Question detail
Which statement best defines background radiation in GCSE Physics?
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. Ionising radiation that is always present in the environment
- B. Radiation produced only by medical X-ray machines
- C. Radiation released only during nuclear accidents
- D. Non-ionising radiation from visible light sources
Answer
The correct answer is ionising radiation that is always present in the environment. Background radiation is the low-level ionising radiation around us all the time from natural and artificial sources, so it is not limited to hospitals, accidents, or visible light.
Explanation
Background radiation means ionising radiation that is always present in the environment. This question tests the definition, so the correct option must include both ideas: it is ionising and it is continuously present. Medical X-rays and nuclear accidents may contribute to exposure in particular situations, but they do not define background radiation. Visible light is electromagnetic radiation, but it is not ionising radiation in this GCSE context. Keep background radiation distinct from a named source such as radon or a specific use such as medical imaging.
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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