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Some Natural Phenomena Class 8 MCQs Questions with Answers
Solving the Some Natural Phenomena Multiple Choice Questions of Class 8 Science Chapter 15 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Some Natural Phenomena Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 15 Science Class 8 and cross-check your answers during preparation.
Question 1.
We hear a thunder because:
(a) a lot of energy is released
(b) air beata up and explode
(c) a lot of charge goes in lightning
(d) clouds bang against each oilier
Answer
(b) air beata up and explode
We hear a thunder because air heats up and explode.
Question 2.
It is safe to be in ………………… daring a lightning.
(a) open
(b) building
(c) car or bus
(d) both (b) and (c)
Answer
(d) both (b) and (c)
It is safe to be in building or car or bus during a lightning.
Question 3.
Areas falling on joints of seismic pintes are called:
(a) safe zones
(b) fault zones
(c) high zones
(d) none of these
Answer
(d) none of these
Areas falling on joints of seismic plates are called fault zones.
Question 4.
The power of an earthquake is expressed on scale called:
(a) metre scale
(b) richter scale
(c) centimetre scale
(d) none of these
Answer
(b) richter scale
The power of an earthquake is expressed on Richter scale.
Question 5.
The two objects rubbed against each other:
(a) will gain elections
(b) will lose elections
(c) one will gain electrons and other will lose electrons
(d) noise of these
Answer
(c) one will gain electrons and other will lose electrons
When two objects are rubbed against each other than one will gain electrons and other will lose electrons.
Question 6.
Which of the following occurs during lightning:
(a) nitrogen fixation
(b) greenhouse effect
(c) acid ram
(d) none of these
Answer
(a) nitrogen fixation
Nitrogen fixation occurs during lightning.
Question 7.
Lightning always follows:
(a) a thunder
(b) rain pour
(c) wind
(d) none of these
Answer
(a) a thunder
Lightning always follows a thunder.
Question 8.
The natural phenomenon which we are not yet able to predict acc.rately Is:
(a) cyclone
(b) thunderstorm
(c) earthquake
(d) all of these
Answer
(c) earthquake
Earthquake is the natural phenomenon which we are not yet able to predict accurately.
Question 9.
Earthing la the process of Transferring of charge from:
(a) the earth to a charged object
(b) charged object to uncharged object
(c) charged object to the earth
(d) none of these
Answer
(c) charged object to the earth
Earthing is the process of transferring of charge from charged object to the earth.
Question 10.
The electrical charge can b. transferred front a charged object to another through a:
(a) non-metal insulator
(b) metal insulator
(c) metal conductor
(d) none of these
Answer
(c) metal conductor
The electrical charge can be transferred from a charged object to another through a metal conductor.
Question 11.
The denier used to teat whether an object la carrying charge or not is cased:
(a) electrometer
(b) chargecope
(c) electroscope
(4) none of these
Answer
(c) electroscope
Electroscope is the device used to test whether an object is carrying charge or not.
Question 12.
On rubbing ………………… electricity is produced.
(a) static
(b) curent
(c) both (a) and (b)
(d) none of these
Answer
(a) static
On rubbing static electricity is produced.
Question 13.
A charged balloon ………………. a charged balloom.
(a) attract
(b) repels
(c) neither attracts nor repels
(d) none of these
Answer
(b) repels
A charged balloon repels a charged balloon.
Question 14.
A charged balloon a charged refill.
(a) attracts
(b) repels
(c) neither attracts nor repels
(d) none of these
Answer
(a) attracts
A charged balloon attracts a charged refill.
Question 15.
Is lightning sad the spark from our cloths the same phenomena.
(a) yes
(b) no
(c) can’t say
(d) none of these
Answer
(a) yes
Yes, lightning and the spark from our clothes are the same phenomenon.
Question 16.
When glass rod is rubbed with silken cloth than glass rod has:
(a) negative charge
(b) positive charge
(c) sometimes negative charge and sometimes positive charge
(d) no charge
Answer
(a) negative charge
When glass rod is rubbed with silken cloth than glass rod has positive charge. The silken cloth acquires has negative charge.
Question 17.
