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 in a stable nucleus.
- D. The measurement of radiation activity in becquerels.
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 "Evaluate radiation risk using radiation type, source location, activity and half-life." 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 in a stable nucleus.; The measurement of radiation activity in becquerels..
Common mistake
Misunderstanding Radiation Risk Evaluation
Students often confuse the factors affecting radiation risk, such as mixing up the effects of radiation type with source location.
To fix this, students should clearly differentiate between the type of radiation (alpha, beta, gamma) and how the location of the source (inside or outside the body) impacts risk assessment.
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