Question detail
Why can background radiation levels be higher in some areas than others?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Hazards and uses of radioactive emissions and of background radiation
Question
- A. Local rocks may release different amounts of radon gas
- B. The Sun sets at different times in different places
- C. Air temperature changes the charge on all atoms
- D. All human activities produce the same radiation dose everywhere
Answer
Local rocks may release different amounts of radon gas. This is the correct option for Background radiation because it directly matches the physics required by the learning objective: Define background radiation as ionising radiation that is always present in the environment..
Explanation
Local rocks may release different amounts of radon gas is correct. In Hazards and uses of radioactive emissions and of background radiation, this answer fits Background radiation because it uses the exact idea needed for Define background radiation as ionising radiation that is always present in the environment.. The distractors are wrong because they either switch the source category, miss the nuclear process, confuse natural and artificial radiation, or describe a related idea without answering this question. For full marks, name the correct option, connect it to the objective wording, and separate it from the nearest misconception in Unit 4.4 Atomic Structure.
Common mistake
Misunderstanding Background Radiation
Students often confuse background radiation with radiation from specific sources, thinking it only comes from artificial sources.
Emphasize that background radiation is ionising radiation that is always present in the environment, originating from both natural and artificial sources.
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