Question Video: Identifying Artificial Sources of Nuclear Radiation | Nagwa Question Video: Identifying Artificial Sources of Nuclear Radiation | Nagwa

Question Video: Identifying Artificial Sources of Nuclear Radiation Science

Which of the following is not a natural source of nuclear radiation? [A] Earth [B] A nuclear power station [C] The Sun

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Video Transcript

Which of the following is not a natural source of nuclear radiation? (A) Earth, (B) a nuclear power station, (C) the Sun.

The question asks about types of nuclear radiation sources. The question asks which of the options given is not a natural source of nuclear radiation. If something is not a natural source of radiation, it must be an artificial source. This means people have done something to the source to change how much nuclear radiation it emits.

The Earth is radioactive. More accurately, some rocks in the Earth are radioactive. These rocks have not been affected by people to make them radioactive; they are naturally radioactive. The Sun is radioactive. The Sun has not been affected by people to make it radioactive; it is naturally radioactive. A nuclear power station contains radioactive material. This material is naturally radioactive. However, in the power station, people do things to the radioactive material that makes its nuclei more likely to decay. And so the radioactive material decays quicker than it normally would.

We see then that the nuclear radiation from a nuclear power station is emitted due to changes made by people, which means by artificial changes. The correct answer is option (B), a nuclear power station.

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