What precautions would you take if lightning occurs while you are outside the house?
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0
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1115
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March 22, 2018
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Explain why a charged halloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon
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0
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560
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March 22, 2018
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What should you do during an earthquake?
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0
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604
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March 22, 2018
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Explain how lightning takes place
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0
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1829
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March 22, 2018
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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
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0
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1258
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March 22, 2018
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Explain why it is safer to use a wireless telephone instead of a landline telephone during lightning
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0
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2719
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March 22, 2018
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Suggest three measures to protect ourselves from lightning.?
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0
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629
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March 22, 2018
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Name the scale on which the destructive energy of an earthquake is measured
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0
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3645
|
March 22, 2018
|
Explain why a charged body loses its charge if we touch it with our hand
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0
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6563
|
March 22, 2018
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Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain
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0
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1408
|
March 22, 2018
|
The strips of an electroscope diverge when a charged body is brought in contact with the metal clip. Now the clip is touched gently by our hand. What will happen to the strips? Explain
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0
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3027
|
March 22, 2018
|
Negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge
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0
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2142
|
March 22, 2018
|
Explain how does lightning conductor protects a building from getting struck by lightning
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0
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867
|
March 22, 2018
|
You might have observed on a dry day that when you touch the screen of a television or computer monitor (with picture tube), you get a slight shock. Why does it happen?
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0
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3536
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March 22, 2018
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If the materials used for constructing a building were good conductors
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0
|
617
|
March 22, 2018
|
Identify the lightning conductor and the copper plate in the figure given below
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0
|
1872
|
March 22, 2018
|
If air and cloud were good conductors of electricity, do you think lightning could occur?
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0
|
3813
|
March 22, 2018
|
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
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0
|
2019
|
March 22, 2018
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(a) Name the agency responsible for making quake proof houses?
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0
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2496
|
September 16, 2017
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(a) Why do dry hair stand on when combed with a plastic comb?
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0
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2344
|
September 16, 2017
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Name the device used to secure tall buildings from lightning. Explain
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0
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2097
|
September 16, 2017
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If your friend is struck by lightning, how will you help him?
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0
|
1040
|
September 16, 2017
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During a thunderstorm, which places are unsafe if you are outside?
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0
|
674
|
September 16, 2017
|
During a thunderstorm which places are safe?
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0
|
704
|
September 16, 2017
|
What steps should be taken to protect yourself in case of an earthquake
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0
|
637
|
September 16, 2017
|
Describe with the help of a diagram an instrument which can be used to detect
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0
|
6778
|
September 16, 2017
|
Suppose you are outside your home and an earthquake strikes
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0
|
5147
|
September 16, 2017
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Is it true that a charged object always attracts an uncharged object
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0
|
877
|
September 16, 2017
|
(a) What will you observe in Figure-I?
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0
|
1474
|
September 16, 2017
|
Why the gold leaves in an electroscope
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0
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1729
|
September 16, 2017
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