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 unwanted presence of radioactive atoms on or inside an object or person
- B. The exposure to ionising radiation from a radioactive source
- C. The process of radioactive decay
- D. The emission of radiation from a stable nucleus
Answer
The correct answer is A: The unwanted presence of radioactive atoms on or inside an object or person.
Explanation
The correct answer is A: The unwanted presence of radioactive atoms on or inside an object or person. This supports the learning objective "Explain why a contaminated object can continue to emit radiation." 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 exposure to ionising radiation from a radioactive source; The process of radioactive decay; The emission of radiation from a stable nucleus.
Common mistake
Contaminated Object Emission
Students often think that a contaminated object stops emitting radiation once it is removed from the radioactive source.
Emphasize that a contaminated object continues to emit radiation because it contains radioactive atoms, regardless of its location.
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