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Across
  1. 3. Microwaves are used to transmit signals for this broadcasting.
  2. 4. The only part of the EM spectrum seen by the naked eye.
  3. 6. A synonym for range or continuum in the context of EM waves.
  4. 9. The continuous range of electromagnetic waves.
  5. 10. The scientist who discovered the range of the visible light spectrum.
  6. 15. Infrared is used in burglar security systems.
  7. 17. A key application for radio waves.
  8. 18. Sometimes called Roentgen ray, represented by the letter 'x'.
  9. 19. Most of the high-energy gamma and X-rays are blocked by Earth's protective layer.
  10. 24. Ionizing radiation removes these from neutral atoms.
  11. 27. The property that decreases from radio waves to gamma rays.
  12. 28. The fundamental form of motion for all EM energy.
  13. 30. The main application of radio waves and microwaves.
  14. 31. The EM waves with the longest wavelength.
  15. 32. Microwaves help with weather by tracking storms.
  16. 36. Energy transmitted in the form of waves or particles.
  17. 38. Radiation that includes the other parts of the electromagnetic spectrum.
  18. 40. The order of wavelength from radio to gamma rays.
Down
  1. 1. Radiation discovered by Johann Ritter.
  2. 2. Nonionizing radiation still poses a risk to this.
  3. 5. The order of frequency or energy from radio to gamma rays.
  4. 7. Radioactive element that emits gamma rays.
  5. 8. The property that increases from radio waves to gamma rays.
  6. 11. Literally means "below red."
  7. 12. X-rays are primarily used for this type of imaging.
  8. 13. The primary source of UV radiation on Earth.
  9. 14. An application of infrared waves that allows seeing in the dark.
  10. 16. The last name of the German physicist who discovered the X-ray.
  11. 20. The discoverer of Ultraviolet radiation.
  12. 21. A severe and immediate effect of ionizing radiation.
  13. 22. The type of damage caused by UV radiation on the skin.
  14. 23. Infrared waves are essential for this household control device.
  15. 25. The EM waves with the highest energy.
  16. 26. The unit of measurement for frequency.
  17. 29. EM waves used for communication and weather forecasting.
  18. 33. Radiation with sufficient energy to remove electrons from neutral atoms.
  19. 34. The visible spectrum is often simply called this.
  20. 35. Gamma rays are used in medicine to destroy these harmful cells.
  21. 37. The ultimate, immediate effect of high-dose ionizing radiation.
  22. 39. The standard unit of measurement for wavelength.