When ebonite rod ea rubbed with woollen cloth than ebonite rad has:
(a) negative charge
(b) postie charge
(c) sometimes negative charge and sometimes positive charge
(d) no charge
Answer
(a) negative charge
When ebonite rod is rubbed with woollen cloth than ebonite rod has negative charge. The charge of woollen cloth will be positive.
Question 18.
Same charged bodies:
(a) attract each other
(b) repel each other
(c) fast attracts arid then repels each other
(d) none of these
Answer
(a) attract each other
Same charged bodies repel each other.
Question 19.
Oppositely charged bodies:
(a) attract each other
(b) repel each other
(c) first attracts and then repel each other
(d) none of these
Answer
(a) attract each other
Oppositely charged bodies attract each other.
Question 20.
Any object can be charged by which of the following method:
(a) friction
(b) contact
(c) induction
(d) all of these
Answer
(a) friction
Any object can be charged by friction, contact, induction.
Question 21.
When object is rubbed than it is:
(a) worn out
(b) charged
(c) spoiled
(d) not charged
Answer
(b) charged
When object is rubbed then it is charged.
Question 22.
When two charged bodies are brought near each other than there is:
(a) attraction
(b) either attraction repulsion
(c) repulsion
(d) neither attraction nor repulsion
Answer
(b) either attraction repulsion
When two charged bodies are brought near each other than there is either attraction or repulsion.
Question 23.
Which of the following has negative charge:
(a) woollen cloth
(b) comb
(c) paper
(d) cotton cloth
Answer
(b) comb
Comb has negative charge. Woollen cloth, paper and cotton cloth has positive
Question 24.
The Instrument that can help as detect charge called:
(a) electroscope
(b) electrometer
(c) barometre
(d) sohametre
Answer
(a) electroscope
The instrument that can help us detect charge is called electroscope.
Question 25.
Which of the following thing when rubbed with dry hair doe* not attract small pieces of paper:
(a) candle
(b) steel bowl
(c) piece of thermocole
(d) plastic bottle
Answer
(b) steel bowl
Steel bowl when rubbed with dry hair does not attract small pieces of paper because it is a conductor.
Question 26.
Lightning occurs due to:
(a) rain
(b) electric discharge
(c) wind
(d) lord Varun’s angel
Answer
(b) electric discharge
Lightning occurs due to electric discharge.
Question 27.
A lightning dictator:
(a) conducts electricity
(b) Mops lightning
(c) saves building from electric discharge
(d) all of these
Answer
(c) saves building from electric discharge
A lightning conductor saves building from electric discharge. It provides easy route for the transfer of electric charge to the ground.
Question 28.
Shaking of earth b called:
(a) volcano
(b) tsunami
(c) earthquake
(d) bout (b) and (c)
Answer
(c) earthquake
Shaking of earth is called earthquake.
Question 29.
Which of the following cannot he charged easily by fraction:
(a) a plastic scale
(b) a copper rod
(c) an inflated balloon
(d) swollen cloth
Answer
(b) a copper rod
A copper rod cannot be charged easily by friction because it is a conductor.
Question 30.
When a glass rod is rubbed with a piece of silk cloth the rod:
(a) and the cloth both acquire positive charge
(b) becomes positively charged while the cloth has a negative charge
(c) and the cloth both acquire negative charge
(d) becomes negatively charged white the cloth has a positive charge
Answer
(b) becomes positively charged while the cloth has a negative charge
When a glass rod is rubbed with a piece of silk cloth the rod becomes positively charged while the cloth has a negative charge.
Match the Column-A with Column-B:
Question 1.
| Column-A | Column-B |
| (a) Same charged bodies | (i) earthquake |
| (b) Opposite charged bodies | (ii) friction |
| (c) Cannot be charged | (iii) repel each other |
| (d) Objects can be charged by | (iv) attract each other |
| (e) Shaking of earth | (v) an aluminium foil |
Answer
| Column-A | Column-B |
| (a) Same charged bodies | (iii) repel each other |
| (b) Opposite charged bodies | (iv) attract each other |
| (c) Cannot be charged | (v) an aluminium foil |
| (d) Objects can be charged by | (ii) friction |
| (e) Shaking of earth | (i) earthquake |
Question 2.
