Question Video: Identifying the Statement Which Best Defines Background Radiation | Nagwa Question Video: Identifying the Statement Which Best Defines Background Radiation | Nagwa

Question Video: Identifying the Statement Which Best Defines Background Radiation Chemistry • First Year of Secondary School

Which of the following statements best describes the term background radiation? [A] Background radiation is ionizing radiation present in the environment that is not due to a radioactive source. [B] Background radiation is the measurement of gamma rays emitted from a radioactive source when alpha and/or beta particles are released. [C] Background radiation is nonionizing radiation emitted from a radioactive source. [D] Background radiation makes up a small percentage of the count rate measured from a radioactive source. [E] Background radiation is ionizing radiation emitted from the back of a radioactive source

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Video Transcript

Which of the following statements best describes the term background radiation? (A) Background radiation is ionizing radiation present in the environment that is not due to a radioactive source. (B) Background radiation is the measurement of 𝛾 rays emitted from a radioactive source when 𝛼 and/or 𝛽 particles are released. (C) Background radiation is nonionizing radiation emitted from a radioactive source. (D) Background radiation makes up a small percentage of the count rate measured from a radioactive source. Or (E) background radiation is ionizing radiation emitted from the back of a radioactive source.

Before we answer the question, let’s clear a little space. When we perform an experiment with radioactive sources and measure their count rates, we’ll usually measure a nonzero count rate even when we’re not measuring anything. This is because of background radiation. On the earth, background radiation can come from radon in the soil, from cosmic radiation, man-made sources like nuclear reactors, or natural sources like potassium-40 atoms, which constitute a small fraction of all potassium ions. It is important to remember that background radiation is radiation that does not come from our radioactive source. Rather, it is radiation that is simply present in the environment.

Now that we know what background radiation is, let’s bring back the answer choices. We have determined that the statement that best describes background radiation is option (A). Background radiation is ionizing radiation present in the environment that is not due to a radioactive source.

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