CBSE Class-8 Science: Questions 316 - 323 of 469

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Question number: 316

» Sound » Property of Sound » Noise and Music

MCQ▾

Question

A sound which produces a jarring effect on our ear is called as:

Choices

Choice (4) Response
a.

Musical sound

b.

Noise

c.

Music

d.

Noise pollution

Question number: 317

» Some Natural Phenomena » Earthquakes » Protection Against Earthquakes

MCQ▾

Question

If you are in a coastal area what to do during an earthquake?

Choices

Choice (4) Response
a.

In coastal areas move to high ground

b.

Move to lower land

c.

Move away from sea

d. Both a. and c. are correct

Question number: 318

» Sound » Human Ear » Functioning of Human Ear

MCQ▾

Question

Three bones present in the middle ear are:

Choices

Choice (4) Response
a.

Stapes

b.

Incus

c.

Malleus

d. All a. , b. and c. are correct

Question number: 319

» Some Natural Phenomena » Lightning » History of Lightning

MCQ▾

Question

Ancient Greeks thought that the Goddess of wisdom Minerva invented

Choices

Choice (4) Response
a.

Charge

b.

Thunderbolts

c.

Tsunami

d.

Earthquake

Question number: 320

» Some Natural Phenomena » Transfer of Charge » Electroscope

MCQ▾

Question

Electroscope is defined as:

Choices

Choice (4) Response
a.

Lightning conductor

b.

An arrangement to detect charge

c.

A scale used to measure the intensity of earthquake

d. None of the above

Question number: 321

» Chemical Effects of Electric Current » Chemical Effects of Electric Current » Electrodes

MCQ▾

Question

Terminals through which electric current passed are called as:

Choices

Choice (4) Response
a.

Insulators

b.

Electrode

c.

Conductors

d.

LED

Question number: 322

» Friction » Factors Effecting Friction » Spring Balance

MCQ▾

Question

Spring balance is used to measure the value of:

Choices

Choice (4) Response
a.

Weight of object

b.

Force of friction between the surface and object

c.

Relative motion

d.

Force

Question number: 323

» Some Natural Phenomena » Earthquakes » Richter Scale

MCQ▾

Question

A scale used to measure the magnitude of earthquake is:

Choices

Choice (4) Response
a.

Lightning conductor

b.

Richter scale

c.

Seismograph

d.

Electroscope

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