What is the purpose of the chain reaction in a nuclear power plant quizlet?
A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).
Why is the chain reaction important in a nuclear power plant?
A nuclear chain reaction occurs when the output of one reaction causes more reactions to occur. ... It is these excess neutrons that can go on to cause more fission events to occur, hence the name chain reaction. Nuclear chain reactions are essential to the operation of nuclear power plants.Oct 18, 2021
What is the chain reaction in a nuclear reactor?
Nuclear chain reactions are series of nuclear fissions (splitting of atomic nuclei), each initiated by a neutron produced in a preceding fission. For example, 21/2 neutrons on the average are released by the fission of each uranium-235 nucleus that absorbs a low-energy neutron.
What is the energy chain for a nuclear power plant?
A nuclear reactor produces electricity in much the same way other power plants do. The chain reaction produces the energy, which turns water into steam. The pressure of the steam turns a generator, which produces electricity. The difference is in how the heat is created.
What is the purpose of the control rods in a nuclear reactor quizlet?
Control rods are used in nuclear reactors to control the fission rate of uranium and plutonium. They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning.
How are nuclear chain reactions controlled in nuclear power plants quizlet?
By control rods and the moderator. They absorb neutrons allowing the reactor to produce energy at a steady rate. In a controlled chain reaction, on average only one neutron from each fission will strike another nucleus and cause further stimulated fission to occur.
Why would a chain reaction need to be controlled in a nuclear reactor but not in a nuclear bomb?
The additional neutrons released may also hit other uranium or plutonium nuclei and cause them to split. Even more neutrons are then released, which in turn can split more nuclei. This is called a chain reaction. The chain reaction in nuclear reactors is controlled to stop it moving too quickly.
How does nuclear fission lead to a chain reaction?
Nuclear fission: In nuclear fission, an unstable atom splits into two or more smaller pieces that are more stable, and releases energy in the process. The fission process also releases extra neutrons, which can then split additional atoms, resulting in a chain reaction that releases a lot of energy.
What is needed for a nuclear chain reaction?
Fission chain reactions occur because of interactions between neutrons and fissile isotopes (such as 235U). The chain reaction requires both the release of neutrons from fissile isotopes undergoing nuclear fission and the subsequent absorption of some of these neutrons in fissile isotopes.
What is chain reaction explain with example?
chain reaction. In chemistry and physics, a self-sustaining series of reactions. In a chain reaction in a uranium-based nuclear reactor, for example, a single neutron causes the nucleus of a uranium atom to undergo fission. In the process, two or three more neutrons are released.
What is chain reaction with example?
chain reaction, self-sustaining reaction that, once started, continues without further outside influence. ... A line of dominoes falling after the first one has been pushed is an example of a mechanical chain reaction; a pile of wood burning after it has been kindled is an example of a chemical chain reaction.
How does a nuclear reaction work?
During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.Jul 14, 2021
Which best describes a chain reaction associated with a nuclear reaction quizlet?
Which best describes a chain reaction associated with a nuclear reaction? Neutrons released during a fission reaction cause other nuclei to split. ... Disposal of radioactive waste is a major concern in nuclear power production.
Who uses nuclear energy and for what purpose?
Radioisotopes, nuclear power process heat and non-stationary power reactors have essential uses across multiple sectors, including consumer products, food and agriculture, industry, medicine and scientific research, transport, and water resources and the environment.
How does a chain reaction work in a nuclear reactor?
- New neutrons are set free and when they run into other uranium atoms they split them again. When this continues over and over again, you call it a chain reaction . Control rods are put into the reactor so that the chain reaction doesn’t go on so fast. The chain reaction also gives off heat energy.
What is the function of a nuclear reactor?
- Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission.
What is the function of control rods in nuclear reactors?
- Control rods are an important technology for maintaining the desired state of fission reactions within a nuclear reactor. They constitute a real-time control of the fission process, which is crucial for both keeping the fission chain reaction active and
How does a nuclear power plant work?
- These reactors pump water into the reactor core under high pressure to prevent the water from boiling. The water in the core is heated by nuclear fission and then pumped into tubes inside a heat exchanger. Those tubes heat a separate water source to create steam. The steam then turns an electric generator to produce electricity.