A wave is a means of transferring energy from one point to another without the transfer of particles.
Waves can come in two forms, they can either be vibrating perpendicular to the direction in which the energy is flowing(transverse waves), or they can move parallel to the direction of energy flow(longitudinal waves).
Waves can come in two forms, they can either be vibrating perpendicular to the direction in which the energy is flowing(transverse waves), or they can move parallel to the direction of energy flow(longitudinal waves).