Em spectrum

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Across
  1. 5. -the range of wavelengths or frequencies over which electromagnetic radiation extends.
  2. 6. -the lowest frequency waves that allow you to listen to your favorite station in the car
  3. 7. - the highest frequency wave and used to fight cancer
  4. 8. - the only light waves we can see
Down
  1. 1. - moderate frequency and used in remote controls
  2. 2. - longer wavelength than infrared waves and used to heat food quickly
  3. 3. -shorter wavelength than visible light but longer than x-rays
  4. 4. - shorter wavelength than regular light and used to view skeletal system