What is the trough in a wave?

The trough in a wave refers to the lowest point of the wave. In the context of wave properties, it is important to understand that waves have specific characteristics such as crests and troughs. The crest is the highest point, while the trough represents a point where the wave's displacement is at its minimum, often seen as the bottom part of the wave cycle.

In various types of waves, such as sound waves, water waves, or seismic waves, recognizing the trough is crucial for understanding the wave's behavior, energy distribution, and interactions with other waves or materials. Identifying these key points helps in analyzing wave properties such as amplitude, wavelength, and frequency, which are fundamental in physics. The other choices describe other aspects of waves or unrelated features, emphasizing the importance of recognizing the specific definitions associated with wave terminology.