Communication

• What are radio waves made by?

  Oscillating charges
• What is the primary use of radio waves?

  Communication and broadcasting
• Which types of waves are used by satellites?

  Microwaves and radio waves
• Why are signals between satellites usually transmitted as microwaves?

  Microwaves have shorter wavelengths, allowing better transmission
• What is the main focus of Section 3 in the study material?

  • Waves
  • The Electromagnetic Spectrum