Wave

• Wave - periodic motion, source of any vibrating matter, traveling disturbance, carries energy, travels with our without medium
• Vibration - repeated motion. Produced by back and forth or up and down.
• Medium - a substance or material that carries the wave.
• Mechanical Wave - It requires a medium to propagate

  • Transverse - perpendicular movement (up and down)
  • Longitudinal - parallel movement. Types are compression, rarefaction
  • Surface wave - circular movement
• Parts of a wave

  A) Amplitude

  B) Crest

  C) Trough

  D) Wavelength

  
• Parts of a wave

  • Equilibrium Position - undisturbed position of the wave.
  • Crest - highest point
  • Trough - lowest Point
  • Wavelength - distance of crest
  • Amplitude - is the measure of the energy the wave carries.
• Wave Characteristics

  • Period - time it takes to complete cycle
  • Frequency - number of cycles made by wave, denoted by F and expressed in Hertz (Hz)
  • Wavelength - inversely proportional. denoted by lambda (λ).

  Long wavelength - low energy

  Short wavelength - high energy

  • Amplitude - denotes vibration and directly proportional, denoted by a.

  high amplitude - high energy

  low amplitude - low energy

  • Waves speed - related to frequency and wavelength, denotes speed.