Distinguish between loudness and intensity of sound.

Distinguish Between

	Loudness	Intensity of sound
1.	Loudness measures the ear's sensitivity to sound and can distinguish between loud and soft sounds.	The sound energy passing through a unit area in one second is called sound intensity.
2.	The loudness may vary for different observers. That is, it depends on the sensitivity of the ears.	It does not depend on the sensitivity of the ears.
3.	Its unit is decibel (dB).	Their unit is watt/meter or W/m².
4.	It has a subjective existence.	It has an objective existence.

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