Across
- 8. the joining of two nuclei to form a new, heavier nucleus
- 10. the energy transferred in 1 second
- 11. the splitting of a heavy nucleus into two smaller pieces along with two or three neutrons
- 12. the change in the speed of light as it passes from one material to another
- 14. the weight of 1 kg / weight per unit mass
- 16. the bending of waves at a gap or obstacle
- 17. the distance travelled in 1 second
- 18. (of a radioactive source) is the number of decays per second
- 19. time for the activity of a radioactive source to decrease by half
- 20. high frequency electromagnetic waves (ejected from an unstable nucleus)
- 21. the force exerted on 1 square metre
Down
- 1. the energy required to increase the temperature of 1 kg of a material by 1 °C
- 2. specific latent heat of ____________ of a substance - the energy required to change 1kg of the substance from liquid to gas (at its boiling point)
- 3. a measure of the biological effect of a radiation (given the symbol ωR)
- 4. a fast moving electron (ejected from an unstable nucleus)
- 5. the charge transferred in 1 second
- 6. a helium nucleus (ejected from an unstable nucleus)
- 7. the change of velocity in 1 second
- 9. the energy given to each coulomb of charge by the power supply or battery
- 13. when an atom gains or loses electrons
- 15. the distance travelled by light in 1 year