What is a wave? - Graphical representation of the movement of energy

Transverse waves

Where the direction of energy and movement of particles are perpendicular

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Longitudinal waves

Where the direction of energy and movement of particles are parallel

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Features of a wave

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Amplitude - Maximum displacement from equilibrium position

Wavelength - Distance any point in a wave and the equivalent point on the next

Frequency - Number of waves passing any point per second [Hz]

Period - The time for one oscillation

Wave Equation -

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Wave speed = Distance travelled by a wave each second [m]