Wave Crest

Example:

Imagine trying to balance a spoonful of soup while walking across a crowded room without spilling it. Just as the soup in the spoon reaches its highest point when you carefully lift it up to avoid obstacles, a wave crest represents the peak or highest point of a transverse wave. The soup balancing at its peak is like the wave crest, both representing the maximum point before gravity—or in the case of a wave, energy—pulls it down again.