A wave’s amplitude is the distance measured from the rest position to the crest’s top or the trough’s bottom. On a wave diagram, the rest position is the central line. The wave’s crest is at its highest point while the trough is the lowest point.
The measurement of a wave’s amplitude is an indication of its energy. For example, it requires more energy to produce a bigger amplitude wave. The measurement for the amplitude distance is in meters.
Other important parts of a wave are the wavelength and frequency. The wavelength is the distance in meters measured from one wave’s point to the same point on the subsequent wave. Frequency denotes the number of waves passing a particular point over a given time interval.