6.1.2 Properties of Waves

• Wavelength is typically represented by the Greek letter lambda
• A higher frequency means more cycles per second and higher energy.


  True
• What is the equation relating wave speed, wavelength, and frequency?

  $v =$$\lambda f$
• What does a frequency of 440 Hz indicate for a sound wave?

  440 cycles per second
• What are the units for wavelength and frequency in the equation $v =$$\lambda f$?


  Meters and Hertz
• In sound waves, higher amplitude corresponds to louder sound.


  True
• Understanding phase is important for analyzing wave interference.


  True
• Frequency is the number of complete cycles of a wave that pass a specific point in one second
• What is the symbol for the speed of a wave?

  v
• What is the formula relating wave speed, wavelength, and frequency?

  $v =$$\lambda f$
• A wave with a longer wavelength and lower frequency travels at a slower speed compared to a wave with a shorter wavelength and higher frequency.


  True
• Order the wave properties from most to least influence on wave speed:

  1️⃣ Wavelength

  2️⃣ Frequency
• The higher the wavelength and frequency, the faster the wave will travel
• In a sound wave, a higher amplitude corresponds to a louder sound.


  True
• Waves with a phase difference of 180° are out of phase
• Which type of wave is an example of a transverse wave?

  Light waves
• In transverse waves, particles move parallel to the wave direction.

  False
• The lowest points of a transverse wave are called troughs
• What type of waves are sound waves?

  Longitudinal
• Match the property of a longitudinal wave with its description:

  Particle Motion ↔️ Parallel to the wave direction

  Compressions ↔️ Areas where particles are close together

  Rarefactions ↔️ Areas where particles are spread apart
• In transverse waves, particles move perpendicular to the wave direction.
• Arrange the following properties of waves according to their appearance in transverse and longitudinal waves:

  1️⃣ Crests and Troughs

  2️⃣ Compressions and Rarefactions
• What Greek letter is used to represent wavelength?

  Lambda (λ)
• The speed of a wave is measured in meters per second (m/s).


  True
• If a wave has a wavelength of 2 meters and a frequency of 3 Hz, its speed is 6 m/s.
• What is the relationship between wavelength and wave speed if frequency is constant?

  Directly proportional
• Amplitude is measured in meters or centimeters.
• Understanding phase is important for analyzing wave interference.

  True
• Why is understanding phase important?

  Analyzing interference and superposition
• Two waves with a phase difference of 180° result in destructive interference.

  True
• How do the particles of the medium move in a transverse wave?

  Perpendicular to wave direction
• Sound waves are an example of longitudinal waves.


  True
• In transverse waves, particle motion is perpendicular to the wave direction, while in longitudinal waves, it is parallel.
• Which type of wave is light?

  Transverse wave
• Sound waves travel through air by compressing and rarefying molecules.


  True
• What is wavelength defined as?

  Distance between wave peaks
• What unit is frequency measured in?

  Hertz
• The speed of a wave is measured in meters per second
• Arrange the following waves in order of increasing speed, assuming their frequencies are the same:

  1️⃣ Wave with a shorter wavelength

  2️⃣ Wave with a longer wavelength
• What is the formula for frequency in terms of speed and wavelength?

  $f =$$\frac{v}{\lambda}$