Which part of a wave is the highest point?

The highest point of a wave is referred to as the crest. In the context of wave terminology, the crest represents the maximum displacement of the wave from its rest position. This is the point where the energy of the wave reaches its peak before it starts to descend again.

Understanding the terms related to waves can help clarify why the crest is the correct answer. For example, the trough refers to the lowest point of the wave, which is the opposite of the crest. Amplitude describes the distance from the rest position to the crest or trough, indicating how much energy the wave carries. Wavelength measures the distance between successive crests or troughs, providing insight into the size and frequency of the wave.

In summary, the crest specifically denotes that highest point of the wave, making it the correct term for the highest position within a wave's cycle.