MCQ on Some Natural Phenomena Class 8
Choose the correct answer.
Question 1.
Which of the following is not a natural phenomenon?
A) tsunami
B) lightning
C) pollution
D) earthquake
Answer:
C) pollution
Question 2.
Which of the following is caused by the accumulation of charges in the clouds?
A) tsunami
B) lightning
C) pollution
D) earthquake
Answer:
B) lightning
Question 3.
Who was shown that lightning and the spark from our clothes are essentially the same phenomena?
A) Benjamin Franklin
B) Sir Isaac Newton
C) Sir CV. Raman
D) Aristotle
Answer:
A) Benjamin Franklin
Question 4.
When you rub a plastic scale on your dry hair, the scale can attract very small pieces of paper. Because of
A) heat
B) static electricity
C) friction
D) magnetism
Answer:
A) Benjamin Franklin
Question 5.
Attraction takes place between
A) charged balloons
B) charged refills
C) charged balloon and a charged refill
D) none
Answer:
C) charged balloon and a charged refill
Question 6.
Which of the following is a correct statement?
A) A charged balloon repelled a charged balloon.
B) A charged refill repelled a charged refill.
C) A charged balloon attracted a charged refill.
D) None
Answer:
D) None
Question 7.
Moving charges are called
A) static
B) electricity
C) both A and B
D) earthquake
Answer:
B) electricity
Question 8.
Which of the following is a correct statement ?
i) The charge on the balloon is of a different kind from the charge on the refill.
ii) The charge on the glass rod is of the same kind as the charge on the refill.
A) (i) only
B) (ii) only
C) both (i) and (ii)
D) none
Answer:
A) (i) only
Question 9.
The device can be used to test whether an object is carrying a charge or not is
A) electroscope
B) microscope
C) telescope
D) seismograph
Answer:
A) electroscope
Question 10.
If we touch the end of the metal rod of charged electroscope gently with our hand and we will find a change in aluminium foils
A) more repulsion
B) collapse
C) burn
D) shake
Answer:
B) collapse
Question 11.
The process of transferring charge from a charged object to the earth is called
A) rubbing
B) electrifying
C) earthing
D) charging
Answer:
C) earthing
Question 12.
Which is provided in buildings to protect us from electrical shocks due to any leakage of electrical current?
A) lightning conductor
B) fuse
C) earthing
D) charging point
Answer:
C) earthing
Question 13.
Airis………
A) a lightning conductor
B) a poor conductor
C) a good conductor
D) none
Answer:
B) a poor conductor
Question 14.
Electrical discharge is involved in
A) tsunami
B) lightning
C) cyclone
D) earthquake
Answer:
B) lightning
Question 15.
The process of electric discharge can occur between two or more clouds, or between clouds and the earth.
A) two clouds
B) more clouds
C) clouds and the earth
D) above all
Answer:
D) above all
Question 16.
Which of the following could destroy life and property ?
A) lightning
B) cyclone
C) earthquake
D) above all
Answer:
C) earthquake
Question 17.
Which of the following cannot be predicted by the weather department?
A) lightning
B) cyclone
C) earthquake
D) above all
Answer:
C) earthquake
Question 18.
During lightning and thunderstorm safest place is ……………….
A) open place
B) tall tree
C) electrical towers
D) none of the above
Answer:
D) none of the above
Question 19.
The safe position shown in the figure is advisable for protecting from
A) lightning
B) cyclone
C) earthquake
D) above all
Answer:
A) lightning
Question 20.
Which of the following cannot do while lightning ?
A) bathing
B) holding mobile phone
C) lightning the bulbs
D) above all
Answer:
A) bathing
Question 21.
Which of the following device is used to protect from lightning ?
A) lightning conductor
B) fuse
C) earthing
D) charging point
Answer:
A) lightning conductor
Question 22.
If a thunderstorm occurs there is always a possibility of …………………… accompanying it.
A) lightning
B) cyclones
C) both A and B
D) earthquake
Answer:
C) both A and B
Question 23.
Lightning conductors are made with
A) metals
B) non-metals
C) wood
D) rubber
Answer:
A) metals
Question 24.
A major earthquake occurred in India on ………………. in Uri and Tangdhar towns of
North Kashmir
A) 26 January 2001
B) 26 January 2011
C) 8 October 2015
D) 8 October 2005
Answer:
D) 8 October 2005
Question 25.
A major earthquake occurred on 26 January 2001 in the Bhuj district of …………………. .
A) A.P.
B) Kashmir
C) Gujarat
D) Rajasthan
Answer:
C) Gujarat
Question 26.
It is caused by a disturbance deep inside the earth’s crust.
A) lightning
B) cyclones
C) both A and B
D) earthquake
Answer:
D) earthquake
Question 27.
Earthquakes occurs
A) all the time, all over the earth.
B) sometime, all over the earth.
C) sometimes, some places.
D) all the time, some places.
Answer:
A) all the time, all over the earth.
Question 28.
Earthquakes can cause,
A) floods
B) landslides
C) tsunamis
D) above all
Answer:
D) above all
Question 29.
A major tsunami occurred in the Indian Ocean on
A) 26 January 2001
B) 26 December 2004
C) 8 October 2015
D) 8, October 2005
Answer:
B) 26 December 2004
Question 30.
