That's because they are DANGEROUS, so the idea is to minimize the danger as much as possible.
Because they're dangerous.
Radioactive substances have half-lives. This is because the isotope constantly is changing from the radioactive isotope to a daughter element. For example, eventually, when uranium's radioactivity is gone, it becomes lead. After one half life of a radioactive substance, only 50% of that substance is still radioactive. Therefore, after one half-life, a piece of uranium is 50% lead and therefore %50 less radioactive. After another half-life, it has 25% of the original radioactivity, and 75% of the original uranium has become lead. This is the problem with radioactive wastes. It takes many years just for one half lives for some substances, such as uranium. Because radioactivity is harmful, those substances have to be stored until they are no longer radioactive. So, in short, the problem with disposing of radioactive wastes is that they have long half-lives. (although this is not true with ALL substances because some have short half-lives, but, in general, radioactive substances have long half-lives.
Radioactive substances are the things that put off radiation. These could be radioactive waste, or even radioactive materials not yet used.
Being toxic and radioactive uranium can be a source of pollution.
Radioactive substances are unstable as a result of the extra neutrons present in the nuclei of the substance. Non radioactive substances are stable.
Radioactive substances are unstable as a result of the extra neutrons present in the nuclei of the substance. Non-radioactive substances are stable.
Yes. Radioactive substances glow .
So far there are no known reasons to use radioactive substances in wind turbines.
There are too many radioactive substances to list here. For more information, please the the Related Link below.
Depends...
The amount of radioactive waste it produces. And the problem of disposing of that waste.
Those substances which are made of heavy metals are termed as radioactive substances. e.g. u-235...etc
Radioactive substances consist of nuclei that can't be held together by the strong force.