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Reducing Radiation Dose
A teacher investigated the radiation emitted by two radioactive sources.
The teacher took safety precautions during the experiment.
Suggest one safety precaution the teacher would have taken to reduce the radiation dose the teacher received.
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Marking points
- 1 Gives one specific precaution that reduces dose by increasing distance, reducing time or providing appropriate shielding/handling.
Full-mark answer
Handle the source with tongs so it remains farther from the teacher's body.
Why this answer loses marks
Wear ordinary protective clothing.
Unqualified clothing is not credited. Give a precaution that specifically increases distance, reduces exposure time, or provides effective shielding or remote handling.