Pulse Wave – is a single wave cause by an event or disturbance that sends energy sent through the medium. They also don’t repeat like a periodic wave.
Periodic Wave – waves caused by repeated events sent constantly in set seconds. If the energy entering the medium stays the same, then the wavelength, height and frequency remains the same each wave.
Longitudinal Wave – the slinky is either pulled or compressed which releases energy going through the slinky in same direction.
Transverse Wave – is a wave create when the medium is pulled side ways, causing the energy to be sent at a right angle of the direction its going. In the video it shows the slinky being pulled up and as it is swayed down, it would send energy right up then back down, continuing through the slinky.