NSO Level 1- Science Olympiad (SOF) Class 8: Questions 911 - 917 of 1175

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Question 911

Question

MCQ▾

The propagation of sound is maximum in this medium

Choices

Choice (4)Response

a.

Solid

b.

Liquid

c.

Vacuum

d.

Gas

Question 912

Question

MCQ▾

The difference between music and noise is

Choices

Choice (4)Response

a.

Music is pleasant to hear but noise is unpleasant

b.

Music is produced by the regular or rhythmic vibrations but noise is produced by irregular vibrations

c.

Music improves mental health while noise cause health problems

d.

All a., b. and c. are correct

Question 913

Question

MCQ▾

Sound energy passing through unit area is known as

Choices

Choice (4)Response

a.

Frequency of sound

b.

Wavelength of sound

c.

Loudness of sound

d.

Intensity of sound

Question 914

Question

MCQ▾

A cricket produces sound by the vibration of its

Choices

Choice (4)Response

a.

File and scraper

b.

Vocal cord

c.

Tongue

d.

Teeth

Question 915

Question

MCQ▾

The distance between two consecutive crests or troughs is known as

Choices

Choice (4)Response

a.

Trough

b.

Amplitude

c.

Wavelength

d.

Crest

Question 916

Question

MCQ▾

Bats, whales and dolphins use this sound to communicate

Choices

Choice (4)Response

a.

Audible sound

b.

Ultra sound

c.

Infra sound

d.

All of the above

Question 917

Question

MCQ▾

This sound is not a cause of sound pollution

Choices

Choice (4)Response

a.

Whistling sound from a cooker

b.

Sound from factories or workshops

c.

Sound from a guitar

d.

Sound from automobiles and horns

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