Across
- 4. light source that produced light instead of natural lights produced by the sun
- 6. the transfer of energy by waves that can travel through a vacuum
- 9. the property of a wave related to its height from the baseline
- 15. this wave is also known as heat radiation
- 16. device used to send and receive radio signals
- 17. a french physicist who developed _ law
- 19. the EM spectrum is a continuum of EM waves arranged according to frequency and __
- 21. a german physicist who applied Maxwell theories to the production and reception of radio wave
- 23. property of EM waves allows them to travel through space without a medium
- 25. EM waves are classified by this property measured in hertz
- 26. the unit of measure for EM frequency
- 27. the bundles of wave energy
- 28. the charged particles that can produce electric field and magnetic field
- 30. the lowest point on a wave
Down
- 1. the change in direction of a wave passing from one medium to another caused by its change in speed
- 2. the segment of the EM spectrum that the human eye can view
- 3. waves that created as a result of vibrations
- 5. high frequency waves used for sterilization
- 7. the highest point on a wave
- 8. phenomenon in which certain materials emit light when exposed to EM radiation
- 10. waves used in kitchen appliances to heat food
- 11. a protective layer in the atmosphere that absorbs most of the sun's harmful rays
- 12. this radiation does not have enough energy to remove electrons from atoms and molecules
- 13. used to take images of bones in hospitals
- 14. type of EM wave with the longest wavelength
- 18. waves that propagated outward from the source of perpendicular to the direction of the waves travelling
- 20. the most energetic EM wave often used in cancer treatments
- 22. Michael Faraday is best known for his discovery of electromagnetic _
- 24. type of material that partially allows the transmission of light waves but scatters them
- 29. radiation used to detect weather patterns and storms