Science 7 (waves as carrier of energy)

• Wave


  A disturbance or a vibration that transfers energy through matter or space
• Vibration


  Produced whenever an object or a particle moves back and forth
• Types of waves


  • Transverse
  • Longitudinal
• Transverse wave


  A type of wave where the motion of the particles in the medium is perpendicular
• Wave pulse


  A single disturbance that travels along the medium
• Crest


  Highest point in a transverse wave
• Trough


  Lowest point in a transverse wave
• Amplitude


  Maximum distance between the equilibrium position
• Wavelength


  Distance between any successive identical parts of a wave
• Longitudinal wave


  A wave where the motion of the particles in a medium is parallel
• Mechanical wave


  A disturbance that requires a medium to transfer energy from one place to another
• Electromagnetic wave


  Do not need any medium to propagate