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  • sun, fusion of hydrogen nuclei making helium nuclei (not radioactive)
  • nuclear reactor, fission of uranium nuclei making a wide variety of different fission product isotopes having mass numbers from 72 to 161 (all very radioactive)
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Q: How are nuclear reactions that take place in the sun different from the nuclear reactions that take place in a nuclear reactor?
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What is the difference between the nuclear reactions taking place in the sun and the nuclear reactions taking place in a nuclear reactor?

The sun's nuclear reactions are fusion reactions at extremely high temperatures and pressures, while the nuclear reactor's nuclear reactions are fission reactions at typical temperatures and pressures for earth.


What part of the nuclear powerplant does the chain reaction occur?

In the reactor core, which is the volume filled with the fuel assemblies


How is the heat generated by the reactor core of a nuclear power plant used to provide power to building?

Within the reactor core of a nuclear power plant all the actions and reactions take place. These reactions release energy in the form of heat. This can be harnessed to provide power to the building.


What is a part of a nuclear power plant that undergoes a fission reaction?

Nuclear fission takes place in the nuclear fuel rods that are placed in the reactor core that is situated in the reactor pressure vessel. The reactor pressure vessel is usually situated inside the reactor containment.


How is the number of neutrons in an assembly involved in creating a sustained nuclear chain reaction?

This answer can not be accurately answered without first knowing what type of nuclear reactor it is. A pressurized-water nuclear reactor is probably the most common so I'll briefly talk about some factors that affect the number of chain reactions in that type of nuclear reactor. First of all, the temperature of the water entering the reactor core will affect the number of chain reactions. The colder the water, the greater the number of reactions. This is primarily because the colder water is more dense and thus releases more neutrons which speeds up the chain reaction rate. Of course, reactor operators, wishing to control the number of chain reactions in order to make the reactor stable may raise or lower "rods" which will be made of a material that tends to absorb neutrons and thus lowering the chain reaction rate. These are the two most common factors affecting chain reaction rate. Would delve further into this question but it gets rather complicated at this point.

Related questions

What is the difference between the nuclear reactions taking place in the sun and the nuclear reactions taking place in a nuclear reactor?

The sun's nuclear reactions are fusion reactions at extremely high temperatures and pressures, while the nuclear reactor's nuclear reactions are fission reactions at typical temperatures and pressures for earth.


What is the place where controlled nuclear fission reactions take place?

In the core of a nuclear reactor


What is the difference between the nuclear reactions taking place in the sun and in a nuclear reactor?

the suns nuclear reactions happen at extreme temperatures we do it at lower temps


In a nuclear power plant fission reactions are controlled by inserting what?

In a fission reactor, control is implemented by inserting control rods into the reactor. These are made of a material that absorbs neutrons, and prevents a reaction from taking place.


What part of the nuclear powerplant does the chain reaction occur?

In the reactor core, which is the volume filled with the fuel assemblies


What type of reaction take place in a nuclear reactor?

Nuclear fission, not to be confused with fusion.


Why does the core of the reactor have a moderator?

The core of the reactor contains the nuclear fuel. Having a moderator in place within the core ensures that the nuclear fuel is processed at an accurate time duration. This can prevent serious problems from occurring within the entire nuclear reactor.


What is Reactor number four?

The #4 reactor is the reactor at the Chernobyl Nuclear Power Plant (Pripyat, Ukraine) that exploded on April 26, 1986. It is still the worst nuclear accident to ever take place anywhere.


Where does nuclear fusion occur in a nuclear plant?

No place, we have not yet determined how to make a fusion reactor. Only fusion bombs.


How is the heat generated by the reactor core of a nuclear power plant used to provide power to building?

Within the reactor core of a nuclear power plant all the actions and reactions take place. These reactions release energy in the form of heat. This can be harnessed to provide power to the building.


What is a part of a nuclear power plant that undergoes a fission reaction?

Nuclear fission takes place in the nuclear fuel rods that are placed in the reactor core that is situated in the reactor pressure vessel. The reactor pressure vessel is usually situated inside the reactor containment.


What are Controlled nuclear chain reactions?

Those reactions that take place in functioning nuclear reactors (i.e not Chernobyl or Fukushima when the accidents happened).