MEDIUM
8th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram of larynx and explain its functions.

Important Questions on Sound

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Short Answer Type Questions>Q 75
Give two causes of noise pollution from the homes.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Short Answer Type Questions>Q 75
What are the usual causes of the partial hearing loss suffered by a person?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 76
How can you show that sound cannot travel through a vacuum? Draw a labelled diagram of the apparatus used.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 77
What is meant by the 'time-period' of a vibrating object? State its unit.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 77
Define 'frequency' of a vibrating object. Name the unit in which frequency is measured.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 77
A pendulum oscillates 40 times in 4 seconds. Calculate its
(i) time-period, and
(ii) frequency. Can we hear the sound produced by the oscillations of this pendulum? Give reason for your answer.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 79
What is noise? Give two examples of sounds which are considered noise.
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Long Answer Type Questions>Q 79
What is a musical sound? Give two examples of musical sounds.