Usually involves feeling of fear or insecurity. The loss of confidence in things that have always been stable or dependable in the past â this includes things such as a relationship, your personality structure, health, etc; so the breakdown of opinions, attitudes or relationships which seemed so dependable and you have taken for granted.
Crests and troughs. Waves have moving crests (or peaks) and troughs. A crest is the highest point the medium rises to and a trough is the lowest point the medium sinks to. Crests and troughs on a transverse wave are shown in Figure 1. A crest is a point on the wave where the displacement of the medium is at a maximum.
An ocean wave is initiated where wind and water interact. It then travels across the sea until it collapses on the shore. This is known as the cycle of the wave. Waves are classified by height, wavelength and wave period. The crest is the highest part of the wave, while the trough is the lowest part.