Question detail
What is radioactive contamination?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. The process of emitting radiation from a source.
- B. The unwanted presence of radioactive atoms on or inside an object or person.
- C. The exposure to ionising radiation from a radioactive source.
- D. The decay of radioactive nuclei over time.
Answer
The correct answer is B: The unwanted presence of radioactive atoms on or inside an object or person..
Explanation
The correct answer is B: The unwanted presence of radioactive atoms on or inside an object or person.. This supports the learning objective "Explain why alpha-emitting contamination inside the body is particularly dangerous." in Radioactive contamination because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive contamination idea: The process of emitting radiation from a source.; The exposure to ionising radiation from a radioactive source.; The decay of radioactive nuclei over time..
Common mistake
Alpha Radiation Danger
Students often think that alpha radiation is not harmful when inside the body because it cannot penetrate the skin.
Emphasize that alpha particles are highly ionising and can cause significant damage to internal tissues, making them particularly dangerous when ingested or inhaled.
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