Question

In a sound wave, compression is a region of ______.

• A. high pressure and low density
• B. high pressure and high density
• C. low pressure and high density
• D. low pressure and low density

Answer 1

The correct option is B high pressure and high density

Sound is created by vibration of particles. When a particle is vibrating, it tries to push the particle next to it, making it a region of high pressure and high density. This portion of the medium is said to be in compression.