Across
- 2. used in sunbeds and flourescent lamps
- 5. current x voltage
- 7. force which stops things sliding around
- 8. wave is parallel to direction of travel
- 11. plastic case so doesnt need earth wire
- 13. preventing energy loss(heat)
- 14. thin piece of wire that melts if there is too much current
- 16. wave vibrations at 90 degrees with direction of travel
- 17. useful energy output/total energy input
- 19. unit of frequency
- 23. streched length-origianal length of a spring
- 24. unit of pressure (kg/m3)
Down
- 1. family of transverse waves
- 3. force x perpendicular distance
- 4. circular movement of air around a room
- 6. movement energy
- 9. name of brown wire in plugs
- 10. distance from crest to crest (waves)
- 11. mass/volume
- 12. frequency x wavelength
- 15. very dangerous wave
- 18. number of waves per second (1/T)
- 20. heat energy
- 21. force/area
- 22. a push or a pull