Electromagnetic waves

• What type of waves are electromagnetic waves?

  Transverse waves
• How do reflection and refraction of light affect our perception?

  They explain how people see images, color, and optical illusions
• What are the key characteristics of electromagnetic waves?

  • They are transverse waves
  • They consist of oscillations in electric and magnetic fields
  • They can travel through a vacuum
  • They transfer energy as radiation
• What is the speed of electromagnetic waves in a vacuum?

  300,000,000 metres per second (m/s)
• What is the electromagnetic spectrum?

  • A continuous spectrum of electromagnetic waves
  • Includes waves with varying wavelengths, frequencies, and energies
  • Can be separated into seven distinct groups
• What mnemonic is often used to remember the order of the groups in the electromagnetic spectrum?

  Roman Men Invented Very Unusual X-ray Guns
• What does the wavelength of a wave refer to?

  The length of a single wave, measured from one wave peak to the next
• How is frequency defined in the context of electromagnetic waves?

  It is the number of waves produced each second, measured in hertz (Hz)
• Which color of visible light has the lowest frequency?

  Red light
• Which color of visible light has the highest frequency?

  Violet light
• What are the properties of electromagnetic waves?

  • They can travel through a vacuum
  • They transfer energy as radiation
  • They have varying wavelengths and frequencies
  • They are produced by oscillations in electric and magnetic fields