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Effects of Sound Waves | Physics for GCSE/IGCSE - Year 11 PDF Download

Pitch & Loudness

  • The pitch of a sound is determined by its frequency. Sounds with a high pitch correspond to a high frequency (short wavelength), while sounds with a low pitch correspond to a low frequency (long wavelength).
  • The volume of a sound is influenced by the amplitude of its wave. Sounds with a large amplitude result in a high volume, while sounds with a small amplitude lead to a low volume.

Effects of Sound Waves | Physics for GCSE/IGCSE - Year 11

Echoes

  • Sound waves bounce off solid surfaces, a phenomenon known as reflection, creating what is termed an echo.
  • Echo sounding finds application in measuring depth or identifying underwater objects.
  • A sound wave is emitted from the water's surface, subsequently reflecting off the ocean floor.
  • The time elapsed until the wave returns aids in determining the water's depth.
  • The distance traveled by the wave equals twice the ocean's depth, encompassing both the distance to the ocean floor and the return journey.

Effects of Sound Waves | Physics for GCSE/IGCSE - Year 11

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FAQs on Effects of Sound Waves - Physics for GCSE/IGCSE - Year 11

1. What is the difference between pitch and loudness in sound waves?
Ans. Pitch refers to how high or low a sound is perceived, while loudness relates to the intensity or volume of the sound.
2. How do echoes affect our perception of sound waves?
Ans. Echoes are the reflection of sound waves off surfaces, which can impact the clarity and timing of the original sound.
3. How do sound waves travel through different mediums?
Ans. Sound waves travel faster through solids than liquids or gases due to the molecules being closer together in solids.
4. Can the frequency of a sound wave affect its pitch?
Ans. Yes, the frequency of a sound wave directly influences the pitch we perceive, with higher frequencies corresponding to higher pitches.
5. How does the amplitude of a sound wave relate to its loudness?
Ans. The amplitude of a sound wave determines its loudness, with greater amplitudes resulting in louder sounds.
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