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Some Natural Phenomena

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Published in: Bio Chemistry
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This ppt is related to class 8: Some Natural Phenomena. Here, describe about Some Natural Phenomena of nature and the topic described Electric Charges, Lightning and earthquake.

Sushil K / Patna

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  1. Some Natural Phenomena Like charges repel Opposite charges attract
  2. a) b) c) d) e) f) Electric Charge When two objects are rubbed together they get oppositely charged. Two types of charges- positive and negative charges. like charges repel ad unlike charges attract each other Charges producing by rubbing are called static charges. When charges move they constitute an electric current The process of transfer of charge from a charged object to the earth is called earthing
  3. Lightning a) A flash of bright light produced by an electric discharge between clouds or between clouds and the ground. b) A lightning conductor is a metal rod fixed to an exposed part of a building to divert lightning into the earth. c) Lightning conductors can protect buildings from the effects of lightning.
  4. a) b) C) d) Earthquake Rtcheter scale:- a logarithmic scale, ranging from 1 to 10 for indicating the intensity Of an earthquake. the energy released at the focus Of an earthquake, propagates outwardly. an instrument by which seismic waves Of an earthquake are monitored. a point on the earth above the seismic focus zones:— Earthquake prone areas in the earth's crust.
  5. Give Feedback on this PPT. Thanks For Watching End

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