Question detail

Which of the following statements about background radiation is true?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Hazards and uses of radioactive emissions and of background radiation

Question

A. It is only harmful in large doses
B. It is always present and varies by location
C. It is only present in urban areas
D. It can be completely eliminated

Answer

The correct answer is B: It is always present and varies by location.

Explanation

The correct answer is B: It is always present and varies by location. This supports the learning objective "Explain why background radiation varies with location." in Background radiation because it uses the correct atomic and nuclear radiation relationship for Hazards and uses of radioactive emissions and of background radiation. The other options are less suitable because they do not match the required Background radiation idea: It is only harmful in large doses; It is only present in urban areas; It can be completely eliminated.

Common mistake

Misunderstanding Background Radiation Sources

Students often confuse natural and artificial sources of background radiation, thinking they are the same.

To fix this, students should categorize sources of background radiation into natural (like cosmic rays and radon gas) and artificial (like medical uses and nuclear power), and understand the differences in their origins.

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