| Column-A | Column-B |
| (a) The process of transferring of charge from a charged object to the earth | (i) is fragmented |
| (b) A house or a building is a safe place during | (ii) Richter scale |
| (c) Earthquakes are more likely to occur | (iii) earthing |
| (d) The outermost layer of the earth | (iv) lightning |
| (e) The scale expressing the magnitude of earthquake is | (v) seismic zones |
Answer
| Column-A | Column-B |
| (a) The process of transferring of charge from a charged object to the earth | (iii) earthing |
| (b) A house or a building is a safe place during | (iv) lightning |
| (c) Earthquakes are more likely to occur | (v) seismic zones |
| (d) The outermost layer of the earth | (i) is fragmented |
| (e) The scale expressing the magnitude of earthquake is | (ii) Richter scale |
Question 3.
| Column-A | Column-B |
| (a) Accumulation of charges lead to | (i) static |
| (b) Two charged refills | (ii) lightning |
| (c) Phenomena which can be predicted | (iii) repel each other |
| (d) Electric charges generated by rubbing are | (iv) thunderstorm |
Answer
| Column-A | Column-B |
| (a) Accumulation of charges lead to | (ii) lightning |
| (b) Two charged refills | (iii) repel each other |
| (c) Phenomena which can be predicted | (iv) thunderstorm |
| (d) Electric charges generated by rubbing are | (i) static |
State whether the following statements are True or False:
Question 1.
We cannot predict floods or cyclones.
Answer
False
Question 2.
Electric discharge takes place between similar charges.
Answer
False
Question 3.
We should avoid sitting inside the car during lightning.
Answer
False
Question 4.
Lightning can cause harm to our electrical instruments.
Answer
True
Question 5.
Indians considered lightning as sacred.
Answer
False
Question 6.
Lightning rod is used to save buildings from lightning strike.
Answer
True
Question 7.
Umbrellas are safe during lightning.
Answer
False
Question 8.
We can use the wired telephones during lightning.
Answer
False
Question 9.
Silk gets positively charged when rubbed with glass rod.
Answer
False
Question 10.
If the knob of charged electroscope is touched by hand then the strips revert back to their original position.
Answer
True
Question 11.
Like charges attract each other.
Answer
False
Question 12.
A charged glass rod attract a charged plastic straw.
Answer
True
Question 13.
Lightning conductor cannot protect a building from lightning.
Answer
Answer: (a)
False
Question 14.
Earthquakes can be predicted in advance.
Answer
False
Fill in the blanks:
Question 1.
The explosive sound heard during lightning is called ………………..
Answer
thunder
Question 2.
……………….. is the process of discharging atmospheric electricity through a conductor into earth.
Answer
Earthing
Question 3.
Like charge ……………….. and unlike charge ………………..
Answer
repel, attract
Question 4.
……………….. electricity consists of electric charges which do not flow.
Answer
Static
Question 5.
An ebonite rod when rubbed with fur develops a ……………….. charge.
Answer
negative
Question 6.
……………….. , ………………..can take place due to an earthquake.
Answer
Tsunami, flood
Question 7.
Interaction between opposite charges producing huge energy is called ………………..
Answer
electric discharge
Question 8.
Static electricity is so called because it cannot ………………..
Answer
move
Question 9.
Conventionally a glass rod acquires a ……………….. charge on rubbing.
Answer
positive
Question 10.
On rubbing against each other, the bodies get …………………
Answer
charged
Question 11.
A rapid flow of charge through air in clouds is called ………………..
Answer
lightning
Question 12.
Amber is a …………………
Answer
resin
Question 13.
When two bodies are charged by rubbing against each other, they acquire ……………….. and ……………….. charge.
Answer
positive, legative
Question 14.
Due to rubbing of air particles the water droplets in clouds get ……………….. charge.
Answer
negative
Question 15.
A charged balloon ……………….. a charged refill.
Answer
attracted
Question 6.
……………….. showed that lightning and the spark from our clothes are essentially the same phenomena.
Answer
Benjamin Franklin
Question 7.
The electrical charge can be transferred from a charged object to another through a ………………..
Answer
metal conductor
Question 8.
Air is a ……………….. conductor of electricity.
Answer
poor
Question 9.
……………….. can not be predicted.
Answer
Earthquake
Question 10.
A ……………….. can save a building from lightning strike.
Answer
lightning rod
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