Step-by-step explanation:
A wave is a disturbance that carries energy from one place to another through matter and space.
When we through a stone or a pebble in calm water, then the particles of water moves up and down and this process continues for some time. This implies that there is a disturbance produced in water.
The wave can be described using second-order linear partial differential equation. It is termed as wave equation.
There are many types of waves like the transverse wave and the longitudinal waves.