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Waves, sound and light

Physics

After this lesson, you should be able to:

  • Describe a sound wave as a longitudinal wave
  • Link sound waves to regular variations in the pressure of the medium
  • Justify the relationship between the speed of sound waves and the properties of the medium (for gases, liquids and solids)
  • Explain the concept of an echo
  • Use the wave equation to solve problems with sound waves that include applications such as sonar, ultrasounds and bats and so on
  • Relate characteristics of sound waves, such as pitch and loudness to familiar characteristics of waves, such as frequency and amplitude
  • Explain what ultrasounds are in terms of frequency and describe some of their uses

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