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प्रश्न
How lightning takes place?
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उत्तर
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Lightning is produced by the discharge of electricity from cloud to cloud or from cloud to ground.
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During thunderstorm, air is moving upward rapidly.
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This air which moves rapidly carries small ice crystals upward.
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At the same time, small water drops move downward.
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When they collide, ice crystals become positively charged and move upward and the water drops become negatively charged and move downward.

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So the upper part of the cloud is positively charged and the lower part of the cloud is negatively charged.
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When they come into contact, electrons in the water drops are attracted by the positive charges in the ice crystals. Thus, electricity is generated and lightning is seen.
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Sometimes the lower part of the cloud which is negatively charged comes into contact with the positive charges accumulated near the mountains, trees, and even people on the earth. This discharge produces a lot of heat and sparks that result in what we see as lightning.
APPEARS IN
संबंधित प्रश्न
Explain why it is not safe to go out with an umbrella when there is heavy rain, lightning or thunder.
Answer in your own words.
How are charges generated?
Answer in your own words.
Why is lightning not seen every day during the rainy season?
During the construction of a building, the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain.
Identify the lightning conductor and the copper plate in the following figure.

If the materials used for constructing a building were good conductors, do you think lightning will strike the building. Will the lightning conductor be still required to be installed in the building?
______ extreme heat will vaporize the water inside a tree, creating steam that may burn out the tree.
______ arrestor is a device used to protect buildings from the effects of lightning.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
