Properties of Sound

Front

What happens to the pitch of a sound wave if its wavelength is decreased?

Back

The pitch of the sound wave increases.

Front

As the wavelength of sound increases, what happens to the frequency?

Back

The frequency decreases.

Front

What is the unit used to measure the loudness of sounds?

Back

The unit for measuring loudness is the decibel.

Front

How do air molecules vibrate in a sound wave?

Back

Air molecules vibrate in the same path as the wave.

Front

In a longitudinal wave, which numbers represent rarefaction?

Back

The numbers labeled as rarefaction are 1 and 3.

Front

What is the relationship between frequency and wavelength in sound waves?

Back

Frequency and wavelength are inversely related; as one increases, the other decreases.

Front

What is the speed of sound in air at room temperature?

Back

The speed of sound in air at room temperature is approximately 343 meters per second.

Front

What is the difference between pitch and loudness?

Back

Pitch refers to the frequency of a sound, while loudness refers to the amplitude of the sound wave.

Front

What is a compression in a longitudinal wave?

Back

A compression is a region in a longitudinal wave where the particles are closest together.

Front

What is a rarefaction in a longitudinal wave?

Back

A rarefaction is a region in a longitudinal wave where the particles are furthest apart.