Write the answers in your own words. (a) What is meant by vibration ? (b) Explain with the help of practical examples how sound is propagated through solids. (c) What is meant by noise pollution? (d) What measures will you take to control noise pollution?
Answers
Answer:
Ans1- Vibration, periodic back-and-forth motion of the particles of an elastic body or medium, commonly resulting when almost any physical system is displaced from its equilibrium condition and allowed to respond to the forces that tend to restore equilibrium.
Ans2- We will hear the Sound of tapping through wooden bench. This means sound can travel through wood which is solid.
Ans3- Noise pollution can be defined as any disturbing or unwanted noise that interferes or harms humans or wildlife. Noise pollution has a negative impact on wildlife species.
Ans4-We can Reduce Noise pollution by turning off appliances when not in use, use of earplugs, lowering the volume, planting more trees, regular maintenance of vehicles and machines etc. By controlling noise we can control negative health effects that noise pollution has on everyone.
Explanation:
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Answer:
A)
Vibration, periodic back-and-forth motion of the particles of an elastic body or medium, commonly resulting when almost any physical system is displaced from its equilibrium condition and allowed to respond to the forces that tend to restore equilibrium.
B)
We will hear the Sound of tapping through wooden bench. This means sound can travel through wood which is solid. 2 Let us take a meter scale made up of metal hold one end close to your ear and ask your friend to scratch other end. We can hear a loud sound.
C)
Noise pollution can be defined as any disturbing or unwanted noise that interferes or harms humans or wildlife. ... Noise pollution has a negative impact on wildlife species by reducing habitat quality, increasing stress levels, and masking other sounds.
D)
We can Reduce Noise pollution by turning off appliances when not in use, use of earplugs, lowering the volume, planting more trees, regular maintenance of vehicles and machines etc. By controlling noise we can control negative health effects that noise pollution has on everyone.
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