The process of transfer of charges from a charged object to the earth is called
  • earthing
  • lightning
  • oscillation motion
  • electron movement
The power of an earthquake is expressed on a scale called
  • seismic scale
  • iron scale
  • richter scale
  • large scale
Which instrument is used to measure earthquake?
  • Richter scale
  • Seismograph
  • Polygraph
  • None of these
Which is not a natural phenomena?
  • Earthquakes
  • Cyclones
  • Lightning
  • Earthing
How many types of charges are gained by rubbing objects?
  • 2
  • 1
  • 3
  • 4
Where is the lightning rod attached to protect the building from lightning?
  • On the top of the building
  • On the bottom of the building
  • In the middle of the building
  • All of these
Lightning always follows
  • a thunder
  • rain pour
  • the easiest path
  • a straight path
Tsunami means
  • earthquake
  • floods
  • earthquake under the sea
  • eruption of volcano in a sea
The waves produced on the earth’s surface is called
  • seismic wave
  • longitudinal wave
  • Micro wave
  • Radio wave
Amber is a
  • metal
  • rubber
  • resin
  • sugar
Which is the surest test of charge on a body?
  • Repulsion
  • Lightning
  • Combustion
  • Insulation
Which of the following can be charged with static electricity ?
  • Metal
  • Alloy
  • Insulator
  • Semiconductor
Which of the following occurs during lightning?
  • Acid rain
  • Nitrogen fixation
  • Green house effect
  • Earthing
Which of the following can be charged by rubbing?
  • Ebonite
  • Plastic
  • Amber
  • All of these
When two bodies are rubbed against each other, they acquire
  • equal and like charges
  • equal and unlike charges
  • unequal and like charges
  • unequal and unlike charges
To protect tall buildings from the damage of lightning, what can be done?
  • Not to build tall buildings
  • Install lightning conductors
  • Install many TV antennas
  • Have a roof top garden with tall trees
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