A teacher uses a radioactive source in a science lesson.
Give two precautions the teacher should take when handling the source.
The teacher holds the source with long tongs.
Explain why this reduces the risk to the teacher.
After the lesson, the source is stored in a box lined with lead.
Explain why.
Ionising radiation can damage cells in the body.
Describe how ionising radiation can lead to cancer.
97 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.