Waves
Mechanical Waves
a disturbance in matter that carries energy from one pool to another
created when a source of energy causes a vibration to travel through a medium
types of mechanical waves
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surface
Transverse
Properties of mechanical waves
electromagnetic waves
causes medium to vibrate at right angles in the direction of the wave
travels along a surface separating two media
frequency and period
wavelenght
wave speed
amplitude 
transverse waves consisting of changing electric waves and changing magnetic fields
difference between electromagnetic waves and mechanical waves
electromagnetic waves are produced by the vibration of charged particles
mechanical waves require a medium in order to transport the energy through locations
causes it to vibrate in a direction parallel to the direction in which the wave travels