Measuring waves in a solid

• What is one way in which energy may be transferred between stores?

  Waves
• What types of waves transfer energy but not matter?

  Mechanical and electromagnetic waves
• What are the main components of the practical for measuring waves in a solid?

  • Hold a metal rod at its middle point
  • Hit one end of the rod with a hammer
  • Use a smartphone app to measure frequency
  • Record the length of the rod
  • Calculate the speed of sound waves using frequency and wavelength
• How do you calculate the speed of sound waves in a rod?

  Using the frequency and wavelength recorded
• What should be included in the results table for measuring waves in a solid?

  • Frequency (Hz)
  • Length of rod (m)
  • Wavelength (m)
  • Wavespeed (m/s)
• What is the aim of the experiment described in the study material?

  To measure the frequency, wavelength, and speed of waves in a metal rod
• What is a potential hazard when conducting the experiment with the metal rod?

  Dropping the rod or hammer
• What is a consequence of dropping the rod or hammer during the experiment?

  Injury from falling objects
• What control measure should be taken to prevent injury from dropping the rod or hammer?

  Take care to hold equipment carefully
• What are the steps involved in measuring waves in a solid using the described method?

  1. Hold the metal rod at its middle point
  2. Hit one end with a hammer
  3. Measure frequency with a smartphone app
  4. Record the length of the rod
  5. Calculate speed using frequency and wavelength