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Uses Of Nuclear Radiation (GCSE Physics)

The following is a GCSE Physics test covering 'Uses Of Nuclear Radiation' from the broader topic Atomic Structure. The test is geared towards the AQA exam board style syllabus.
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A sample’s measured activity falls from 1600 Bq to 400 Bq in 20 minutes. What is the half-life of this sample?
Why is lead commonly used as shielding around X-ray or gamma sources?
What is a common industrial use of beta radiation?
Which statement correctly explains how radioactive tracers help follow movement inside the body?
What does the unit becquerel (Bq) measure?
Which isotope and property make Americium-241 useful in household smoke detectors?
Which of the following is a common medical use of gamma radiation?
Which property makes gamma radiation particularly suitable for treating deep-seated tumours compared with alpha radiation?
A sample has an activity of 400 Bq. After one minute (60 s), approximately how many decays would you expect to occur?
Which statement correctly ranks penetration power from lowest to highest?
Which type of nuclear radiation is a helium nucleus (two protons and two neutrons)?