No. The sun produces energy by fusion. It is joining hydrogen atoms into larger helium atoms, which releases energy.
Man-made nuclear reactors produce energy by fission. They break large atoms into smaller atoms, which also releases energy.
No, nuclear activity is not a characteristic of living things. Nuclear activity refers to processes that involve changes in the nucleus of an atom, such as radioactive decay or nuclear reactions, which are not exclusive to living organisms. Living things do not exhibit nuclear activity in the same context as atoms or nuclear reactors.
No, all the uranium on earth was produced in supernova explosions that occurred more than 6 billion years ago, there is no more arriving on earth (except small amounts in meteors and they got their uranium from the same supernovas as did earth). Without building reactors that burn plutonium if we use up all the uranium-235 it will become impossible to build a nuclear fission reactor (nuclear fusion reactors might become possible someday, but not yet).
Nuclear material for nuclear reactors are usually obtained from uranium. Uranium is obtained from uranium mines (open pit or underground mines) the same way mining for other minerals. Uranium then passes through different processes until getting it in a suitable form for fabrication into nuclear fuel.
No, nuclear reactions refer to any processes involving changes in the nucleus of an atom, which includes both nuclear fission and fusion. Nuclear fusion specifically refers to the process where two atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy.
The heat produced by controlled nuclear reactions is used to operate steam turbines that generate electricity in nuclear power plants in much the same manner as coal or oil fired fossil fuel power plants, except the nuclear plants do not produce carbon dioxide and other 'greenhouse gases' released by burning fossil fuels.
They all use nuclear fission
Nuclear energy is released when U-235 undergoes fission, and that takes place in nuclear reactors (or nuclear weapons). So a reactor is a thing constructed to produce nuclear energy.
yes. If they ever perfect hydrogen fusion reactors, then maybe someone will have to come up with a clearer description, but until now, they are the same.
They're mostly the same, except that nuclear reactors aimed at breeding more fissile material use expensive primary coolant instead of cheap water.
No, nuclear activity is not a characteristic of living things. Nuclear activity refers to processes that involve changes in the nucleus of an atom, such as radioactive decay or nuclear reactions, which are not exclusive to living organisms. Living things do not exhibit nuclear activity in the same context as atoms or nuclear reactors.
The processes that are occurring in the present are the same processes that occurred in the past.
Yes, it generally is but a nuclear plant could refer to nuclear reactors which are basically the things that produce the power. So in essence, yes, a nuclear plant is the same thing as a nuclear power station
Nuclear reactors are fairly accurately displayed on television, though it depends on the show, sometimes they are way over exagerated.
The idea that processes occurring now on Earth are much the same as those that occurred long ago is called uniformitarianism. This principle suggests that the same natural laws and processes that operate in the present have always operated in the past to shape the Earth's surface.
All thermal reactors, that is those using a moderator to slow down the fission neutrons, use the same reaction. In the US all commercial reactors (104 of them) are either PWR or BWR types.
The graphite used in graphite moderated nuclear reactors is produced in the same type of electrical furnace as is used to produce ordinary graphite, except there must be no boron in any part of the furnace.
I don't know of any such arrangement. Medical isotopes are produced in small research type reactors where samples can be introduced into the neutron flux in reentrant tubes (commonly called thimbles) and irradiated, then quickly removed and used. Large commercial power reactors don't have these facilities.