Q7 of 26 Page 134

Suggest three measures to protect ourselves from lightning. .

Protective measures against lighting are as follows.

1. Stay indoors or in completely closed place. If you are moving in the car than remain there until the lighting is over.



2. Do not touch any conductor of electricity like electric wires, telephone cables, metal pipes etc.


3. Do not take shelter under tree because you may get an electric shock due to water present on leaves of tree which will conduct electricity.



4. Switching off and disconnecting all heavy electrical appliances like Television, Air conditioner etc.


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5

Explain why a charged body loses its charge if we touch it with our hand.

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Name the scale on which the destructive energy of an earthquake is measured. An earthquake measures 3 on this scale. Would it be recorded by a seismograph? Is it likely to cause much damage?

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Explain why a charged balloon is repelled by another charged balloon whereas anuncharged balloon is attracted by a charged balloon?

 9

List three states in India where earthquakes are more likely to occur. .