science

• vibration - a repeated motion and produced by back and forth or up and down movement of an object.
• Wave - a traveling disturbance that carries energy from one place to another with or without a medium.
• Medium - a substance that carries the wave.
• what are the two types of waves?

  mechanical and electromagnetic
• Wave - according to presence of absence of a medium
• mechanical wave - it requires a medium to propagate
• electromagnetic wave - it does not require a wave to propagate
• Three types of wave?

  transverse, longitudinal and surface wave
• transverse wave - a wave in which particles of the medium move in a direction perpendicular to the direction where the wave moves.
• longitudinal wave - a wave in which particles of the medium move in a direction parallel to the direction where the wave moves
• surface wave - a wave in which particle of the motion medium undergo a circular motion
• frequency - is the number of waves passing through a given point in one second
• period - is the time taken to generate one complete wave