Waves

• Speed of sound in the air 


  330m/s
• Diagram of a transverse wave

  
• transverse waves example

  • ripples on the surface of water
  • vibrations in a guitar string
  • a Mexican wave in a sports stadium
  • electromagnetic waves - eg light waves, microwaves, radio waves
  • seismic S-waves
• what are transverse waves?

  In transverse waves, particles oscillate perpendicular to the direction of energy
• what are longitudinal waves?

  In longitudinal waves, particles oscillate parallel to the direction of energy
• Examples of longitudinal waves include:

  • sound waves
  • ultrasound waves
  • seismic P-waves
• frequency (Hz): number of complete oscillations per second
• how does transverse waves link with the electromagnetic spectrum?

  all waves in the electromagnetic spectrum are transverse waves
• what is the wavelength?


   the distance between a point on one wave and the same point on the next wave. 
• what is the wave direction?

  direction the energy travels in a wave
• what is the diffrence between peak and crest

  nothing, they both mean the top of the wave
• what is the trough?

  bottom of the wave
• what is the amplitude?

  the maximum displacement of a point of a wave from its rest position.
• diagram of a longitudinal wave....

  
• what is the difference in oscillations between longitudinal and transverse waves?

  Both the transverse and longitudinal waves have different directions of oscillations. Transverse waves will have oscillations perpendicular to the direction of travel. Longitudinal waves will have oscillations parallel to the direction of travel,