What precautions would you take if lightning occurs while you are outside the house?
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0
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1134
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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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580
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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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615
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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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1839
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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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1268
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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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2731
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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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639
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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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3655
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March 22, 2018
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Explain why a charged body loses its charge if we touch it with our hand
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0
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6583
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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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1420
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March 22, 2018
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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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3041
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March 22, 2018
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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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2153
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March 22, 2018
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Explain how does lightning conductor protects a building from getting struck by lightning
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0
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877
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March 22, 2018
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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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3543
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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
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629
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March 22, 2018
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Identify the lightning conductor and the copper plate in the figure given below
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0
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1890
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March 22, 2018
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If air and cloud were good conductors of electricity, do you think lightning could occur?
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0
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3826
|
March 22, 2018
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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
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2030
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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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2513
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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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2361
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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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2103
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September 16, 2017
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If your friend is struck by lightning, how will you help him?
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0
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1064
|
September 16, 2017
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During a thunderstorm, which places are unsafe if you are outside?
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0
|
689
|
September 16, 2017
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During a thunderstorm which places are safe?
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0
|
713
|
September 16, 2017
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What steps should be taken to protect yourself in case of an earthquake
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0
|
647
|
September 16, 2017
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Describe with the help of a diagram an instrument which can be used to detect
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0
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6798
|
September 16, 2017
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Suppose you are outside your home and an earthquake strikes
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0
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5163
|
September 16, 2017
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Is it true that a charged object always attracts an uncharged object
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0
|
896
|
September 16, 2017
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(a) What will you observe in Figure-I?
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0
|
1496
|
September 16, 2017
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Why the gold leaves in an electroscope
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0
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1749
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September 16, 2017
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