a sound wave travels through air. in which regions are air molecules the least dense?\ncompressions\nfrequenc…

a sound wave travels through air. in which regions are air molecules the least dense?\ncompressions\nfrequencies\npitches\nrarefactions

a sound wave travels through air. in which regions are air molecules the least dense?\ncompressions\nfrequencies\npitches\nrarefactions

Answer

Brief Explanations:

Sound waves in air have compressions (where molecules are dense) and rarefactions (where molecules are less dense). Frequencies and pitches are properties related to the wave's oscillation rate, not density.

Answer:

D. rarefactions