Natural Phenomena: Lightning and Earthquakes
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Questions and Answers

Why did it take 2000 years for the realization about lightning and sparks to occur?

Scientific discoveries are a result of hard work by many people and can sometimes take a long time.

What did Benjamin Franklin show in 1752?

He showed that lightning and the spark from clothes are essentially the same phenomena.

What happens when you rub a plastic scale?

It can attract paper.

What materials can be used to rub the plastic refill and plastic comb?

<p>Polythene and dry hair.</p> Signup and view all the answers

What objects are called charged objects?

<p>Objects like plastic refill and plastic comb, which acquire a small electric charge when rubbed.</p> Signup and view all the answers

What natural phenomena are discussed in this chapter?

<p>Lightning and earthquakes</p> Signup and view all the answers

What causes lightning?

<p>Accumulation of charges in the clouds</p> Signup and view all the answers

What did the ancient Greeks know about amber and fur?

<p>When amber was rubbed with fur, it attracted light objects</p> Signup and view all the answers

What is lightning compared to on a huge scale?

<p>An electric spark</p> Signup and view all the answers

When does lightning occur?

<p>When the wind blows and shakes the wires</p> Signup and view all the answers

How did ancient people view lightning?

<p>They were afraid of it and thought it was the wrath of gods</p> Signup and view all the answers

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