6.3.3 Sound Waves

• Match the wave type with its properties:

  Mechanical waves ↔️ Requires a medium

  Electromagnetic waves ↔️ Travels through a vacuum
• What is the term for the maximum displacement of particles in a sound wave from their equilibrium position?

  Amplitude
• A higher frequency in a sound wave corresponds to a higher pitch.

  True
• The amplitude of a sound wave determines its loudness
• Steps in the production of a sound wave:

  1️⃣ Object vibrates

  2️⃣ Nearby particles move

  3️⃣ Kinetic energy is transferred

  4️⃣ Sound wave propagates outward
• Sound waves are characterized by their frequency, wavelength, amplitude, and speed
• In what units is the loudness of a sound wave measured?

  Decibels
• Wavelength is related to frequency and speed.

  True
• Match the sound wave characteristic with its unit:

  Frequency ↔️ Hertz (Hz)

  Wavelength ↔️ Meters (m)

  Amplitude ↔️ Decibels (dB)

  Speed ↔️ Meters per second (m/s)
• What determines the loudness of sound?

  Amplitude
• The loudness of sound is measured in decibels
• The speed of sound is constant across all mediums.

  False
• Arrange the mediums in order of increasing sound speed:

  1️⃣ Gases

  2️⃣ Liquids

  3️⃣ Solids
• Sound waves are created by the vibration and oscillation of particles
• Sound waves can travel through a vacuum.

  False
• What determines the pitch of a sound?

  Frequency
• What is the speed of electromagnetic waves in a vacuum?

  Constant (speed of light)
• Sound waves transfer energy through vibrational means, while electromagnetic waves use radiative energy
• Sound waves can travel through a vacuum.

  False
• Match the sound wave characteristic with its unit:

  Frequency ↔️ Hertz (Hz)

  Wavelength ↔️ Meters (m)

  Amplitude ↔️ Decibels (dB)
• What does the frequency of a sound wave determine?

  Pitch
• Sound waves are mechanical waves that require a physical medium to propagate.


  True
• What is an example of a mechanical wave?

  Sound
• What unit is used to measure the frequency of a sound wave?

  Hertz (Hz)
• The speed of sound waves is constant regardless of the medium.

  False
• Steps in the production of sound waves

  1️⃣ Object vibrates

  2️⃣ Nearby particles move

  3️⃣ Kinetic energy is transferred

  4️⃣ Chain reaction propagates

  5️⃣ Sound wave is created
• Why does sound travel faster through solids than liquids or gases?

  Particles are more tightly packed
• The speed of sound is constant for all mediums
• What property of sound waves determines pitch?

  Frequency
• Arrange the following mediums in order from fastest to slowest speed of sound:

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• Sound travels much faster through steel than air.
• Acoustic sensors can measure distance using sound waves.

  True
• Sound waves have applications in entertainment, security, and navigation
• What type of wave are sound waves classified as?

  Mechanical waves
• Sound waves can travel through a vacuum.

  False
• Sound waves are characterized by their frequency and wavelength
• What does the frequency of a sound wave determine?

  Pitch
• What is the distance between consecutive peaks of a sound wave called?

  Wavelength
• The speed of sound waves varies depending on the properties of the medium
• Do sound waves require a medium to travel through?

  Yes