Conceptual Physics Chapter 26: Sound

The source of every sound is something that is

• moving.

• accelerating.

• vibrating.

• undergoing simple harmonic motion.

A sound source of high frequency emits a high

• amplitude.

• pitch.

• speed.

• all of these.

The range of human hearing is from about

• 10 hertz to 10,000 hertz.

• 20 hertz to 20,000 hertz.

• 40 hertz to 40,000 hertz.

• actually all of these, depending on the person.

A sound wave is a

• standing wave.

• longitudinal wave.

• transverse wave.

• shock wave.

Compressions and rarefactions are characteristic of

• transverse waves.

• longitudinal waves.

• both of these.

• neither of these.

Compressions and rarefactions normally travel in

• opposite directions in a wave.

• the same direction in a wave.

Sound travels faster in

• water.

• a vacuum.

• air.

• steel.

Sound waves cannot travel in

• air.

• steel.

• water.

• a vacuum.

The speed of a sound wave in air depends on

• its frequency.

• the air temperature.

• its wavelength.

• all of these.

Sound travels faster in air if the air is

• cold.

• warm.

• neither warm nor cold.