1. Alpha radiation cannot travel far through air. How far does it go? (1)
2. What material will absorb alpha radiation? (1)
3. Name the type of radiation that is stopped by a few mm of aluminium. (1)
4. Gamma radiation is very difficult to stop. What material will absorb most of it? (1)
5. Alpha radiation is the most "ionising". What does "ionising" mean? (1)
6. Name a detector of nuclear radiation. (1)
7. Which type of radiation is a helium nucleus? (1)
8. What is gamma radiation made of? (1)
9. Which radiation is made of high-speed electrons? (1)
10. State two safety precautions for handling radioactive sources. (2)
Total marks = (11)