Radioactivity
Radiation Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across: 1. The process by which elecron are removed from atoms by radiation. 3. High frequency electromagnetic radiation. 6. Gamma radiation can be used to do this to surgical instruments. 9. The positively charged particle in a nucleus. 10. Atoms of the same element with different numbers of neutrons. 11. The charge on a nucleus 12. The charge on an electron 14. An alpha particle is the same as the nucleus of this element. 16. This can be treated with gamma radiation. 17. A thin sheet of this will stop alpha particles. 18. A thick wall of this is needed to stop most gamma radiation.
Down: 2. A few centimetres of this should stop beta particles. 4. This field will deflect alpha and beta particles. 5. The particle in orbit about a nucleus of an atom. 7. Alpha and Beta particles are deflected in opposite directions in this field. 8. A small amount of radioactive element placed in the body system in hospital. 12. Uncharged particle in the nucleus. 13. This particle consists of two protons and two neutrons 15. This particle is a fast moving electron.