Some Natural Phenomena (Practice Sheet, Class 8)

(1) What is lightning?

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(2) Why earthing of buildings is necessary?

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(3) If you are in forest and a thunderstorm strikes. What will you do to save yourself?

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(4) How earthquakes occur?

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(5) Draw the structure of the earth.

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(6) What precautions should be taken against earthquake at the time of building construction?

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(7) After viewing diagram complete the sentence.

unlike charges attract each other, diagram, some natural phenomena, ncert, class8

 

The balloon and plastic rod have _____________ charge because they _____.

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(8) What instructions will you give to carpenter if you are living in seismic zone?

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(9) Show by a diagram that same charged objects repel each other.

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(10) Fill in the blanks

(i) The destructive earthquakes have magnitudes higher than ___ on the Richter scale.

(ii) _____ is an instrument which is used by the scientists to record seismic waves.

(iii) The process of transferring of charge from a charged object to the earth is called _____.

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Helping Topics

Some natural phenomena

NCERT solution, class 8

Winds, storms and cyclones

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