Across
- 4. Ioninsing radiation that isn't X rays
- 5. type of current made when radiowaves are absorbed by a receiver aerial
- 6. units of frequency
- 8. Colour of visible light with 3rd longest wavelength
- 9. TVs use this radiation
- 10. mobile phones use this radiation in communication
- 12. Thin glass cable used to communicate with visible light
- 14. microwaves pass through this layer of the atomosphere to reach satellites
- 16. microbes killed by gamma rays when surgical equipment is sterilised ster
- 19. oscillations of these particles can create radiowaves
- 22. all EM waves travel the same ...
Down
- 1. opposite of longitudinal
- 2. these molecules in food absorb microwaves and heat up the food
- 3. Radiation can cause skin cancer
- 7. this colour surface readily emits and absorbs IR radiation
- 11. This type of radiation (from 2 EM waves) can mutate DNA
- 13. long wave radio waves do this as they bend around the earth
- 14. Longer wavelength than visible light and used in thermal imaging
- 15. Number of waves that pass a point in one second
- 17. Xrays are ... by bone
- 18. cube with 4 different surfaces used to investigate IR emission
- 20. Too much exposure to Xrays can cause this disease
- 21. Smallest interval a measuring instrument can measure