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The reactions in sun are nuclear fusion reactions.

In this reaction: four hydrogen atoms (4 protons) combine to form one helium atom (2 protons + 2 neutrons). (Two of the protons change to neutrons due to the weak interaction. Also, electrons are not so much an issue in the core due to the heavy ionization present due to the extreme temperatures.)

Energy is produced due to difference between the mass of the four hydrogen atoms and the mass of the helium atom.

Every second, in the sun, about 616 million tonnes of hydrogen with nuclear fusion transforms to 612 million tonnes of helium and the mass difference (4.3 million metric tonnes/second) gives energy equivalent to 3.8 x 1026 watt.

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12y ago
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11y ago

nuclear fusion....... Despite this being what almost all scientists have been led to believe it is wrong. The sun is actually powered by nuclear fission which takes place far beneath the suns molten surface. This is caused when the fusing elements finally reach critical mass and fissure, releasing the great energy that was accumulated during the fusion process. What we see and feel as heat and light are the results of fission. The lighter sub atomic particles and atoms are thus rocketed upward to the higher elevations where we can observe them with our detecting instruments. As we watch we can see the results as these lighter elements begin to reform through the fusion process and create the heavier elements. That's why most believe it is only fusion that powers the stars. Nope fusion takes energy......as it takes extreme heat and pressure (i.e. the sun's gravity) to cause the elements to fuse back together so they can thus again be compressed and smelted to again reach critical mass and fissure. Thus it will always take more energy to fuse atoms together than the fusion process will ever yield. That's recycling God's way.

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5mo ago

The sun's reaction is fusion, specifically hydrogen fusion, where hydrogen atoms combine to form helium. This fusion process releases a huge amount of energy that powers the sun.

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11y ago

nuclear fusion reaction

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11y ago

Sun energy comes from nuclear fusion.

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13y ago

Fusion

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Q: Is the sun's reaction fission or fusion?
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Why a fission reaction is neccasary for fusion reaction?

A fission reaction is not necessary for a fusion reaction. Fission reactions involve breaking apart heavy atomic nuclei, which releases energy. Fusion reactions involve combining light atomic nuclei, also releasing energy, but under different conditions. One does not require the other to occur.


Are nuclear bombs made with nuclear fusion?

Nuclear bombs can use either nuclear fission or nuclear fusion as the primary mechanism of energy release. Most nuclear bombs in current arsenals rely on nuclear fission reactions, while thermonuclear bombs use a fission reaction to trigger a fusion reaction.


Is it a fission or fusion reaction?

It depends on the specific context. Fission is the splitting of an atomic nucleus into two smaller nuclei, releasing energy, while fusion is the combining of two smaller nuclei into a larger one, also releasing energy. Each reaction has distinct characteristics and applications in different scenarios.


How is fusion used in a hydrogen bomb?

In a hydrogen bomb, fusion is used to release a large amount of energy through the fusion of hydrogen isotopes to create helium. This process, known as thermonuclear fusion, generates a massive explosion by harnessing the immense energy released during the fusion reaction. The process is initiated by a fission reaction that creates the high temperatures and pressures needed for fusion to occur.


Detonation of a fusion type hydrogen bomb is started by?

Detonation of a fusion hydrogen bomb is initiated by the primary fission bomb, which generates high temperatures and pressures needed to trigger fusion reactions in the hydrogen isotopes. The fission bomb compresses and heats the fusion fuel to the point where nuclear fusion reactions can occur, releasing vastly more energy than the fission reaction alone.

Related questions

Is reaction on sun a fusion or fission?

fission..sup


What is the opposite reaction to fusion?

fission


What are two types of reaction?

Fission and fusion


How a fusion reactor would be similar to a fission reactor?

explain how a fusion reactor would be similar to a fission reaction


Can fusion take place in the nucleus of a uranium atom?

Not fusion, but a fission reaction.


Atomic bombs are the result of what nuclear reaction?

fission and/or fusion


What kind of reaction can change an element into another?

Fusion or fission.


What type of reaction supplies the most energy?

fusion nuclear reaction followed by fission nuclear reaction


The opposite reaction to fusion is called?

Fission is the opposite reaction to fusion. Fission involves the splitting of a heavy atomic nucleus into lighter elements, releasing a large amount of energy in the process.


Do H-bombs deal with fission?

To some degree. Hydrogen bombs release energy via nuclear fusion, but they use a fission reaction to trigger the fusion.


Is nuclear energy a fission or fusion reaction?

Nuclear energy is either:fission reaction, orfusion reaction, orradioactive decay


Why a fission reaction is neccasary for fusion reaction?

A fission reaction is not necessary for a fusion reaction. Fission reactions involve breaking apart heavy atomic nuclei, which releases energy. Fusion reactions involve combining light atomic nuclei, also releasing energy, but under different conditions. One does not require the other to occur.