Question 1
Question detail
What is background radiation and why does it vary with altitude?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
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exam_style
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Topic
Hazards and uses of radioactive emissions and of background radiation
Question
What is background radiation and why does it vary with altitude?
Answer
Background radiation is ionising radiation that is always present in the environment, originating from natural and artificial sources. It varies with altitude because cosmic rays, which contribute to background radiation, are more intense at higher altitudes due to the thinner atmosphere.
Explanation
This question tests the understanding of background radiation and its dependence on altitude, which is a key concept in the study of radiation. The answer demonstrates knowledge of both the definition and the factors affecting background radiation levels.
Common mistake
Altitude Effects on Background Radiation
Students often believe that background radiation is constant regardless of altitude.
Understand that background radiation can increase with altitude due to reduced atmospheric shielding from cosmic rays.
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