Gr 10 Physical Sciences Ch 7: Speed of a longitudinal wave
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Questions and Answers

What is the unit of measurement for wave speed?

  • joule per second (J·s⁻¹)
  • meters per second (m·s⁻¹) (correct)
  • hertz (Hz)
  • kilogram per second (kg·s⁻¹)

    • What is the formula to calculate the speed of a longitudinal wave?

  • v = λ × f
  • v = λ × T
  • v = T / λ
  • v = λ / T (correct)

    • What is the relationship between period and frequency?

  • f = T × 2
  • f = 1 / T (correct)
  • f = T - 1
  • f = T × π

    • What is the wavelength of a longitudinal wave?

    <p>The distance between two successive compressions</p> Signup and view all the answers

    What is the wave equation for the speed of a longitudinal wave?

    <p>v = λ × f</p> Signup and view all the answers

    What is the quantity of wave speed?

    <p>Wave speed</p> Signup and view all the answers

    What is the definition of wave speed?

    <p>The distance a wave travels per unit time</p> Signup and view all the answers

    If the frequency of a longitudinal wave is increased, what happens to its wave speed?

    <p>It increases</p> Signup and view all the answers

    What is the SI unit of wavelength?

    <p>meters</p> Signup and view all the answers

    If the wavelength of a longitudinal wave is increased, what happens to its frequency?

    <p>It decreases</p> Signup and view all the answers

    What is the relationship between the distance travelled by a longitudinal wave and its time taken?

    <p>The distance travelled is directly proportional to the time taken</p> Signup and view all the answers

    If the period of a longitudinal wave is decreased, what happens to its wave speed?

    <p>It increases</p> Signup and view all the answers

    If the wavelength of a longitudinal wave is doubled, what happens to its speed?

    <p>It doubles</p> Signup and view all the answers

    A longitudinal wave has a frequency of 50 Hz and a wavelength of 10 m. What is its speed?

    <p>500 m/s</p> Signup and view all the answers

    If a longitudinal wave travels a distance of 20 m in 2 seconds, what is its wavelength if its frequency is 10 Hz?

    <p>40 m</p> Signup and view all the answers

    What is the effect on the wave speed if the frequency of a longitudinal wave is halved?

    <p>It remains the same</p> Signup and view all the answers

    A longitudinal wave has a speed of 300 m/s and a wavelength of 15 m. What is its frequency?

    <p>20 Hz</p> Signup and view all the answers

    If the speed of a longitudinal wave is increased, what happens to its wavelength if its frequency remains constant?

    <p>It increases</p> Signup and view all the answers

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