1.3.3 Sound Waves

• What type of waves are sound waves?

  Longitudinal waves
• Match the property of sound waves with its description:

  Type ↔️ Longitudinal wave

  Medium ↔️ Requires a solid, liquid, or gas

  Propagation ↔️ Compression and rarefaction
• Order the processes involved in sound wave propagation:

  1️⃣ Vibrations create compression and rarefaction

  2️⃣ Compression and rarefaction propagate

  3️⃣ Energy is transferred without moving the medium
• Sound waves travel faster through gases than through liquids.

  False
• Order the factors affecting the speed of sound from fastest to slowest propagation:

  1️⃣ Solid

  2️⃣ Liquid

  3️⃣ Gas
• What type of waves are sound waves?

  Longitudinal waves
• In which medium does sound travel faster: water or steel?

  Steel
• Sound waves travel through a medium by compressing and expanding its particles
• Sound waves carry energy from one place to another without moving the medium
• What are the two processes involved in sound wave propagation called?

  Compression and rarefaction
• Which type of medium do sound waves travel fastest through?

  Solids
• Sound waves travel faster in warm air than in cold air.
• In sound waves, the compression is where particles are squeezed together
• Sound travels faster in warm air than in cold air.
• What happens to the speed of sound if the wavelength increases while the frequency remains constant?

  It increases
• Sound waves are produced by vibrations that create regions of compression and rarefaction
• Sound waves propagate through compression and rarefaction
• Sound waves require a medium such as air, water, or a solid
• What unit is frequency measured in?

  Hertz
• The speed of sound is directly related to its frequency and wavelength.
• In destructive interference, the amplitudes of the waves cancel each other out, resulting in a quieter or silent region
• Constructive interference results in a louder sound.
• Match the property with its correct concept:

  Resonance ↔️ Increased amplitude when driven at natural frequency

  Standing Waves ↔️ Stationary wave pattern formed by interference
• What is one everyday application of sound waves in communication?

  Speech
• Sound waves enable communication, exploration, and medical advancements.
• Sound waves transfer energy without moving the medium itself.
• Sound waves can travel through a vacuum.

  False
• Sound waves require a medium such as a solid, liquid, or gas to propagate.
• Sound waves are produced by vibrations that cause compression and rarefaction in a medium.
• What is the term for the region in a sound wave where particles are squeezed together?

  Compression
• Sound waves can travel through a vacuum.

  False
• Match the sound wave property with its definition and unit:

  Frequency ↔️ Number of cycles per second (Hz)

  Wavelength ↔️ Distance between crests (m)

  Amplitude ↔️ Maximum particle displacement (dB)
• Superposition of sound waves occurs when waves interact in the same medium.
• In transverse waves, particle motion is parallel to the direction of energy transfer.

  False
• Sound waves transfer energy without moving the medium itself.
• The density of a medium affects the speed of sound.
• Wavelength is measured in meters
• The formula relating speed, frequency, and wavelength is $v =$$f\lambda$, where $\lambda$ represents wavelength
• Superposition of sound waves occurs when two or more waves travel through the same medium
• What happens when two or more sound waves travel through the same medium and interact with each other?

  Superposition