Exploring Radiation

2. Absorbed dose is measured in _______.
3. Type of radiation that is part of the EM spectrum.
8. The total effect caused by exposure to radiation depends on the absorbed dose, type of ionising radiation and type of _______ exposed.
10. Negatively-charged particles in an atom.
11. Most common source of background radiation, a radioactive gas released from the ground.
13. Common fuel for nuclear fission.
16. Process by which a nucleus splits into two pieces releasing energy.
21. Process by which the neutrons produced in fission go onto to cause further fission reactions, which create more neutrons, which cause more fission reactions and so on.
22. Decrease the rate of reaction in a nuclear reactor.
24. Famous nuclear disaster that occurred in Ukraine in 1986.
25. Time taken for the activity of a radioactive source to half.

1. Nuclear fusion requires the hydrogen fuel to be heated to such a high temperature it becomes _______.
4. Beta radiation can pass through paper but is absorbed by a few centimetres of _______
5. Process by which two nuclei fuse releasing energy.
6. The type of atom is determined by of these in the nucleus.
7. The absorbed dose is energy absorbed per unit _______.
9. Radiation causes photographic film to _______.
12. Radiation that comes from natural and artificial sources and surrounds us at all times.
14. The Equivalent dose is the absorbed dose multiplied by the radiation _______ factor.
15. Gamma rays can be used as a _______ to accumulate in specific tissues or organs for diagnostic purposes.
17. Activity is the number of radioactive nuclei that _______ per second.
18. Alpha particles are composed of two protons and two neutrons - a _______ nuclei.
19. You should always use these when handling radioactive sources.
20. The process whereby an atom gains or loses electrons.
22. Radiation can ionise living tissue which can lead to _______.
23. Increases the rate of reaction in a nuclear reactor.