1. Alpha radiation cannot travel far through air. How far does it go? (1)
A few cm.
2. What material will absorb alpha radiation? (1)
A sheet of paper.
3. Name the type of radiation that is stopped by a few mm of aluminium. (1)
Beta
4. Gamma radiation is very difficult to stop. What material will absorb most of it? (1)
Few cm of lead
5. Alpha radiation is the most "ionising". What does "ionising" mean? (1)
Can remove electrons from atoms.
6. Name a detector of nuclear radiation. (1)
Photographic film, Geiger Counter, spark counter
7. Which type of radiation is a helium nucleus? (1)
Alpha
8. What is gamma radiation made of? (1)
Electromagnetic waves
9. Which radiation is made of high-speed electrons? (1)
Beta
10. State two safety precautions for handling radioactive sources. (2)
Handle with tongs, gloves, keep away from body, store in lead containers, do not allow under 18s to use sources.
Total marks = (11)