• Definination :- A sound of unpleasant and annoying nature.

• Sources of noise pollution

1. Industrial Activities
2. Transport Activities
3. Domestic Activities
4. Cultural Activities
5. Mining Activities

• The Unit of measurement of sound is called as decibel (dB).

• Effect of noise pollution

The noise pollution creates temporary as well as permanent problems to the human beings. The noise pollution can have physical, physiological and psychological effects.

A. Physical effect i. Temporary hearing problem. ii. Permanent deafness

B. Physiological Effects i. Headache ii. Reduction in the vision iii. Rise in blood pressure iv. Loss of memory

C. Psychological effects i. Depression ii. Fatigue iii. Frustration iv. Irritation