Class-5 Science -The Power of Sound
The Power of Sound 1. Answer the following. a. What is sound? Ans- Sound is a form of energy which is produced as a result of vibration. b. What are warning sounds? Ans- The sounds that are used to alert people of an emergency or danger are called as warning sound. Example- Police siren, siren of fire engine 2. What does the following sound help for? a. Fire alarm It warns people to exit the building on time in case of fire. b. Ambulance siren It alerts people to give way to the vehicle on the road so that it reaches the patient or transfers the patient to the hospital. 3. Give reasons for the following. a. Loud speakers should be avoided at night. Ans- Loud speakers should be avoided at night because the loud sound causes hampered sleep, irritation, stress etc. among people. b. Industries should be built away from the residential areas. Ans- Prolonged exposure to the noise from industries causes ma...