Here's a breakdown:

* Rest position: This is the point where the wave would be if it wasn't moving.

* Displacement: This is how far a point on the wave is moved from its rest position.

* Maximum displacement: This is the furthest distance a point on the wave travels from its rest position.

Visualizing Amplitude:

Imagine a wave on a string. The amplitude is the highest point the string reaches above its normal, relaxed position. Similarly, for a sound wave, the amplitude is the maximum change in air pressure from normal atmospheric pressure.

Amplitude and Energy:

The amplitude of a wave is directly related to its energy. A wave with a larger amplitude carries more energy than a wave with a smaller amplitude.

Examples:

* Sound waves: A louder sound has a larger amplitude.

* Light waves: Brighter light has a larger amplitude.

* Water waves: A larger wave (taller crest) has a larger amplitude.

Let me know if you'd like to explore how amplitude relates to other wave properties like frequency and wavelength!