Question

………………………………… .. are the series of compressions and rarefactions. ……………………………………………………. are produced when a loudspeaker squashed the air in front of it while …………… .. ………………… is when the loudspeaker stretches the air and molecules are spread out. The distance between two compressions and rarefactions is ……………………………………
plz in English

Answer 1

$\huge\underbrace\mathcal\orange{ᴀɴꜱᴡᴇʀ}$

Longitudinal Wave. Longitudinal waves are a series of compressions and rarefactions (expansions).

Waves are made up of compressions and rarefactions.