6.1.2 Properties of Waves

• In transverse waves, the vibration direction is perpendicular
• Longitudinal waves have vibrations perpendicular to the direction of travel.

  False
• The wavelength of a wave is the distance between two consecutive peaks
• What is the amplitude of a wave?

  Maximum displacement
• Wavelength and frequency are inversely related if the wave speed remains constant
• Match the wave type with its property:

  Transverse ↔️ Perpendicular vibration

  Longitudinal ↔️ Parallel vibration
• The speed at which a wave propagates through a medium is called the wave speed
• What is the wave speed of a wave with a wavelength of 2 meters and a frequency of 5 Hz?

  10 m/s
• How are wavelength and frequency related if wave speed remains constant?

  Inversely related
• When waves move from one medium to another, their direction can change due to refraction
• In constructive interference, the phase difference between waves is 0°
• What happens to sound volume when two identical sound waves arrive in phase?

  Doubles in loudness
• Under what conditions is diffraction most noticeable?

  Opening size ≈ wavelength
• Match the wave property with its description:

  Diffraction ↔️ Bending around obstacles

  Refraction ↔️ Change in direction due to speed change
• In transverse waves, vibrations are perpendicular to the direction of travel.
• What is the vibration direction in longitudinal waves?

  Parallel
• Transverse waves vibrate parallel to the direction of travel.

  False
• What is the vibration direction in transverse waves?

  Perpendicular
• Arrange the properties of a wave in order of their definitions:

  1️⃣ Wavelength: Distance between consecutive peaks or troughs

  2️⃣ Frequency: Number of cycles per unit time

  3️⃣ Amplitude: Maximum displacement from equilibrium

  4️⃣ Wave speed: Rate at which wave propagates
• What is the formula relating wave speed, wavelength, and frequency?

  v = \lambda \times f</latex>
• Wavelength and frequency are inversely related when wave speed is constant
• When waves move between media, their frequency remains constant.
• Destructive interference occurs when waves are in phase.

  False
• What causes refraction of a wave?

  Change in wave speed
• The distance between two consecutive nodes in a standing wave is half a wavelength
• What is a wave?

  A disturbance transporting energy
• Match the type of wave with an example:

  Transverse ↔️ Light

  Longitudinal ↔️ Sound
• What is the vibration direction in longitudinal waves?

  Parallel to travel
• Frequency is measured in Hertz (Hz).


  True
• What is the equation for wave speed?

  $wave\ speed =$$wavelength \times frequency$
• Longitudinal waves can travel through a vacuum.

  False
• The number of wave cycles that pass a given point per unit of time is called the frequency
• The amplitude of a wave is measured in meters.


  True
• What is the relationship between wave speed, wavelength, and frequency?

  $wave\ speed =$$wavelength \times frequency$
• The wavelength of a wave is the distance between two consecutive peaks
• If the frequency of a wave doubles and the wave speed remains constant, the wavelength is halved.


  True
• What is superposition in waves?

  Combining individual displacements
• Destructive interference occurs when a crest meets a trough of another wave.


  True
• The bending of waves around obstacles is called diffraction
• Refraction occurs when light passes through a narrow slit.

  False