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Class 8 Science MCQ Questions of Some Natural Phenomena with Answers?

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MCQ Questions of Some Natural Phenomena will assist students to cover the whole chapter quickly. By solving these questions students can gain their confidence level while writing the ultimate question paper. Students are advised to unravel Class 8 Science MCQ Questions of Some Natural Phenomena, to assist students we’ve provided MCQ Questions with Answers

Practice Some of the Multiple Choice Questions of Some Natural Phenomena are given underneath and revise chapters properly. These MCQ Questions for Class 8 Science with Answers are arranged depending on the most recent exam pattern. MCQ Questions for class 8 Science with Answers are prepared as per the newest Exam Pattern. Students can solve Class 8 MCQ Questions and assess their preparation level.

Practice Class 8 Science MCQ Questions chapter-wise

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

(a) earthing
(b) lightning
(c) oscillation motion
(d) electron movement

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

(a) seismic scale
(b) iron scale
(c) richter scale
(d) large scale

3. Which instrument is used to measure earthquakes?

(a) Richter scale
(b) Seismograph
(c) Polygraph
(d) None of these

4. Which is not a natural phenomenon?

(a) Earthquakes
(b) Cyclones
(c) Lightning
(d) Earthing

5. How many types of charges are gained by rubbing objects?

(a) 2
(b) 1
(c) 3
(d) 4

6. A lightning conductor installed in a building :

(a) Does not allow the lightning to fall on the building
(b) Repels the lightning
(c) Forces the lightning to fall in an area where there are no buildings
(d) Conducts electric charge to the ground when lightning strikes the building

7. Lightning always follows

(a) a thunder
(b) rain pour
(c) the easiest path
(d) a straight path

8. Tsunami means

(a) earthquake
(b) floods
(c) an earthquake under the sea
(d) eruption of a volcano in a sea

9. The waves produced on the earth’s surface is called

(a) seismic wave
(b) longitudinal wave
(c) Microwave
(d) Radio wave

10. Amber is a

(a) metal
(b) rubber
(c) resin
(d) sugar

11. Which is the surest test of charge on a body?

(a) Repulsion
(b) Lightning
(c) Combustion
(d) Insulation

12. Which of the following can be charged by rubbing?

(a) Ebonite
(b) Plastic
(c) Amber
(d) All of these

13. When two bodies are rubbed against each other :

(a) They acquire equal and similar charges
(b) They acquire equal and opposite charges
(c) They acquire different charges but in different amounts depending upon their masses
(d) They do not acquire any charge

14. It is a convention to call the charge acquired by a glass rod when it is rubbed with silk as __________

(a) Negative
(b) Positive
(c) Neutral
(d) Can be anyone

15. A device used to test whether an object is carrying charge or not is called ______.

(a) Electrometer
(b) Charge meter
(c) Electroscope
(d) Chargoscope

16. The device that is used to protect buildings from the effects of lightning is:

(a) transformer
(b) transducer
(c) electrode
(d) lightning conductor

17.  A major earthquake occurred on 26th January 2001 in which part of India?

(a) Uri (Kashmir)
(b) Mumbai (Maharastra)
(c) Guwahati (Assam)
(d) Bhuj (Gujarat)

18. During thunderstorm it is safer to

(a) Carry an open umbrella
(b) Take shelter under short trees
(c) Take shelter under tall trees
(d) Stand in open fields

19. Like charges

(a) attract each other
(b) repel each other
(c) no interaction takes place
(d) none of these

20. The shaking and trembling of the earth is called

(a) tsunami
(b) volcano
(c) earthquake
(d) none of these

21.  Major earthquakes are less likely to occur in

(a) North-East India
(b) Rajasthan
(c) Rann of Kutch
(d) Odisha

22. Lightning always follows

(a) rain
(b) thunder
(c) the easiest path
(d) a straight path

23. A major tsunami occurred on 26th December 2004 in which ocean?

(a) Indian Ocean
(b) Pacific Ocean
(c) North Atlantic Ocean
(d) South Atlantic Ocean

24. Sparks can be seen on an electric pole when wires become

(a) loose
(b) tight
(c) wrinkled
(d) none

25. Which of the following allows the transfer of electric charge from one charged object to another?

(a) Vacuum
(b) Air
(c) Insulator
(d) Conductor

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Answer:

1. Answer: (a) earthing

Explanation: The process of transferring of charge from a charged object to the earth is called earthing.

2. Answer: (c) richter scale

Explanation: The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.

