Physics (Radioactivity)

1. electromagnetic wave with highest frequency and shortest wavelength
2. gamma can be reduced or stopped by ______
5. radioactive decay occurs in ______ of an atom
9. is a negatively charged electron
11. beta particle has a ________ charge
12. when nucleus undergo alpha decay the mass number will decrease by ______
13. beta can be stopped by _______
15. alpha has the ___________ ionisation power compared to beta and gamma
16. uses of radioactivity in archaeology
17. nuclear process happens in nuclear power station

1. detector used to measure count rates of radiation emitted
3. beta decay occurs when _____ splits into proton and electron which emitted as beta particle
4. where two hydrogen isotopes combine together to become helium nucleus and release a large amount of energy
6. gamma is not deflected by electric and magnetic field because it has no ______
7. alpha can be stopped by ______
8. time taken for half of the unstable nuclei to decay
10. consist of two protons and two neutrons (helium nucleus)
14. where neutral atom gain or lose electrons and become ions