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Answer in your own words.
How are charges generated?
Concept: undefined >> undefined
Answer in your own words.
In the lightning conductor, what provision is made for spreading the electricity into the ground?
Concept: undefined >> undefined
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Answer in your own words.
Why do farmers stick an iron staff into the ground while working in the field in rainy conditions?
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Answer in your own words.
Why is lightning not seen every day during the rainy season?
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What is the damage caused by lightning?
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How will you create awareness to prevent lightning?
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A magnetic field can pass through ______ and ______.
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Explain with the help of a diagram how the intensity and direction of the magnetic field of a bar magnet can be determined.
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Give detailed information about how the merchants of olden times used a magnet while travelling.
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Answer the following question in your own words:
Does the shadow really vanish in the zero shadow condition?
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Write an answer to the following question in your own words.
What is meant by fossil fuel?
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Write an answer to the following question in your own words.
What are fossil fuel types?
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Write an answer to the following question in your own words.
Why should we prevent the wastage of fuel used for vehicles?
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Write an answer to the following question in your own words.
Name the two important stages in the process of obtaining metals from ores.
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Complete the flow chart.

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What are the remedial measures for the following calamity:
Lightning strike
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Write an answer to the following question in your own words.
What are the measures to prevent loss of life due to lightning?
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For construction purposes ______ cement is the most commonly used cement.
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What are the ingredients of cement?
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What will happen if cement is not used in making concrete?
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