Science exam Apr 2024

• Mechanical wave


  A form of sound, requires a medium to propagate
• Vibrations of particles when sound waves traveling
• Compression region


  High pressure area
• Rarefaction


  Spread apart
• Acoustics


  Field of science
• Pitch


  Highness or lowness of tone
• Decibel scale


  Measure of sound
• Tone quality / timbre


  Combination of different frequencies
• Mediums for sound waves

  • Solid
  • Liquid
  • Gas
• Infrasonic


  Below 20Hz
• Ultrasonic


  Above 20,000Hz
• Major parts of the ear

  • Outer ear
  • Middle ear
  • Inner ear
• Mechanical wave


  A form of sound that requires a medium to propagate
• Sound waves


  • Involve longitudinal vibrations of particles as they travel
• Compression region


  High pressure area
• Rarefaction


  Spread apart
• Acoustics


  Field of science
• Pitch


  Highness or lowness of tone
• Decibel scale


  Measure of sound
• Tone quality / timbre


  Combination of different frequencies
• Mediums for sound waves

  • Liquid
  • Gas
  • Solid
• Receiver


  The medium that the wave travels through
• Liquid


  Loosely packed
• Infrasonic


  Below 20 Hz
• Ultrasonic


  Above 20,000 Hz
• Major parts of the ear

  • Outer ear
  • Middle ear
  • Inner ear