Question

What effects the amplitudes of sound waves?

Answer 1

In order to solve this question let me tell you that the number of molecules displaced by vibration creates the amplitudes of sound. So we will see what is the effect when the sound waves have less displaced molecules to the more displaced molecules and we will see the effect of the amplitude.

Complete answer:
For solving this question we will first study what is the amplitude:
Amplitude: So the amplitude is the maximum extent of a vibration or oscillation measured from the position of the equilibrium.Now we will analyze the amplitude of sound wave with the help diagram:

The number of molecules displaced by a vibration creates the amplitude of a sound. The strength or level of sound pressure. The number of molecules in the sound wave in b is greater than the number in the sound wave in a, therefore the amplitude of the sound wave in b is greater. So it is clear from the above discussion that if the number of displaced molecules are less so the amplitude will be less and if the number of molecules of vibration are more than the amplitude will be greater.

Note: While solving the above question we should keep in mind that we are studying about the sound wave if we will be studying about any other wave the amplitude may or may not vary the same as in sound wave.