Gr 10 Physical Sciences Ch 7 SUM: Longitudinal waves
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Questions and Answers

What does the amplitude of a longitudinal wave represent?

  • The distance between two successive compressions
  • The number of wavelengths per second
  • The time taken by the wave to move one wavelength
  • The maximum change in pressure from the equilibrium state (correct)

    • What is the unit of measurement for frequency?

  • Meters (m)
  • Meters per second (m·s⁻¹)
  • Seconds (s)
  • Hertz (Hz) (correct)

    • In a longitudinal wave, what is the direction of the particle displacement?

  • In a circular motion
  • Parallel to the direction of the wave's propagation (correct)
  • At an angle to the direction of the wave's propagation
  • Perpendicular to the direction of the wave's propagation

    • What is the relationship between period and frequency?

    <p>They are inversely proportional</p> Signup and view all the answers

    What occurs during a compression in a longitudinal wave?

    <p>The particles of the medium move closer together</p> Signup and view all the answers

    What is the definition of a rarefaction in a longitudinal wave?

    <p>A region where the particles of the medium are furthest apart</p> Signup and view all the answers

    What is wave speed?

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

    What is the wavelength of a longitudinal wave?

    <p>The distance between two consecutive points that are in phase</p> Signup and view all the answers

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

    <p>v = λ / T</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 represents one complete cycle of a longitudinal wave?

    <p>The wavelength of the wave</p> Signup and view all the answers

    What is the unit of measurement for wave speed?

    <p>Meters per second (m·s⁻¹)</p> Signup and view all the answers

    What is the amplitude of a longitudinal wave?

    <p>The maximum displacement from equilibrium</p> Signup and view all the answers

    What is the relationship between wavelength and frequency in the wave equation?

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

    What occurs during a rarefaction in a longitudinal wave?

    <p>The particles of the medium move further apart</p> Signup and view all the answers

    How do compressions and rarefactions travel through the medium in a longitudinal wave?

    <p>As alternating regions of high and low pressure</p> Signup and view all the answers

    What is the characteristic of particle displacement in a longitudinal wave?

    <p>Parallel to the direction of wave propagation</p> Signup and view all the answers

    What happens to the density and pressure of the medium during a compression?

    <p>They increase above average</p> Signup and view all the answers

    What is the wavelength in a longitudinal wave?

    <p>The distance between two consecutive points that are in phase</p> Signup and view all the answers

    What is the maximum displacement from equilibrium in a longitudinal wave?

    <p>The amplitude</p> Signup and view all the answers

    What is the visual representation of a longitudinal wave?

    <p>A slinky spring being pushed and pulled horizontally</p> Signup and view all the answers

    What is the characteristic of compressions and rarefactions in a longitudinal wave?

    <p>They are alternating regions of high and low pressure</p> Signup and view all the answers

    What is the relationship between the wavelength and the amplitude of a longitudinal wave?

    <p>They are independent of each other</p> Signup and view all the answers

    What is the significance of the wavelength in a longitudinal wave?

    <p>It represents one complete cycle of the wave</p> Signup and view all the answers

    What is the maximum change in pressure from the equilibrium state in a longitudinal wave?

    <p>The amplitude of the wave</p> Signup and view all the answers

    What is the time taken by the wave to move one wavelength?

    <p>The period of the wave</p> Signup and view all the answers

    What is the number of wavelengths per second in a wave?

    <p>The frequency of the wave</p> Signup and view all the answers

    What is the relationship between the period and frequency of a wave?

    <p>They are inversely proportional</p> Signup and view all the answers

    What is the distance a wave travels per unit time?

    <p>The wave speed</p> Signup and view all the answers

    What is the formula to calculate the wave speed in terms of frequency?

    <p>v = λf</p> Signup and view all the answers

    What is the unit of measurement for the wave speed?

    <p>Meters per second (m/s)</p> Signup and view all the answers

    What is the result of substituting the equation f = 1/T into the formula v = λ/T?

    <p>v = λf</p> Signup and view all the answers

    What happens to the density and pressure of the medium during a rarefaction in a longitudinal wave?

    <p>They decrease from the average.</p> Signup and view all the answers

    What is the characteristic of longitudinal waves that differentiates them from transverse waves?

    <p>Particle displacement is parallel to the direction of wave propagation.</p> Signup and view all the answers

    How do compressions and rarefactions travel through the medium in a longitudinal wave?

