Nature of waves

• What type of wave is this?

  Transverse wave.

  
• What type of wave is this?

  Longitudinal wave

  
• What do each of the numbers represent in the image below?

  1= amplitude

  2= resting position or equilibrium

  3= wavelength

  4= crest or peak

  
• What do each of the numbers represent in the image below?

  1= compressions

  2=rarefractions

  3= wavelength

  
• In transverse waves, the oscillations are perpendicular to the direction of energy transfer.
• In longitudinal waves, the particles vibrate parallel to the direction of the wave and energy transfer.
• What are some examples of a transverse wave?

  Light, water waves
• What are some examples of longitudinal waves?

  Sound waves, seismic waves
• Mechanical waves are vibrations that need a medium to travel through. They can be longitudinal or transverse waves and cannot travel through a vacuum.
• Frequency is the number of complete waves passing a point in a second, measured in Hertz.
• A period is time taken for a wave to pass a fixed point, measured in seconds.
• Period (T) = 1 / frequency
• Wavespeed= frequency x wavelength (m/s)