Compression
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Example:
Imagine you're in a crowded elevator where everyone is trying to squeeze in as the doors close. This situation is similar to the concept of compression in a wave, where particles are pushed closely together. Just like how people in the elevator are packed tightly into a confined space, in a compression of a wave, particles are bunched up, resulting in a region of high pressure within the wave.
Practice Version
Compression: Part of a wave where particles are pushed together. Compression. Compression is when particles in a material are squeezed closer together, like when you press down on a spring.