Question

What do you understand by the term pitch in relation to sound waves?

Answer 1

Hint
Normally sound is produced due to the vibration of particles that produce sound waves. The waves have frequency. The high and low frequency determines the volume of the sound which is related to the pitch.

Complete step by step answer
In our daily life we come across different types of sounds. If we listen to a song we can easily recognise the sound pattern, tune and the loudness of that song. The loudness and pitch appear the same but they are different aspects of sound.
Loudness of a sound depends on the amplitude of the sound wave. It is the energy of the sound wave that always stays the same and does not change.
Pitch is defined by the human ear. It is the response of human ears to the frequency of sound. Pitch is the character of sound that is used to know the difference between the flat and high sound as high pitched and low pitched sound. The pitch depends on the frequency of the vibration of waves. If the frequency is high then it is known as high pitched sound. If the frequency is low then it is known as low pitched sound.
For example: the sound that produced by the birds produce is high pitched; it has a high sharp frequency whereas the sound produced by the frogs is flat and has low frequency.
A piano can clearly differentiate the levels of pitch; it has four sets of keys consisting of different pitches. The frequency of piano keys ranges from 27 Hz to 1400 Hz. Each key has a different frequency and different pitch.

Note
There is an interesting fact about sound that is a high pitched sound of frequency more than 20 KHz can kill you. This high pitched frequency gives enough pressure to your lungs to get exploded.