keep up with fossil fuel scarcity. One day, fossil fuel will run out and our only solution is to find and use different sources of energy to provide electricity around the world. Nuclear energy is a source of energy that can provide people with electricity. This can develop human development. **

2. How is nuclear energy produced?
**a) What is nuclear fission? ** The rods are placed in tanks of water inside the nuclear reactor. Uranium atoms capture free floating neutrons and then split into lighter elements and more free neutrons. This creates a controlled chain of reaction and generates a lot of heat. The heat energy turns the water into steam. The steam turns the turbines of generator that produce electricity.
 * A process that splits the nuclei of atoms and releases energy. nuclear fission is when a nuclear element breaks apart. Much like how uranium bombards in a chain reaction. **
 * b) How is nuclear energy used to generate electricity? **

3. What are the advantages and limitations of nuclear energy

 * Advantages **
 * Nuclear power provides electricity around the world. Nuclear power plants provide 6% of the world's energy and 14% of the world's electricity. Nuclear energy is very efficient and effective giving many people around the world, nuclear electricity. Nuclear radiation benefits us with pacemakers, x-rays and smoke detectors. **
 * Limitations **
 * Nuclear energy is very dangerous to particularly pregnant women during x-rays because the radiation will go through the baby, causing possibly damaged cells, genetic mutations and cancer. People are stuck with nuclear waste for a very long time. Human activity creates tons of dangerous radioactive nuclear waste every year. Getting rid of nuclear waste is very expensive and difficult. Radiation is highly dangerous to people. Some forms of radioactive decay throw off alpha particles which aren't very harmful to us unless we put them inside our bodies. Other types of decay throw off beta particles which can penetrate a few layers of our skin and do the same damage. Some radioactive decay throws off gamma ray which are the highest energy form of electromagnetic radiation. Gamma rays can burn our skin, penetrate our body's cells and even mess up our DNA. This causes cancer and genetic mutations. Costs a lot to buy, purify and transport.** [[image:https://encrypted-tbn1.google.com/images?q=tbn:ANd9GcSRC9g7SfSLkV8ls9uBwXjFhIL5p2_YPKNMSQtpazXEwCGS-NsQ width="306" height="218"]][[image:https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcSykU6kjrX5Y_0nQb585IK0vCaxn2yTBozAfyFlGvflP-eOD0Ff width="231" height="214"]][[image:https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcSrbPuXHFSVJJrT3hTiqyAxmKHcV7AKkSl6KPdr-ZYbprnBnOSe width="223" height="224"]]

4. How does nuclear radiation affect the environment?
** When nuclear energy is created, it leaves a lot of nuclear waste. It is very expensive and difficult to get rid of and it makes a lot of pollution. Nuclear radiation however, is also very toxic and dangerous to the environment. Nuclear radiation can cause acid rain, deforestation, air pollution and cause genetic mutations to animals. In some cases it can cause permanent deforestation,wipe out a whole specie of animals and deathly pollution to the extent. **

5. How does nuclear radiation affect health?

 * Nuclear energy produces electricity as well as nuclear waste and radiation. Nuclear radiation is very dangerous to particularly pregnant women during x-rays because the radiation will go through the baby, causing possibly damaged cells, genetic mutations and cancer. Radiation is highly dangerous to people. because radioactive decay throw off alpha particles, beta particles and gamma ray. Alpha particles are not very dangerous outside our bodies but when inside, it is like handing a loaded weapon to the enemy causing massive damage. Beta particles can penetrate a few layers of our skin and do massive damage. Gamma rays are the highest energy form of electromagnetic radiation. Gamma rays can burn our skin, penetrate our body's cells and mess up our DNA. This causes cancer and genetic mutations. **
 * Word **
 * Chain Reaction: When one causes one to cause one else again and again **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Fission: When something breaks apart **


 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Brain Pop Notes **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Every atom has energy trapped in its nucleus. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Nuclear power plants like to use an element called uranium as duel because its nucleus splits easily. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Uranium ore is mined and placed in metal pipes called fuel rods. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">These rods are placed in tanks of water inside the nuclear reactor. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Uranium atoms capture free floating neutrons and then split into lighter elements and more free neutrons. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">This creates a controlled chain of reaction and generates a lot of heat. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">The heat energy turns the water into steam. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">The steam turns the turbines of generator that produce electricity. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Nuclear energy produces nuclear wast that is highly radioactive that could stick around for thousands of years. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Technology improvements may give us safer ways to use nuclear energy in the future. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Nuclear fusion is the combining of atomic particles that would produce energy and harmless helium atoms. **


 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">Inquiry **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">A atom would have electrons, protons and neutrons. **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">The steady flow of electron are known as an electric current. **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">The protons and neutrons carry the weight. **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">The neutral neutrons keeps the positively charged protons together while protons attracts to negatively charged electrons. **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">The amount of protons state the atomic number of an element. **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">The mass number - the atomic number = the number of neutrons **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">Heavy element - too much protons and neutrons - unstable - take away protons or neutrons = radioactive decay **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">If protons are taken away - its a different element **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">If neutrons are taken away - its a different isotope **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">In a nuclear disaster the land would remain radioactive for a long time **

Sources **<span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">http://www.brainpop.com/science/energy/radioactivity/preview.weml ** **http://www.brainpop.com/technology/energytechnology/nuclearenergy/preview.weml** Michael Ng
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">1 Number of Protons and Neutrons **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">X Neutron (sub particles) **
 * <span style="background-color: transparent; font-family: Arial; font-size: 15px; text-decoration: none; vertical-align: baseline;">0 Number of Protons **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">When uranium bombards, it breaks down to krypton and barium and also releases a lot of energy. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">When someone consumes caesium, they will slowly die. Younger children are more in danger because their immune system are not fully developed and can't fight off the caesium and also because the damaged cells will grow and multiply so rapidly that they are near death. This is much like a glass of milk. When people are young the cells are multiplying quickly. Like how a glass of milk is poured into another glass, the milk first rushes into the other glass but after a while the milk starts to slow down and drip after drip the glass will be full. When caesium is consumed, this is the same to been injected poison. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">AdvantagesPeople are running out of fossil fuel to use as a energy sources. **
 * <span style="background-color: transparent; font-family: Arial; text-decoration: none; vertical-align: baseline;">LimitationsPeople are stuck with nuclear waste for a very long time.Radiation is highly dangerous to people. **