Physics

2. What most appliances produce, which is wasted energy
5. The number of waves that pass a certain point each second
9. Maximum displacement of a wave
13. A type of radiation used for communication that can also be used to heat foods
14. Energy of moving electrons
18. The heart of a nuclear power station
19. Sound that is too high frequency to hear
20. An atom that does not have a neutral charge
21. A conclusion based from observations using reasoning skills and previous experiences
23. A decision reached by reasoning based from evidence
24. The fuel for nuclear power stations
25. A type of electromagnetic radiation that can cause sunburn and skin cancer

1. Turns kinetic energy into electrical energy
3. Movement energy
4. The distance between two equal parts of a wave
6. A method of testing different hypotheses
7. The unit of energy
8. Fundamental subatomic particle
10. A set of well tested hypotheses or principals that explains observations
11. Heat transferred by infra-red waves
12. This reduces when a material gets hotter and leads to convection
15. Changes the voltage of electricity
16. What kind of energy Energy stored in the central part of atoms
17. Sound that is too low frequency to hear
22. The force of attraction between objects with mass