Science

Some Natural Phenomena

Question:

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

Answer:

The nature of charges present on the surface of charged balloons are similar. Since like charges repel each other, two charged balloons repel each other. When a charged body is brought near an uncharged body, the uncharged body acquires charges on its surface caused by the induction of charges. The charges are of opposite nature in relation to the charged body. Since unlike charges attract each other, a charged body always attracts an uncharged body. Hence, an uncharged balloon is attracted by another charged balloon.
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Questions and Answers

Some Natural Phenomena

Q 1.

Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon?
Answer

Q 2.

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?
Answer

Q 3.

Suppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself?
Answer

Q 4.

Describe with the help of a diagram an instrument which can be used to detect a charged body.
Answer

Q 5.

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?
Answer

Q 6.

Suggest three measures to protect ourselves from lightning.
Answer

Q 7.

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

Q 8.

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

Q 9.

Sometimes, a crackling sound is heard while taking off a sweater during winters.
Answer