Sound (CBSE Class-8 Science): Questions 1 - 8 of 24

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Question number: 1

» Sound » Amplitude, Time Period & Frequency of Vibration » Decibel

MCQ▾

Question

Unit of loudness is:

Choices

Choice (4) Response

a.

dB

b.

Hz

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 2

» Sound » Sound Produced by Humans » Voice Box in Humans

MCQ▾

Question

Larynx is called as:

Choices

Choice (4) Response

a.

Sound producing organ in human

b.

Body’s voice box

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 3

» Sound » Sound Needs a Medium for Propagation » Sound Needs a Medium to Travel

MCQ▾

Question

Why one cannot listen the sounds on moon?

Choices

Choice (4) Response

a.

There are ultrasonic waves

b.

Maximum vibration of an object

c.

There are infrasonic waves

d.

There is no medium on moon

Question number: 4

» Sound » Amplitude, Time Period & Frequency of Vibration » Amplitude and Frequency of Vibration

MCQ▾

Question

Number of oscillations per second is called as:

Choices

Choice (4) Response

a.

Frequency

b.

Oscillation

c.

Loudness

d.

Time period

Question number: 5

» Sound » Sound » Concept of Sound

MCQ▾

Question

Sound is defined as:

Choices

Choice (4) Response

a.

Sound can be created or transmitted only in medium

b.

Form of energy

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 6

» Sound » Human Ear » Structure of Human Ear

MCQ▾

Question

Ear is divided into how many parts?

Choices

Choice (4) Response

a.

Two

b.

Four

c.

Five

d.

Three

Question number: 7

» Sound » Sound Produced by Humans » Structure of Voice Box

MCQ▾

Question

Sound of low frequency is called as:

Choices

Choice (4) Response

a.

Bass

b.

Amplitude

c.

Vibration

d.

Shrill

Question number: 8

» Sound » Amplitude, Time Period & Frequency of Vibration » Oscillatory Motion

MCQ▾

Question

Back and forth motion of an object is called as:

Choices

Choice (4) Response

a.

Amplitude

b.

Loudness

c.

Vibration

d.

Oscillation

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