Physics Middle School

what characteristic of a wave is related to the intensity of loudness of a sound?

1. Amplitude
2. Frequency
3. Wavelength

Answers

Answer 1
The intensity of loudness of sound is affected by amplitude. Frequency and wavelength affect the pitch of a sound.
Answer 2

Th characteristic of a wave related to the intensity of loudness of a sound is amplitude. Amplitude is a measure of the intensity of waves.

What is amplitude of a wave ?

Amplitude of a transverse wave is the height to the crest or trough from the base line. Amplitude of a wave is directly proportional to its frequency. Amplitude is measure of intensity of the wave.

Sound waves are longitudinal waves. Longitudinal waves are composed of compressions and rarefactions. The amplitude of a sound wave is the distance between the particles in compressions.

Amplitude is a frequency depended factor. As the frequency increases, amplitude of the wave also increases, making the wave energetic and sound louder.   Hence, option 1 is correct.

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