10 NOISE: HOW IT AFFECTS OUR LIVES || NIOS - SECONDARY COURSE || ENGLISH-202 CLASS-X

CHAPTER - 10 NOISE: HOW IT AFFECTS OUR LIVES


 INTEXT QUESTIONS 10.1 

I. Answer the following questions: 

1. What is the difference between ‘sound’ and ‘noise’?

 Ans:The minimum sound of 50 db which we can listen pleasantly is called sound. The sound which is above 95 db and also which causes irritation to listen is called noise pollution.

2. List out three examples each of sound and noise.

Ans:Birds chirping, soft music, soft laughter, etc. for sound and tyres screeching, music from loud speakers, crackers etc as examples of noise. 

3. What is the unit of measuring sound called? 

Ans:The unit of measuring sound is called decibel.

4. Up to what level is sound tolerable to the human ear? 

Ans:Up to 75 decibels is sound tolerable to the human ear.

5. What are the sounds that you find intolerable and why?

Ans:Sounds of quarrelling, chalk against the black board, car horns because they are annoying, they cause headaches, they hurt my ears, they are loud.

II. Say whether the following statements are true or false. 

a. Every sound is noise to human ears. F 

b. The sound made by a fire engine is noise. T 

c. Noise can be injurious to health. T 

d. Noise does not pollute the environment. F   

e. Noise below 145 decibels is safe for every human being. F

III. Fill in the blanks in the following sentences: 

a. The sound made during normal conversation measures 45-75 decibels decibels. 

b. Beyond 140 decibels, noise can be painful to the ears. 

c. The screech of a car tyre is very unpleasant/jarring to the ears. 

d. The method of measuring sound is scientific . 

e. In order to protect ourselves against hearing loss/deafness it is necessary to keep a check on noise.

INTEXT QUESTIONS 10.2 

1. Write three bad effects of noise. 

Ans: The three effects of noise:

(a) causes headaches 

 (b) causes deafness 

 (c) causes danger to the heart and blood vessels.

2. Was Naseer aware of the damage the noise caused? How do you know? 

Ans:Naseer was not aware of the damage caused by noise; we know this because he always boasted that he could sleep even when there was noise of traffic or television around him.

3. How did the noise affect Naseer? 

Ans:Naseer had frequent headaches.

4. Why did Naseer often have headaches? 

Ans:Naseer had headaches because he used to be exposed to noise even when he was sleeping.

5. What do you think Naseer should do to reduce his headaches? 

Ans:He could use ear plugs, request his neighbours to reduce the volume of the television, move to a quieter locality etc.

6. Why do blood vessels in the brain expand?

Ans:Blood vessels in the brain expand when we are exposed to noise.

INTEXT QUESTIONS 10.3 

Answer the following: 

1. How is the inner ear damaged? 

Ans:When we are exposed to very loud noise.

2. What will happen if we ourselves start thinking about the harmful effects of noise? 

Ans:We would stop creating unnecessary noise.

3. Why does the author advise people not to slam or throw books on a desk but put them down gently. 

Ans: The author advise people not to slam or throw books on a desk but put them down gently because  unnecessary noise is generated.

4. List out the different gadgets you use at home. Which of these makes the most noise? How does its noise affect the members of your household?

Ans: Mixers, hair dryers, music systems, televisions etc. The noise irritates the members of the household, can’t study, they ask us to switch it off, shut doors to keep out the noise etc

TERMINAL QUESTIONS 

1. What happens if somebody is exposed to loud noise for a long period? 

Ans:If somebody is exposed to loud noise for a long period it can causen hearing loss.

2. In what way can school children help reduce noise pollution? 

Ans:School children help reduce noise pollution by walking quietly, talking softly, not burning crackers.

3. Do you know why we cover our ears when there is too much of noise?

Ans:We cover our ears when there is too much of noise because it is painful to our ears.

4. Can you guess how much the sound of thunder would measure in terms of decibels?

Ans:The sound of thunder would measure in terms of 100-145 decibels.

5. List out noises that you find intolerable and give suggestions to reduce them. 

Ans:Some of the annoying noises and the ways to reduce them are as follows:

a. Noise from vehicles- this leads to sound pollution and can be reduced if 'No horn' zones are created on the busy streets.

b. Noise from parties in residential areas- Sound systems should be kept at a lower volume and rules should be imposed regarding such issues.

c. Snoring- this is caused due to some disorder and can be rectified.

d. Sounds from machines- this is mainly caused due to friction between the moving parts and can be controlled by proper greasing or oiling.


6. This Diwali what is the best gift you can present yourself and to others to lead a healthy life?

Ans:Noises that are intolerable are sound of loud speakers, car horns, crackers. Avoid the use of loud speakers, reduce its volume, and follow regulations regarding silence zones, stop bursting crackers.

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