Science

Sound

Question:

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house wouid you suggest your parents should buy? Explain your answer.

Answer:

There will be more noise in the house which is along the roadside. This is because noise produced by transportation vehicles may cause trouble to the residents. The intensity of noise ecreases with the distance between the source and the listener.Hence, it is better to take the house that is three lanes away from the roadside.
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Sound

Q 1.

Your parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house wouid you suggest your parents should buy? Explain your answer.

Q 2.

What is the difference between noise and music? Can music become noise sometimes?

Q 3.

The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?

Q 4.

Explain in what way noise pollution is harmful to humans.

Q 5.

List sources of noise pollution in your surroundings.

Q 6.

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

Q 7.

Sketch larynx and explain its function in your own words.

Q 8.

Identify the part which vibrates to produce sound in the following instruments.(a) Dholak (b) Sitar (c) Flute