Starter quiz

  • What is an echo?
    • When a person repeats a word over and over again
    • When sound waves reflect back so a sound is heard more than once  ✓
    • When sound waves refract from a surface
    • When a sound wave is absorbed into the air so it can be heard for a longer time
  • The material or substance that a wave is travelling through is called the wave ______.
    • 'medium' ✓
  • A wave has a frequency of 2 Hz and a wavelength of 10 m. What is the wave speed?
    • 0.2 m/s
    • 5 m/s
    • 12 m/s
    • 20 m/s  ✓
    • 100 m/s
  • The time taken for one oscillation is called the ______ of a wave.
    • 'period' ✓
  • Which one of these does not describe the wavelength of a wave?
    • the distance from peak to trough  ✓
    • the distance from one peak to the next peak
    • the distance from one trough to the next trough
    • the distance from one part of a wave to the same part of the next wave
    • the distance travelled by a wave during one period
  • Which word means a result is close to the true value?
    • precise
    • repeatable
    • reproducible
    • accurate  ✓
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