Label a Longitudinal Wave

This longitudinal wave labeling worksheet gives every student a clear path to mastering the anatomy of a longitudinal (compressional) wave. A large diagram with accurately spaced coils shows real compressions and rarefactions, and four numbered arrows anchor all three differentiated versions so the whole class works from the same visual while each student gets the right level of support.

Three star-coded versions included:

• ★ Support — students match word bank terms (compression, rarefaction, wavelength, wave direction, medium motion) to the numbered arrows.
• ★★ Practice — students name each part from a function clue, with no word bank.
• ★★★ Independent — students name each part, then complete a set of word-bank statements that build the key idea that the medium moves parallel to the wave, using sound as the example.

The diagram measures wavelength compression-to-compression and draws the wave-direction and medium-motion arrows parallel to each other, targeting the misconception that particles move across the wave. A teacher overview page summarizes the levels, and compact answer keys are included for all three versions. Pairs perfectly with our transverse wave labeling worksheet.

Aligned to NGSS MS-PS4-1. Perfect for introducing mechanical waves, sound, differentiated stations, sub plans, or quick assessment in grades 6–8.