Class 8 Some Natural Phenomena CBSE Questions & Answers

Class 8 · Some Natural Phenomena

This is Science Class 8 Some Natural Phenomena CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Rearranging charges in uncharged metal object without contact with charged object is called
  • A
    Insulation
  • B
    Conduction
  • C
    Electrical discharge
  • D
    Induction
    Correct
2
Earthquakes are caused by the
  • A
    Tilting of earth axis
  • B
    Movement of earth plates
    Correct
  • C
    Movement of water inside
  • D
    High pollution level
3
Which natural disaster is very rare in India?
  • A
    Thunderstorm
  • B
    Tornado
    Correct
  • C
    Cyclone
  • D
    Earthquake
4
Two objects repel each other. What charges might have?
  • A
    All of these
  • B
    Positive and Negative
  • C
    both Negative or both positive
    Correct
  • D
    Negative and Positive
5
What makes the balloon inflated when placed in hot water?
  • A
    Increase temperature increase the pressure
    Correct
  • B
    Increase temperature make the balloon lighter
  • C
    Increased temperature makes the balloon softer
  • D
    Increased temperature makes the balloon heavy
6
Which of the following is negatively charged?
  • A
    Electron
    Correct
  • B
    Atom
  • C
    Neutron
  • D
    Proton
7
Electrical charges produced by rubbing are called
  • A
    Electrical charge
  • B
    Lightening
  • C
    Dynamic charge
  • D
    Statistic charge
    Correct
8
What happen when glass rod is rubbed with silk and attain positive charge?
  • A
    Electron moves into atmosphere
  • B
    Electron moves out from glass rod
    Correct
  • C
    Electron moves out from silk
  • D
    Proton moves out from glass rod
9
Flash point term is related to
  • A
    Study of lightening pattern
  • B
    Study of temperature variation
  • C
    Study of climate
    Correct
  • D
    Study of earthquake
10
Lightening is seen little earlier than thunder sound because
  • A
    Light require medium for propagation
  • B
    Light travels faster than sound
    Correct
  • C
    Light moves slower than sound
  • D
    Sound require medium for propagation
11
Which of the following is not caused by an earthquake?
  • A
    Flood
  • B
    Tsunami
  • C
    Landslide
  • D
    Thunder
    Correct
12
The point at which a movement occurred which triggered an earthquake is called
  • A
    Dip
  • B
    Epicentre
    Correct
  • C
    Focus
  • D
    Strike
13
Electrons and protons attracted each other because
  • A
    They are negatively and positively charged
    Correct
  • B
    Both are negatively charged
  • C
    Both are positively charged
  • D
    Both are neutral
14
Waves produced on the surface of earth by tremors are called
  • A
    Transverse wave
  • B
    Seismic waves
    Correct
  • C
    Longitudinal waves
  • D
    Mechanical waves
15
In ancient times, people thought that earthquake and lightening is due to
  • A
    Charging of clouds
  • B
    Brushing of plates of earth
  • C
    Wrath of god visiting them
    Correct
  • D
    Pollution of air