Splitting an atom is Fission.
Fission.
No. Nuclear Power does not require sunlight. Nuclear Fission (Nuclear power) is the splitting of an atomic nucleus, when the nucleus splits into its component parts it realeses a huge amount of energy. Disambiguation: Nuclear Fusion is what occurs in stars. It is when two or more atomic nuclei fuse and form a single heavier nucleus. This is usually accompanied by the release of massive amounts of energy.
nuclear energy
Energy is released in nuclear fission and fusion, this is a fact of the physics of the nucleus. This energy can be captured and harnessed as thermal energy (heat)
In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts (lighter nuclei), often producing free neutrons and photons (in the form of gamma rays).
There are two: Nuclear Fission and Nuclear Fusion. Fission is when a neutron is fired at an element with a high atomic number (usually Uranium) which then splits, releasing energy and more neutrons. this produces a chain reaction, which continues until all nuclei have been split. Fusion occurs in stars and a few experimental reactors, and happens when two forms of Hydrogen nuclei (Deuterium and Tritium) fuse into an unstable nucleus, which in turn splits again into Helium and a spare neutron. Fission can start at any temperature, but Fusion only when Hydrogen is in a plasma state.
That is nuclear fission. An example is that of a Uranium-239 atom undergoing beta decay. That is, a neutron in the nucleus ejects and electron, becoming a proton, resulting in Uranium-239 becoming Neptunium-239.
No, two nuclei do not combine to form one nucleus in nuclear fission. It is the process of nuclear fusion that speaks to the combination of two nuclei to form one nucleus. The two nuclei are fused to form a new nucleus. Nuclear fission is the "breaking" or "splitting" of an atomic nucleus into two (or possibly more) smaller fragments.
Nuclear fusion refers to a nuclear reaction wherein two light nuclei fuse to form a heavier nucleus. This process releases energy.
You are thinking of nuclear fusion, where in the stars hydrogen forms into helium with energy release
First high speed neutrons, thermal energy and gamma rays are released then the byproducts emit a bit more energy in the form of beta decay.
it is (c), nuclear energy, in other words changes in the nucleus, which determine the energy and type of particle.