Waves

Waves

1. What is a wave?

   • A wave is a disturbance that transfers energy from one place to another without transferring matter

2. Types of waves

   • Mechanical waves
     • Transverse waves
       • A wave in which particles of a medium vibrate at right angles or perpendicular to the direction in wich the wave travels.
     • S-waves
       • They occur during earthquakes
       • The disturbance that causes an earthquake sends transverse waves throughout underground rocks in all directions away from the disturbance.
     • Longitudinal wave
       • Particles of the medium vibrate in a direction that is parallel to the directions that the waves travel
     • P-waves
       • Earthquakes causes longitudinal waves called P-waves
     • Surface waves
       • A wave that travels along the surface of a medium
       • Combination of transverse waves and longitudinal waves

3. Properties

   • Amplitude
     • The waves height; as it increases, volume does to
     • Distance the particles of the medium move from resting position.
   • Wavelength
     • The spatial period; or space of the wave, the distance over which the waves shape repeats
     • Distance between two crests or adjacent waves.
   • Crest
     • They are twice waves amplitude
   • Trough
   • Frequency
     • The number of waves that pass a fixed point in a given amount of time is the wave frequency

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