The outermost layer of the earth is
A) crust
B) mantle
C) inner core
D) outer core
Answer:
A) crust
Question 31.
Plate are situated in
A) crust
B) mantle
C) inner core
D) outer core
Answer:
A) crust
Question 32.
The weak zones of earthquake are
A) the boundaries of the plates.
B) the middle of the plates.
C) the upper part of the plates.
D) above all
Answer:
A) the boundaries of the plates.
Question 33.
Seismic or fault zones in India are
A) Kashmir
B) The whole of North-East
C) Rajasthan and the Indo-Gangetic Plane
D) Above all
Answer:
D) Above all
Question 34.
The power of an earthquake is expressed in terms of a magnitude on a scale called the
A) Decibel
B) Mantle
C) Richter
D) Electric
Answer:
C) Richter
Question 35.
Really destructive earthquakes have magnitudes ……………….. on the Richter scale.
A) lower than 7
B) higher than 7
C) higher than 9
D) none
Answer:
B) higher than 7
Question 36.
Both Bhuj and Kashmir earthquakes had magnitudes
A) lower than 7
B) higher than 7.5
C) higher than 9.5
D) none
Answer:
B) higher than 7.5
Question 37.
The tremors produce waves on the surface of the earth. These are …………… .
A) ocean waves
B) lightning waves
C) seismic waves
D) above all
Answer:
C) seismic waves
Question 38.
The earthquake waves are recorded by an instrument called
A) seismograph
B) choreograph
C) electroscope
D) microscope
Answer:
A) seismograph
Question 39.
An earthquake of magnitude 6 has times more destructive energy than an earthquake of magnitude 4.
A) 100
B) 1000
C) 10
D) 2
Answer:
B) 1000
Question 40.
The buildings should be built with, …………………. in the seismic zones.
A) bricks and rocks
B) sand and stones
C) cement and iron
D) mud and wood
Answer:
D) mud and wood
Question 41.
………………….. has developed quake-resistant houses.
A) The Central Building Research Institute, Roorkee
B) The Central earthquake Research Institute, Ranchi
C) The disaster management Institute, Gujarat 1
D) None
Answer:
A) The Central Building Research Institute, Roorkee
Question 42.
Where the Central Building Research Institute is located?
A) Ranchi
B) New Delhi
C) Roorkee
D) Hyderabad
Answer:
C) Roorkee
Fill in the blanks.
1. Some objects can be …………………. by rubbing with other objects.
Answer:
Charged
2. There are two kinds of charges ………………… charge and ………………… charge.
Answer:
positive, negative
3. Like charges ……………….. and unlike charges ………………… each other.
Answer:
repel, attract
4. The electrical charges produced by rubbing are called …………………. charges.
Answer:
Static
5. When charges move, they constitute an …………………. current.
Answer:
electric
6. …………………. may be used to detect whether a body is charged or not.
Answer:
An electroscope
7. The process of transfer of charge from a charged object to the earth is called …………………. .
Answer:
earthing
8. The process of …………………. between clouds and the earth or between different clouds causes lightning.
Answer:
electric discharge
9. Lightning strike could destroy …………………. and …………………. .
Answer:
life, property
10. Lightning conductors can protect buildings from the effects of …………………. .
Answer:
lightning
11. …………………. is a sudden shaking or trembling of the earth.
Answer:
An earthquake
12. Earthquake is caused by a disturbance deep inside the earth’s …………………. .
Answer:
crust
13. It is not possible to predict the occurrence of …………………. .
Answer:
an earthquake
14. Earthquakes tend to occur at the boundaries of the earth’s plates. These boundaries are known as …………………. .
Answer:
fault zones
15. Destructive energy of an earthquake is measured on …………………. .
Answer:
the Richter scale
16. The earthquake measuring …………………. or more on the Richter scale can cause severe damage to life and property.
Answer:
7
17. The electrical charges generated by rubbing are …………………. .
Answer:
static
18. When a charged glass rod is brought near a charged plastic straw rubbed with polythene there is ………………… between the two.
Answer:
attraction
19. When charges move, they constitute …………….. .
Answer:
an electric current
20. Electrical charge can be transferred from a charged object to another through …………………. .
Answer:
a metal conductor
21. …………………. is a device used to protect buildings from the effect of lightning.
Answer:
Lightning Conductor
22. …………………. are caused by the disturbance deep down inside the uppermost layer of the earth called the crust.
Answer:
The tremors
23. Most earthquakes are caused by the movement of …………………. .
Answer:
earth’s plates
Match the following.
Question 1.
| Group – A | Group – B |
| i) electroscope | a) tremors |
| ii) seismograph | b) charge |
| c) sound |
Answer:
i – b, ii – a
| Group – A | Group – B |
| i) electroscope | b) charge |
| ii) seismograph | a) tremors |
Question 2.
| Group – A | Group – B |
| i) Earthquakes | a) move to an open place |
| ii) Lightning | b) move to buildings |
| c) move to tall trees |
Answer:
i – b, ii – c
| Group – A | Group – B |
| i) Earthquakes | b) move to buildings |
| ii) Lightning | c) move to tall trees |
Question 3.
| Group – A | Group – B |
| i) Earthquakes | a) water |
| ii) Lightning | b) plates |
| c) charge |
Answer:
i – a, ii – b
| Group – A | Group – B |
| i) Earthquakes | a) water |
| ii) Lightning | b) plates |