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Atomic and Nuclear Physics
Quick questions on Uses and hazards of radiation explained: O-Level Physics
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is uses of radioactivity?Show answer
Radioactivity has many beneficial uses, each chosen to match the type and half-life of the radiation:
What is background radiation?Show answer
Background radiation is the low-level ionising radiation that is always present around us. Sources include radon gas from rocks and soil, cosmic rays from space, food and drink, and artificial sources such as medical X-rays. It must be subtracted when measuring a source's true activity.
What is q1?Show answer
State one medical and one industrial use of radioactivity. [2 marks]
What is q2?Show answer
Explain why ionising radiation is harmful to the body. [2 marks]
What is q3?Show answer
State three precautions for handling a radioactive source safely. [3 marks]
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