Radium is an example
Radioactive
This is a radioactive chemical element.
yes... nuclear fuel actually gives off less radiation than average nuclear plants.
Uranium is a natural, radioactive chemical element.
the sunlight gives off a form of radiation which causes sun burns.
Hydrogen gives off radiation, but uranium is more known for it's nuclear radioactivity due to its use in nuclear reactors.
coal gives off nuclear radiation
It's a semantic thing - by definition, if something gives out radiation, then it is radioactive. If an element gives off radiation, then it is a 'radioactive' element. If it does not give out radiation, then it is not 'radioactive'.
No, nuclear power is not the only energy source that gives off radiation. Coal-fired power plants, for example, also release radioactive materials into the environment. However, nuclear power plants do release more radiation than other energy sources.
Yes they were. See the nuclear explosion gives off radiation. you could get blind by the light, or radiation, radiation is energy transmitted in rays. So yes.
The nuclear waste gives off radiation. That radiation in large enough doses changes DNA in cells. When the DNA changes sometimes the cells can become cancerous. In even higher doses the cells will die.
The sun gives off radiation. An x-ray machine gives off radiation.