In areas of high temperature and high pressure
No. Volcanic eruptions can build mountains and form new land. Many occur in remote areas where there is not much to destroy.
No they can occur at anytime.
Certainly, minor rumbles occured without any damage in Washington Dc recently. often there are seismic shakes in areas sparsely populated that are only traced on instruments and no damage, let alone deaths, occur.
No. Tsunamis can also occur as a result of landslides, volcanic eruptions, meteor impacts, and underwater explosions.
Not everyone, no. Earthquakes happen in certain areas and only those areas will feel it. Of course it depends on how strong the earthquake is.
No place, we have not yet determined how to make a fusion reactor. Only fusion bombs.
No, because the highest amount of energy needed in a nuclear fusion is 40,000,000 K, which is only known to occur on the sun.
The rest of the sun is too cold and too low pressure.
Nuclear fusion is used only in experimental installations.
Nuclear fusion takes place only in the core of the Sun, or any star. Extremely high energy (temperatures) are required to force atomic nuclei together. The fusion reaction releases heat energy, which continues the fusion of other nuclei.
The only place in the universe where nuclear fusion can occur on its own is in the interior of stars. After closely observing nature, and adapting its laws to fulfill human requirements, our advanced civilization has succeeded in creating nuclear fusion at will, on a small scale. Unfortunately, the only useful application successfully developed so far with our superior intellect is the construction of nuclear bombs and weapons.
Nuclear fusion of light elements is the process operating in the stars to produce energy, and needs very high temperature to occur. Experiments on earth to aim at producing useful power from fusion have been progressing for many years. The reactants most likely to be used are isotopes of hydrogen, deuterium and tritium. These need to be heated to some hundreds of millions of degrees kelvin before reaction starts. Fusion reactions have been seen, but only for less than 1 second so far. Fusion is not a chemical reaction, it is a nuclear process.
Nuclear Fusion only releases energy when elements that are higher than what Nuclear Fusion produces certain sotopes of lighter elements.
Only at the core, where the temperatures and pressures are high enough.
Up to now only in H-bombs. Experiments in fusion are on going though.
Never, only fusion
Krypton is an element, and all elements are the result of nuclear fission, nuclear fusion or radioactive decay. Krypton is one of the byproducts of the nuclear fission of Uranium and Plutonium, either from atomic bombs or nuclear reactors. Since Krypton is not one of the results of a natural radioactive decay chain, the only other possible source of Krypton is from nuclear fusion, and the only source of fusion powerful enough to produce it would be a supernova.