It is called thermal shield
A nuclear reactor generates heat by controlled nuclear fission. Primary coolant carries this heat away to make steam. If a reactor is not cooled, it will overheat. Even if it is shut down immediately, the radioactive fragments of fission in the core will still be undergoing radioactive decay. This will continue to generate a lot of what we call decay heat. This heat can be sufficient to melt the metal that forms the fuel elements if cooling is not maintained, and the result is a nuclear meltdown with various consequences.
The sun is a star, and it is also a nuclear fusion reactor. It is fusing hydrogen into helium to create energy via what we call the proton-proton nuclear reaction. Our local star has been doing this for billions of years, and will continue to do so for billions more.
A nuclear power plant produces electricity by harnessing the energy released from nuclear fission reactions in the reactor core. This process generates heat, which is used to produce steam that drives turbines connected to generators to produce electricity.
a nuclear engineer.....
This is going to be a big number! Each fission releases 200 MeV, and 1 MeV = 1.6 X 10-13 Joules, so 1 fission = 3.2 x 10-11 Joules. Now if the thermal power produced by the reactor is 3000 MW (corresponding to an electrical output of 1000 MW) this means 3000 x 106 Joules per second, or 3 x 109 Joules /sec. So the number of fissions/sec in the reactor is 3 x 109 divided by 3.2 x 10-11 , so if we call 3/3.2 = unity, for simplicity, the number of fissions per second is 1020. I said it would be big! Reactor physicists use a number called the neutron flux to describe the intensity of the nuclear fission process, this is the number of neutrons crossing an area of 1 sq cm per second. This number helps to define the fuel rating and effects on reactor components in the active core. Obviously the total number of fissions occurring in the reactor overall per second depends on this and the size of the reactor.
a ozone layer call the atmosphere is around the earth. it protects us from the harmful uv rays from the sun.however the is a hole in the ozone layer over the artartic ocean.the hole is becoming bigger and bigger.hence we are lesser protected by the atmosphere.
gravity.
damage to ozone layer is called ozone depletion. It is thinning of ozone layer.
The layer of bedrock near Earth's surface that forms a continuous shell around the Earth is called the lithosphere. This layer includes the crust and upper part of the mantle and is divided into tectonic plates that move and interact with each other.
No. The outermost layer of the Earth is called the crust.
inner layer? well, i guess you could call the organs and the organ tissue as the inner layer.
Floe