Science

Sound

Question:

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

Answer:

The sound that is pleasing to the ear is called music. For example, the sound produced by violins, pianos, flutes, pungs, etc. The sound that is unpleasing to the ear is called noise. Some examples of noise are as follows:
(i) Sound produced by horns of buses and trucks
(ii) Sound of electrical generators.
(iii)Sound of a gun shot.
(iv)Sound produced by jackhammers Yes. Music can become noise when played at high volumes.
previuos
next

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