Question detail
Why is it important to increase distance when handling radioactive sources?
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. It reduces the intensity of radiation exposure
- B. It makes the source easier to handle
- C. It increases the radiation emitted
- D. It allows for better visibility
Answer
The correct answer is A: It reduces the intensity of radiation exposure.
Explanation
The correct answer is A: It reduces the intensity of radiation exposure. This supports the learning objective "Describe safety precautions for handling radioactive sources, including reducing time, increasing distance and using shielding." 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: It makes the source easier to handle; It increases the radiation emitted; It allows for better visibility.
Common mistake
Safety Precautions Misunderstanding
Students often confuse the purpose of reducing time, increasing distance, and using shielding when handling radioactive sources, thinking they are interchangeable.
Emphasize that reducing time minimizes exposure duration, increasing distance reduces radiation intensity, and using shielding blocks radiation effectively. Each method serves a distinct purpose in radiation safety.
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