Forum

Sound

Sketch larynx and explain its function in your own words.

05/11/2024

Science

8th

Sound

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
would you suggest your parents should buy? Explain your answer.

05/11/2024

Science

8th

Sound

Explain in what way noise pollution is harmful to human.

05/11/2024

Science

8th

Sound

List sources of noise pollution in your surroundings.

05/11/2024

Science

8th

Sound

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

05/11/2024

Science

8th

Sound

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

05/11/2024

Mathematics

8th

Tissues

List the characteristics of cork. How are they formed? Mention their role.

05/11/2024

Science

9th

Sound

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?

05/11/2024

Science

8th

Sound

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

05/11/2024

Science

8th

Sound

Fill in the blanks with suitable words.
(a) Time taken by an object to complete one oscillation is called
__________.
(b) Loudness is determined by the __________ of vibration.
(c) The unit of frequency is __________
(d) Unwanted sound is called __________ .
(e) Shrillness of a sound is determined by the __________ of vibration.

05/11/2024

Science

8th