3.10 know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space

Electromagnetic Spectrum:

• A continuous spectrum of waves of differing frequency.
• All electromagnetic waves have the following properties:
  • Transfer energy
  • Are transverse waves
  • Travel at the speed of light in a vacuum
  • Can be reflected and refracted