Question

define loudness

Explain how loudness and amplitude are related

Answer 1

The loudness of a sound is linked to the size of the vibration which produces it. A big vibration makes a louder sound.

Loudness and amplitude. The loudness of a sound is linked to the size of the vibration which produces it. A big vibration makes a louder sound. Scientists use the word 'amplitude' for the size of waves. ... Amplitude measures the height of the waves - loud sound waves have a large amplitude.

Answer 2

$\bold{LOUDNESS}$

Loudness is the characteristic property of sound that help us to distinguish between two sounds of same pitch and quality.

Loudness depends on the amplitude of the wave.

$\bold{INTENSITY}$

Intensity is the amount of energy passing per second through per unit area.

Intensity depends on the square of amplitude.

Loudness depends on the intensity.

So, loudness is directly proportional to the square of amplitude.

It states that the more will be the amplitude the great amount of energy will be released by ear drums therefore, louder will be the sound.

$\huge \boxed{l \propto a^{2}}$

Where l is the loudness and a is amplitude.