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प्रश्न
Explain how lightning takes place.
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उत्तर
During the development of a thunderstorm, the air currents move in upward direction while the water droplets move in downward direction. These movements cause separation of charges. The positive charges collect near the upper edges of the clouds and negative charges collect near the lower edges of the clouds.
Accumulation of positive charges near the ground also takes place. When the magnitude of collected charges become large, the air cannot resist their flow and as a result, negative and positive charges meet producing streaks of bright light and sound, called lightning.
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संबंधित प्रश्न
The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.
Answer in your own words.
How are charges generated?
Answer in your own words.
In the lightning conductor, what provision is made for spreading the electricity into the ground?
Answer in your own words.
Why do farmers stick an iron staff into the ground while working in the field in rainy conditions?
Write an answer to the following question in your own words.
What are the measures to prevent loss of life due to lightning?
______ is a device that protects building from lightning strike.
Consider the statement given below and choose the correct option.
Assertion: It is safer to stand under a tall tree during lightning.
Reason: It will make you the target for lightning.
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?
Explain why it is safer to use a wireless telephone instead of a landline telephone during lightning.
Lighting rods are made of ______.
During thunderstorms, the air is moving ______ rapidly. This air moves rapidly.
______ extreme heat will vaporize the water inside a tree, creating steam that may burn out the tree.
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.
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.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage. Assertion: It is safer to stand under a tall | tree during 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.