    <p>As alternating regions of high and low pressure.</p> Signup and view all the answers

    What represents one complete cycle of a longitudinal wave?

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

    What is the relationship between the wavelength and the amplitude of a longitudinal wave?

    <p>The wavelength and amplitude are independent of each other.</p> Signup and view all the answers

    What is the maximum displacement of particles from their equilibrium position in a longitudinal wave?

    <p>The amplitude.</p> Signup and view all the answers

    What is the visual representation of a longitudinal wave?

    <p>A coil-like structure.</p> Signup and view all the answers

    How do the particles of the medium move in a longitudinal wave?

    <p>Back and forth in the same direction as the wave.</p> Signup and view all the answers

    What is the amplitude of a longitudinal wave related to?

    <p>The maximum change in pressure from the equilibrium state</p> Signup and view all the answers

    What is the period of a wave?

    <p>The time taken by the wave to move one wavelength</p> Signup and view all the answers

    What is the frequency of a wave?

    <p>The number of wavelengths per second</p> Signup and view all the answers

    What is the relationship between the period and frequency of a wave?

    <p>Frequency is inversely proportional to period</p> Signup and view all the answers

    What is the formula to calculate the wave speed in terms of wavelength and frequency?

    <p>v = λf</p> Signup and view all the answers

    What is the unit of measurement for wave speed?

    <p>meters per second (m·s⁻¹)</p> Signup and view all the answers

    What is the result of substituting the equation f = 1/T into the formula v = λ/T?

    <p>v = λf</p> Signup and view all the answers

    What is the distance traveled by a wave during one period?

    <p>One wavelength</p> Signup and view all the answers

    What is the direction of the medium's displacement in a compression?

    <p>Parallel to the wave's propagation</p> Signup and view all the answers

    What is the significance of the amplitude in a longitudinal wave?

    <p>It represents the maximum displacement from equilibrium</p> Signup and view all the answers

    During a rarefaction, what happens to the density and pressure of the medium?

    <p>They decrease</p> Signup and view all the answers

    What is the characteristic of longitudinal waves that differentiates them from transverse waves?

    <p>The particles of the medium move parallel to the wave's propagation</p> Signup and view all the answers

    What is the wavelength in a longitudinal wave?

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

    What is the result of the particles of the medium moving back and forth in the same direction as the wave?

    <p>Compressions and rarefactions are formed</p> Signup and view all the answers

    What is the visual representation of a longitudinal wave?

    <p>A coil spring being pushed and pulled horizontally</p> Signup and view all the answers

    What is the relationship between the wavelength and the frequency of a longitudinal wave?

    <p>They are directly proportional</p> Signup and view all the answers

    What is the effect of increasing the frequency of a longitudinal wave on its amplitude?

    <p>The amplitude decreases</p> Signup and view all the answers

    If the wavelength of a longitudinal wave is tripled, what is the effect on its speed?

    <p>The speed is also tripled</p> Signup and view all the answers

    What is the effect of increasing the period of a longitudinal wave on its wavelength?

    <p>The wavelength decreases</p> Signup and view all the answers

    If the speed of a longitudinal wave is doubled, what is the effect on its frequency?

    <p>The frequency is also doubled</p> Signup and view all the answers

    What is the relationship between the amplitude and wavelength of a longitudinal wave?

    <p>The amplitude is independent of the wavelength</p> Signup and view all the answers

    If the wavelength of a longitudinal wave is halved, what is the effect on its period?

    <p>The period is also halved</p> Signup and view all the answers

    What is the effect of increasing the frequency of a longitudinal wave on its wavelength?

    <p>The wavelength decreases</p> Signup and view all the answers

    If the amplitude of a longitudinal wave is doubled, what is the effect on its speed?

    <p>The speed remains constant</p> Signup and view all the answers

    What is the distance traveled by a wave during one period?

    <p>One wavelength</p> Signup and view all the answers

    What is the significance of the amplitude in a longitudinal wave?

    <p>It represents the maximum change in pressure from the equilibrium state</p> Signup and view all the answers

    How do the particles of the medium move in a longitudinal wave?

    <p>They move parallel to the direction of the wave</p> Signup and view all the answers

    What is the result of substituting the equation f = 1/T into the formula v = λ/T?

    <p>v = λf</p> Signup and view all the answers

    What is the time taken by the wave to move one wavelength?

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

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