Question

A student uses a spring toy to model a sound wave. The areas where the coils of the spring are spread out are called .
A. Rarefactions
B. Troughs
C. Crests
D. Compressions

Answer 1

The areas where the coils of the spring are spread out are called **A. Rarefactions**. In a sound wave, rarefactions refer to the regions where the particles are less densely packed, analogous to the spread-out coils in a spring model.