What is a wave? - Graphical representation of the movement of energy
Where the direction of energy and movement of particles are perpendicular

Where the direction of energy and movement of particles are parallel


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