Longitudinal & Transverse Waves

• What are the two main types of waves discussed in the video?

  Transverse and longitudinal waves
• What is the primary function of waves?

  Waves transfer energy from one place to another without transferring matter
• How does our brain interpret the energy transferred by waves?

  Our brain builds images and tunes from the light and sounds it receives
• What do we call the maximum displacement of a wave?

  Amplitude
• What is the term for the distance of one entire oscillation of a wave?

  Wavelength
• What is the opposite of the crest in a wave called?

  Trough
• What does a displacement-time graph represent?

  A displacement-time graph shows how displacement varies with time
• What is the time period of a wave?

  The time period is the time it takes for one complete oscillation
• If the time period of a wave is 0.5 seconds, what is its frequency?

  2 Hz
• How do you calculate frequency from the time period?

  Frequency = 1 / Time period
• If a wave has a frequency of 4 Hz, what is its time period?

  0.25 seconds
• How do you calculate wave speed?

  Wave speed = Wavelength × Frequency
• What is the wave speed of a sound wave with a frequency of 400 Hz and a wavelength of 70 cm?

  280 m/s
• What is the unit of frequency?

  Hertz (Hz)
• In transverse waves, how are the oscillations oriented in relation to the direction of energy transfer?

  The oscillations are perpendicular to the direction of energy transfer
• What are some examples of transverse waves?

  Light waves, radio waves, ripples in water, and waves on strings
• How are oscillations oriented in longitudinal waves?

  The oscillations are parallel to the direction of energy transfer
• What are some examples of longitudinal waves?

  Sound waves and seismic P waves
• What are the key differences between transverse and longitudinal waves?

  • Transverse waves: oscillations are perpendicular to energy transfer
  • Examples: light waves, radio waves, water waves
  • Longitudinal waves: oscillations are parallel to energy transfer
  • Examples: sound waves, seismic P waves
• What are the key terms related to wave properties?

  • Amplitude: maximum displacement from equilibrium
  • Wavelength: distance of one complete oscillation
  • Crest: highest point of a wave
  • Trough: lowest point of a wave
  • Time period: time for one complete oscillation
  • Frequency: number of complete oscillations per second (measured in Hertz)
  • Wave speed: distance traveled per second (calculated as Wavelength × Frequency)