3. Answer: (b) Seismograph

Explanation: Seismic waves caused by an earthquake, other Earth-shaking phenomenon or explosion are recorded or measure using the instrument called Seismograph.

4. Answer: (d) Earthing

Explanation: Earthing is not a natural phenomenon. Types of natural phenomena include Weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, a moonbow, blood moon, and natural disasters such as electromagnetic pulses, volcanic eruptions, earthquakes, midnight sun and polar night.

5. Answer: (a) 2

Explanation: There are two types of charges are gained by rubbing objects. They are positive and negative charges.

6. Answer: (d) Conducts electric charge to the ground when lightning strikes the building

Explanation: Lightning conductors are installed in buildings to provide a path for electric discharge during a lightning strike let them reach the ground and protect the building from a lightning strikes.

7. Answer: (a) a thunder

Explanation: Lightning always follows thunder because it depends on the speed of sound and light.

8. Answer: (c) an earthquake under the sea

Explanation: Tsunami is caused due to disturbance caused by deep down the sea. Lightening will not cause any disturbance for the sea whereas earthquakes, A major nuclear explosion undersea, and Volcanic eruption can cause a disturbance in the sea.

9. Answer: (a) seismic wave

Explanation: Seismic waves fall into two general categories: body waves which travel through the interior of the earth and surface waves which travel on the only at the Earth's surface.

10. Answer: (c) resin

Explanation: Amber is formed from resin exuded from tree bark, although it is also produced in the heartwood. Resin protects trees by blocking gaps in the bark. Once resin covers a gash or break caused by chewing insects, it hardens and forms a seal.

11. Answer: (a) Repulsion

Explanation: Repulsion is being considered as the sure test of charge on body as the induction of charge is possible between an uncharged body and charged body when brought close together.

12. Answer: (d) All of these

Explanation: Ebonite gets charged by rubbing on fur. Plastic also gets charged on rubbing by fur. and Amber also gets charged by rubbing on fur.

13. Answer: (b) They acquire equal and opposite charges

Explanation: When two bodies are rubbed against each other, some electrons are transferred from one body to another body. Hence one body has a deficiency of electrons and other body has an excess of electron by the same amount. Hence, one body acquire positive while other acquires negative charge of same magnitude.

14. Answer: (b) Positive

Explanation: It is a convention to call the charge acquired by a glass rod when it is rubbed with silk as Positive.

15. Answer: (c) Electroscope

Explanation: An electroscope is a device that is used for the detection and identification of charges on objects.

16. Answer: (d) lightning conductor

Explanation: When a building is hit by lightning, the lightning conductor conducts all charges straight into the Earth thus protecting the building from damage.

17. Answer: (d) Bhuj (Gujarat)

Explanation: The 2001 Gujarat earthquake, also known as the Bhuj earthquake, occurred on 26 January, India's 52nd Republic Day, at 08:46 am IST.

18. Answer: (b) Take shelter under short trees

Explanation: As the discharge of a huge amount of electric charge prefers the conductors of narrow cross-section, that is, pointed end, lightening always prefers to discharge through the pointed end. Hence, it is safe to take shelter under short trees instead of a single tall tree.

19. Answer: (b) repel each other

Explanation: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge.

20. Answer: (c) earthquake

Explanation: An earthquake is an intense shaking of the Earth's surface. The shaking is caused by movements in Earth's outermost layer.

21. Answer: (d) Odisha

Explanation: In Orissa, major earthquakes are less likely to occur. Kashmir, the Western and Central Himalayas, the entire North-East, the Rann of Kutch, Rajasthan, and the Indo-Gangetic Plain are perhaps the most dangerous regions in India.

22. Answer: (b) thunder

Explanation: Lightning always follows thunder because it depends on the speed of sound and light.

23. Answer: (a) the Indian Ocean

Explanation: The tsunami wave struck havoc in the Indian Ocean on the 26 December 2004. The wave was the result of the earthquake that had its epicenter close to the western boundary of Sumatra. The magnitude of the earthquake was 9.0 on the Richter scale.

24. Answer: (a) loose

Explanation: Sparks on an electric pole when wires become loose. This phenomenon is quite common when the wind is blowing and shaking the wires. You might also have seen sparks when a plug is loose in its socket. Lightning is also an electric spark but on a huge scale.

25. Answer: (d) Conductor

Explanation: A conductor is any material that allows the passage of free electrons. Examples of conductors include copper and iron.

Click here Practice MCQ Questions for Some Natural Phenomena Class 8

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