Advertisements
Advertisements
Question
Explain how lightning takes place.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
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.
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.
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?
Answer in your own words.
Why is lightning not seen every day during the rainy season?
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.
If air and cloud were good conductors of electricity, do you think lightning could occur? Explain.
Identify the lightning conductor and the copper plate in the following figure.
Explain why it is safer to use a wireless telephone instead of a landline telephone during lightning.
______ extreme heat will vaporize the water inside a tree, creating steam that may burn out the tree.
Who discovered static electricity or lightning in clouds?
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: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
