4.1 Properties of Waves

• Transverse waves have disturbances that are perpendicular to the direction of wave propagation.

  True
• Match the property with the correct wave type:

  Disturbance direction is perpendicular ↔️ Transverse waves

  Disturbance direction is parallel ↔️ Longitudinal waves
• Describe the process of wave motion and particle oscillation.

  1️⃣ Waves propagate through a medium

  2️⃣ Particles in the medium oscillate

  3️⃣ Energy is transferred without matter
• Waves transfer energy without transferring matter.


  True
• The key difference between transverse and longitudinal waves is the direction of particle oscillation
• What is the unit of frequency?

  Hertz
• The wave speed formula is $v =$$f \lambda$.


  True
• Wave speed is denoted by the symbol v
• Wavelength (λ) can be calculated using the formula $\lambda =$$v / f$


  True
• The wave speed is equal to the product of the wave's frequency and its wavelength
• Waves transfer energy without transferring matter
• What type of wave has disturbances parallel to the direction of wave propagation?

  Longitudinal wave
• Waves transfer energy without transferring matter.matter
• What is an example of a longitudinal wave?

  Sound wave
• Particles in a transverse wave oscillate parallel to the direction of wave propagation.

  False
• In a transverse wave, particle oscillation is perpendicular
• What is an example of a transverse wave?

  Water wave
• In a longitudinal wave, particles oscillate parallel to the direction of wave propagation.


  True
• Wavelength is the distance between two consecutive crests or troughs
• What is the formula to calculate frequency if you know wave speed and wavelength?

  $f =$$v / \lambda$
• The wave speed (v) can be calculated using the formula v = f λ
• What is the term for the speed at which a wave propagates through a medium?

  Wave speed
• Match the wave type with its description:

  Transverse wave ↔️ Disturbance is perpendicular to wave propagation

  Longitudinal wave ↔️ Disturbance is parallel to wave propagation
• Water waves are an example of transverse waves.


  True
• Wave motion involves the transfer of energy through a medium without transporting matter
• Match the wave type with its particle oscillation direction:

  Transverse wave ↔️ Perpendicular to wave propagation

  Longitudinal wave ↔️ Parallel to wave propagation
• The distance between two consecutive crests or troughs in a wave is called the wavelength
• The wave speed (v) can be calculated using the formula v = f λ
• A wave with a wavelength of 2 meters and a frequency of 3 Hz has a wave speed of 6 m/s.

  True
• Reflection occurs when a wave encounters a boundary and bounces back
• In reflection, the angle of incidence is equal to the angle of reflection.


  True
• What is the definition of reflection in wave phenomena?

  Bouncing back of waves
• In reflection, the angle of reflection is equal to the angle of incidence
• The angle of refraction is always equal to the angle of incidence.

  False
• What is the maximum displacement from the equilibrium position in a wave called?

  Amplitude
• The wave speed (v) is related to frequency (f) and wavelength (λ) by the formula $v =$$f \lambda$.


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

  $v =$$f \lambda$
• What happens when two waves in phase overlap?

  Constructive interference
• What happens to the amplitude of a wave when two in-phase disturbances combine?

  Larger amplitude
• Waves bend when they pass from one medium to another due to a change in speed