What is the main use of Uranium 238?
It is used in military shells and bombs to make them penetrate armour better (because it is heavy). It can also be used in breeder reactors to make plutonium for fuelling other reactors, though this has not been used on any commercial scale as yet.
Is it true that the sun glows due to nuclear reactions in its corona?
No, the sun actually glows due to nuclear fusion reactions that occur in its core. In the core, hydrogen atoms fuse together to form helium, releasing a tremendous amount of energy in the form of light and heat. The corona is the sun's outer atmosphere and is much cooler than the core where nuclear fusion takes place.
Which process is responsible for the energy emitted from the sun and all other stars?
The process responsible for the energy emitted from the sun and all other stars is nuclear fusion. This process involves the fusion of hydrogen nuclei to form helium under extreme pressures and temperatures, releasing vast amounts of energy in the form of light and heat.
Knowing the temperature at a star's core lets us know how much energy is available. This is critical because it requires different amounts of energy to fuse atoms together.
The most "basic" star is one which is composed entirely of hydrogen, and through the massive gravitational pressure and heat, hydrogen is fused into helium. This is the simplest type of fusion. Once all of the hydrogen is used up, it requires more energy to fuse the helium into Lithium and other heavy elements. Essentially, the higher on the periodic table an element is, the more energy it takes to make.
Once you get to Iron, stars are unable to manufacture anything heavier because other physical laws prevent the build-up of sufficient energy in the body of a star. So, all of the heavier elements, we believe, are the products of super novas.
The energy released by these exploding stars is sufficient to make all of the other naturally occurring elements.
So, to get back to your question: The higher the temperature, the more energy. The more energy, the larger the element that can occur.
When different isotopes of hydrogen fuse in the sun nuclei of what are produced?
When different isotopes of hydrogen fuse in the sun, they produce helium nuclei. Specifically, the fusion process in the sun involves the conversion of hydrogen isotopes, such as deuterium and tritium, into helium-4 nuclei, along with the release of energy in the form of gamma rays and solar radiation.
How is the sun the ultimate energy source for food?
There are chemical reactions that only work in the presence of light. One of these is a rather complex reaction that combines carbon dioxide and water to form such things as simple sugars. To simplify:
12 CO2 + 11 H2O -> C12H22O11 + 12 O2
The reaction uses energy from light. A reverse reaction can be done, and uses the sugar and oxygen to give off energy. This is sort of thing is the basis of life. Notice that in storing energy, we are storing carbon and hydrogen.
The sugars do not last forever, as all carbon atoms have a tendency to break down. Sugars will turn into simple hydrocarbons over time, giving up the oxygen they hold, and taking on such forms as (for example) octane, which is C8H18. During the time the molecules decay, they are sometimes subducted into the earth's crust, forming coal and oil in the process.
So a chemical reaction that was fueled by light eventually causes a build up of underground carbon and oil.
What hydrocarbon is used in power generation?
Natural gas, propane, coal, any form of petroleum product can be used to produce power. Anything that can be burned can be used to make heat and therefore heat a liquid to turn a turbine.
Generally speaking --- Hydrocarbons, when heated, burn the hydrogen off and bonding it with an oxygen - as well as the carbon bonding with oxygen. If it was just hydrogen and carbon it would be a mostly pure reaction, but other items reside in most hydrocarbons.
Do all-star produce energy by nuclear fusion?
Yes, all stars produce energy through the process of nuclear fusion in their cores. This is where hydrogen atoms are fused to form helium, releasing vast amounts of energy in the form of heat and light.
Is radiation produced in the sun as nuclear fusion?
Yes, radiation is produced in the sun as a result of nuclear fusion reactions occurring in its core. These reactions convert hydrogen atoms into helium, releasing energy in the form of electromagnetic radiation.
What explains the position of those who oppose expanding nuclear power plants in the US?
Some opposition to the expansion of nuclear power plants in the US is generated by those who produce power by other means such as coal, oil, and gas. But the major opposition comes from the part of the population that has a somewhat exaggerated fear of nuclear power plants. Three Mile Island, Chernobyl, and Fukushima loom large as nuclear disasters. All three situations were the result of poor design and construction.
Well it depends, if you had one atom of uranium and a billion tonnes of thermite, the thermite would release more. Just as a 20 megatonne nuclear bomb would release more than a few grams of sulphur and iron binding.
