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This is a nuclear change. The atoms change into helium atoms. The loss of mass in the change convert to energy, thousands of times the amount of energy of a chemical change.
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∙ 11y ago
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The suns energy comes from a process called what?
fusion; this process fuels the sun with hydrogen
How does sun produce thermal energy?
The thermal energy in sun is produced due to the process of nuclear fusion in which two hydrogen atoms combine to form one helium atom.
When does thermonuclear fusion reaction start?
In stars it starts due to the great pressure at the star's center, which compresses the hydrogen and raises temperature to a condition where fusion commences. On Earth in man made equipment such as tokamaks, the pressure is much lower and the temperature has to be raised to hundreds of millions of degC to start fusion in a plasma of deuterium and tritium
What is the source of the sun energy?
The sun shines because some of the nuclear energy is transformed into radiant energy. Enormous compression due to gravity and extremely high temperatures in the deep interior of the Sun fuse the nuclei of hydrogen atoms together to form helium nuclei. This is called thermonuclear fusion (a process that releases radiant energy, a small part of which reaches Earth).
Is nuclear a renewable energy?
Nuclear fusion is not renewable. It requires hydrogen nuclei as an energy source, and once these have been used in fusion they are not naturally replenished. In fact, fusion power has a very high energy change, rendering it near impossible to reverse the process. A star, for example, is powered by nuclear fusion, and will eventually die out due to a lack of hydrogen.
What elements can find in a star?
Mostly hydrogen, helium is also present due to fusion.
The suns energy comes from a process called what?
fusion; this process fuels the sun with hydrogen
How much Uranium is in the sun?
there is not uranium in the sun. the nuclear fusion is due to hydrogen that fuses to helium
Is the sun always a round shape?
its not perfectly round .It is because of continuous bombardment in plasma due to fusion of hydrogen and release of their energy.
water can gain a lot of energy before it changes state, this is due to the property of?
hydrogen bonding
Hypothesize what will happen when the sun exhausts it's supply of hydrogen?
When a main sequence star, such as our sun, exhausts it's supply of Hydrogen, fusion of Hydrogen to Helium ceases in the core. This results in cooling of the core and therefore causes it to contract. As the core contracts, the layers surrounding the star gain kinetic energy until the fusion of Hydrogen is possible in the outer layers. As these layers undergo fusion, they increase in temperature dramatically. The outer layers expand due to heat, and the star becomes massive; the main sequence star has evolved into a red giant. Fusion of Hydrogen to Helium continues in the outer layers, whilst the fusion of heavier elements such as carbon occurs in the core.
How does fusion in the sun happen?
At sun's surface, the temperature is enough for two hydrogen(deuterium) molecules to fuse and form a helium molecule. Due to availability of optimum temperature at the surface of sun, the reaction takes place continuously and energy due to nuclear fusion is continuously liberated.
How do stars from and get there light?
Stars form when clouds of gas collapse, due to their own gravitation. They get their energy from nuclear fusion - mainly, converting hydrogen to helium.
Is the total mass after fusion greater or less than before fusion?
The total mass is less after a fusion reaction. Some of the mass is converted into energy and given off due to the nuclear fusion reaction. For example. 2 atoms of hydrogen are fused to become 1 atom of helium. However, the helium atom will have less mass than the combined mass of the 2 original hydrogen atoms. The excess mass is lost via the energy given off from the nuclear fusion reaction.
Nuclear fusion powers the sun what elements are fused together in the sun?
It is just protons joining together, which are hydrogen ions, so the only fuel required is hydrogen, the reaction proceeds due to the high pressure at the sun's core, due to the immense gravitational compression. See the link below
What is a star that expands due to fusion?
A star that expands is running low on fuel, and is entering its end-of-life sequence. Its not due to fusion - all stars use fusion.
What makes up the the largest percent of energy released in nuclear detonation?
The greatest amount of energy released is due to the fission (atomic bomb) or fusion (hydrogen bomb) reaction after the the weapon is detonated by one of several means (gun-type trigger, implosion, or boost method). Fission reactions are responsible in most detonations for the greatest amount of energy released; this is due to the fact that hydrogen bombs (fusion) use fission explosions as a detonator, and that the fusion process can also cause further fission reactions.
