On account of the disruption in education due to the corona pandemic, we're opening up our platform for teachers, free of cost. Know More →

Class 8

Explore popular questions from Some Natural Phenomena for Class 8. This collection covers Some Natural Phenomena previous year Class 8 questions hand picked by experienced teachers.

Some Natural Phenomena

Correct Marks 1

Incorrectly Marks 0

Q 1. Which of the following cannot be charged easily by friction?

A

Plastic scale

B

Woolen cloth

Copper rod

D

Inflated balloon

Correct Marks 1

Incorrectly Marks 0

Q 2. Charge can be produced on a body by

Induction

B

Heating

C

Pressuring

D

Cooling

Correct Marks 1

Incorrectly Marks 0

Q 3. A body is negatively charged means

Excess of electron

B

Deficiencyof electron

C

Extra mass on body

D

Excess of neutrons

Correct Marks 1

Incorrectly Marks 0

Q 4. During thunderstorms lightning which will be seen/heard first-

Light

B

Sound

C

Both same time

D

None

Correct Marks 1

Incorrectly Marks 0

Q 5. The process of transfer of charges from a charged object to the earth is called

earthing

B

lightning

C

oscillation motion

D

electron movement

Correct Marks 1

Incorrectly Marks 0

Q 6. The power of an earthquake is expressed on a scale called

A

seismic scale

B

iron scale

richter scale

D

large scale

Correct Marks 1

Incorrectly Marks 0

Q 7. Which instrument is used to measure earthquake?

A

Richter scale

Seismograph

C

Polygraph

D

None of these

Correct Marks 1

Incorrectly Marks 0

Q 8. Which is not a natural phenomena?

A

Earthquakes

B

Cyclones

C

Lightning

Earthing

Correct Marks 1

Incorrectly Marks 0

Q 9. Where is the lightning rod attached to protect the building from lightning?

On the top of the building

B

On the bottom of the building

C

In the middle of the building

D

All of these

Correct Marks 1

Incorrectly Marks 0

Q 10. Lightning always follows

a thunder

B

rain pour

C

the easiest path

D

a straight path

Correct Marks 1

Incorrectly Marks 0

Q 11. Tsunami means

A

earthquake

B

floods

earthquake under the sea

D

eruption of volcano in a sea

Correct Marks 1

Incorrectly Marks 0

Q 12. Which of the following can be charged with static electricity?

A

Metal

B

Alloy

Insulator

D

Semiconductor

Correct Marks 1

Incorrectly Marks 0

Q 13. Lightning occurs because of

A

rain

electric discharge

C

wind

D

angry Gods

Correct Marks 1

Incorrectly Marks 0

Q 14. The air in the path of lightning goes up to a temperature of about

A

300°C

B

3000°C

C

300,000°C

30,000°C

Correct Marks 1

Incorrectly Marks 0

Q 15. If you are caught in a thunderstorm you should

A

go and stand on a high ground

B

stand under a tree

take shelter indoors

D

All of the above

Correct Marks 1

Incorrectly Marks 0

Q 16. Charged objects exert a ............. on each other

A

cloud

B

lightning

force

D

power

Correct Marks 1

Incorrectly Marks 0

Q 17. We hear a thunder because

A

a lot of charge goes in lightning

B

because lightning is very bright

because the air heats up and expands all of a sudden

D

Clouds bang against each other

Correct Marks 1

Incorrectly Marks 0

Q 18. The process of discharging atmospheric electricity into the earth by a lightning conductor is called :

A

electrical neutralization

B

short-circuiting

earthing

D

both (A) and (B)

Correct Marks 1

Incorrectly Marks 0

Q 19. The point directly above the origin point of the earthquake under the surface of the earth is called :

A

seismic focus

B

seismic front

epicentre

D

Both (A) and (B)

Correct Marks 1

Incorrectly Marks 0

Q 20. Static electricity or electrostatics is the electricity in which

A

Charges are in motion

Charges are at rest

C

Both (a) and (b)

D

None of these

Correct Marks 1

Incorrectly Marks 0

Q 21. Similar charges :

Repel each other

B

Attract each other

C

Neither attract nor repel

D

None

Correct Marks 1

Incorrectly Marks 0

Q 22. Repulsion is:

The surest test for electrification

B

The only property of charge

C

Neither (a) nor (b)

D

All of these

Correct Marks 1

Incorrectly Marks 0

Q 23. Three subatomic particles are

Neutrons, protons and electrons

B

Nucleus, protons and gamma-rays

C

Neutrons, X-rays and gamma-rays

D

All of these

Correct Marks 1

Incorrectly Marks 0

Q 24. When two clouds having huge amount of positive and negative charges approach each other, then :

A

The air becomes a good conductor of electricity

B

The air becomes a bad conductor of electricity

Huge discharge passes across them, called lightning

D

None of these

Correct Marks 1

Incorrectly Marks 0

Q 25. Generally lower part of clouds has :

A

positive charge

negative charge

C

zero charge

D

any type of charge