Equilibrium- The Equilibrium is the position of a medium that is natural, there is no force going into a medium in it's Equilibrium position. The Equilibrium is a naturally assumed position.Period- The time (seconds) it takes for one complete cycle (wavelength) to be completed. This applies to all Mechanical Waves.Frequency- This stands for the amount of cycles that pass in one second, the symbol for frequency is f, and the unit for it is hertz.Crest- The Crest is the highest point of a transverse wave in one complete period.Trough- The Trough is the lowest point of a transverse wave in one complete period.Amplitude- Is the Measurement of the distance between the Equilibrium and the Crest/Trough, only Applies to Transverse waves.

A diagram displaying the properties of a Transverse Wave

A diagram displaying many of the properties of a transverse wave.


Rarefaction- Rarefaction is part of a Longitudinal wave. The Rarefaction is the part of the wave when the pressure is low, and particles are furthest apart
Compression- Compression is part of a Longitudinal Wave. The Compression is the part of the Wave when the pressure is high, and the particles are packed tightly together.

external image longitudinal.png

A diagram displaying the difference between a rarefaction and compression.

The Equation for Waves
The equation for waves is Wave speed/Velocity= Freq. x I. These are all linked, if one changes, they all change. This equation is similar to the equation for speed. The wave equation can be used to discover the Velocity, Frequency or Wavelength (I) The wave equation can be applied to everyday life, for example, finding out the speed or size of a tsunami.

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The Relationship Between Waves and Energy
Waves are a medium to transfer energy from one place to another. Waves send sound waves from the vocal cords to the pinna of another persons eardrum for example. Waves influence other energy, for example, To read more about this, go to The Eye and Ear.

To see how some of this relates to real life, go to Real World Example Video!!!!!!!
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