CBSE Questions for Class 8 Physics Some Natural Phenomena Quiz 1 - MCQExams.com

The safest place during a thunderstorm is:
  • Under a tree
  • Near electricity poles
  • Inside a car
  • Lying on the ground
State whether the given statement is True or False :
Earthquakes occur all the time all over the world. 
  • True
  • False
Electroscope is an instrument used to find the quantity of charge on different bodies.
  • True
  • False
The natural calamity that cannot be predicted accurately in advance:
  • Flood
  • Cyclone
  • Earthquake
  • Famine
State whether the given statement is True or False :
Tremors on the Earth can also be caused by the eruption of a volcano. 
  • True
  • False
A lightning conductor is made up of:
  • copper
  • glass
  • ebonite
  • wood
Which of the following is safest way to protect yourself from lightning?
  • Run to an open field
  • Open an umbrella for cover
  • Take shelter under trees
  • Squat low on ground
Suppose you are in a car and it is raining heavily with thunderstorms. Then what is the best way to protect yourself from a possible thunder-strike?
  • To remain in the car
  • To get out of the car and take cover under the car
  • To run to a nearby tree
  • To get out and stand under an electric pole
A thunderstorm is generally accompanied by:
  • Lightning
  • Earthquake
  • Fire
  • Mild breeze
In which of the following states of India, earthquake is most likely to occur?
  • Gujarat
  • Chhattisgarh
  • Tamil Nadu
  • Kerala
Magnitude of earthquake is measured in:
  • Electroscope
  • Richter scale
  • Meter scale
  • Coulomb
If earthquake strikes while you are in your bedroom, you should:
  • move under the bed.
  • sit on the bed.
  • stand by the side of the bed.
  • jump on the bed.
During an earthquake, it is always advisable to:
  • Stay at the ground floor of a building.
  • Move to the top floor of a tall building.
  • Stay in open area.
  • Stand under a big tree.
The term used to describe a fracture along the earth's crust is
  • aftershock
  • fault
  • focus
  • tremor
The weak zones around the boundaries of plates underneath Earth, which are prone to slide and cause earthquake are commonly known as:
  • fault zone
  • eruption zone
  • explosive zone
  • sliding zone
Lightning occurs because of :
  • rain
  • electric discharge
  • wind
  • shaking of earth
If a object is charged by contact, it will acquire:
  • opposite charge.
  • negative charge always.
  • same charge as the charged body.
  • positive charge always.
The point where seismic waves originate is called the _______ of the earthquake
  • centre
  • epicenter
  • focus
  • origin
Match the following and choose the correct answer.
Table ATable B
a.Earthquake       1.Prevent leakage
b.Lightning2.Fault zone
c.Insulation3.Detection of charges
d.Electroscope4.Earthing
  • a-2, b-4, c-1, d-3
  • a-3, b-4, c-2, d-1
  • a-4, b-3, c-2, d-1
  • a-1, b-2, c-3, d-4
An earthquake is caused by
  • shaking of the earth
  • strain building up in the tectonic plates
  • plates slipping along the fault lines
  • None of the above
The epicenter is the point inside the earth where the earthquake originates
  • True
  • False
  • Ambiguous
  • Data insufficient
A seismograph is a scale used for measuring the magnitudes of earthquakes
  • True
  • False
  • Ambiguous
  • Data insufficient
A lightning conductor:
  • conducts light
  • stops lightning
  • protect building from the damaging effects of lightning
  • none of these
Earthquakes can be predicted in advance
  • True
  • False
  • Ambiguous
  • Data insufficient
State whether the given statement is True or False :
Lightning conductor cannot protect a building from lightning.
  • True
  • False
The adjoining figure shows a negatively charged electroscope. If a negatively charged rod is brought close to, but not touching, the knob, the two leaves will :
303820.png
  • move closer together
  • move farther apart
  • not move at all
  • None of these
During earthquakes students should crouch under their desks
  • True
  • False
  • Ambiguous
  • Data insufficient
Carrying umbrella is not a good idea at all during thunderstorm.
  • True
  • False
Earthquake and tsunamis are difficult to predict
  • True
  • False
Suppose you are outside your home and an earthquake strikes. What precaution among the following options you should take
  • Try to find a clear spot, away from buildings, trees and over head power lines. Drop to the ground.
  • If you are in a car or a bus, do not.come out. Ask the driver to drive slowly to a clear spot. Do not come out till the tremors stop.
  • Get under a building so that nothing falls on your head.
  • Try and move immediately to a place where you would feel it is safe
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