In general though nuclear reactions release far greater amounts of energy.
In the fusion reaction on the sun what happens to hydrogen that does not convert into helium?
It just stays there waiting to be used-the sun has enough to last many billions of years and luckily for us the rate of burning has stayed fairly constant so far, but eventually it will run out of hydrogen and die.
How certain sources of energy are due to the sun?
All except geothermal which is due to the previous star that exploded and made the elements that make up the radioactive elements which coalesced with others to make the Earth and which decay providing heat.
How do stars produce large atoms?
Nuclear fusion. Stars like the sun are basically hydrogen bombs at their core. Hydrogen bombs are fusion bombs, building heavier elements up from hydrogen in their high pressure and temperature cores. All the chemical elements in your body apart from hydrogen were built up in stars that exploded long, long ago,
What do stars produce through fusion?
Stars produce energy through nuclear fusion, which involves the fusion of hydrogen atoms to form helium. This process releases a tremendous amount of energy in the form of light and heat, which is what makes stars so luminous.
How is the sun linked to nuclear energy?
The sun produces energy through nuclear fusion, a process where hydrogen atoms combine to form helium, releasing vast amounts of energy. This same process serves as the basis for nuclear energy on Earth, where nuclear power plants use controlled nuclear fission reactions to generate electricity.
Why is the sun the ultimate source of energy for all living things?
All plants rely upon the sunlight to photosynthesize the food they need to grow, and more importantly to the food chain, to create the nutritious food animals need to survive. Without sunshine, all plants die.
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Plants support the global food chain for all life. Plants are the original food source for all animals, even for carnivores and omnivores. Meat eaters may eat other animals, but eventually those animals in the food chain eat plants. Without plants, plant eating animals die, and without plant eating animals, all carnivorous animals die. Simply put, without plants, all animals die.
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Without the sun, all life dies.
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The sun also keeps the Earth at a reasonable temperature allowing life to evolve and continue, and it allows plants to grow through photosynthesis, which gives animals the energy they need to live and grow, and in the past to make fossil fuels which we use now.
What is a fission where does it take place in the sun?
Nuclear fission is the splitting of the nucleus of an element, it only happens to certain ones, most often Uranium 235 but also Plutonium 239. It does not take place in the sun at all, the sun is powered by nuclear fusion which is the joining together of hydrogen nuclei to form helium.
What is an uncontrolled nuclear fission?
There are both controlled and uncontrolled fission reactions. The reactors in nuclear power plants and submarines make use of a controlled nuclear reaction. Nuclear weapons make use of an uncontrolled reaction.
Can you use tritium water as moderator in nuclear reactor?
Yes, tritium water can be used as a moderator in a nuclear reactor. However, tritium itself is a radioactive isotope of hydrogen, so careful handling and safety measures are required due to its potential health risks. Research is being conducted on the use of tritium in nuclear fusion reactors, but it is not commonly used as a moderator in fission reactors.
How does fusion relate to the sun?
Fusion is the process by which the sun produces energy. In the sun's core, hydrogen atoms fuse together to form helium, releasing large amounts of energy in the form of heat and light in the process. This continuous fusion reaction is what powers the sun and allows it to shine.
What force opposes nuclear fusion in the sun?
The force that opposes nuclear fusion in the sun is gravity. Gravity is constantly pulling inward, trying to compress the sun's material into a smaller space. The outward pressure from nuclear fusion counteracts this force, creating a delicate balance that maintains the sun's stability.
How is electricity created from uranium?
When uranium is brought together in sufficient quantities, the radiation it naturally gives off produces a chain reaction (in which the nuclear particles produces by the breakdown of uranium nuclei interact with other nuclei and cause them to break down as well). This reaction produces a tremendous amount of heat as a by-product. This heat is used to heat a quantity of water, and the resulting steam drives turbines which produce electricity.
A star is the object that forms from the contraction of a large sphere of gases, leading to nuclear fusion of lighter elements into heavier elements. This process releases energy in the form of light and heat.
Where in space do fission and fusion happen?
Fission reactions typically occur in nuclear reactors where heavy atomic nuclei split to release energy. Fusion reactions, on the other hand, occur in stars like the Sun where light atomic nuclei combine to release energy. Both processes play a crucial role in generating energy and elements in the universe.