miércoles, 28 de octubre de 2009

Electric sparks

1. why do clouds become charged? Tiene pequeños cristales de agua y al frotarse los cristales se cargan de energía.

2.what is a flash of lightning? When is lightning produced?

The lightning is a sound that to produced the clouds when discharged electrical. To produced when to much energy electrical.

3.what special precautions are taken in factories using flammable meterials ? why are these precautions taken ?

But in a factor using flammable materials ,even the smallest spark can produce a n explosion .that’s why workers have to wear special shoes and clothes which don’t build up charges.

4.have you ever produced sparks? If so , explain what happened.

Cuando toque el tv me paso electricidad por que el tv y yo tenemos energía.

5. Aereoplanes become charged up when they fly through clouds . Explain why.

6.try to find out : a) what causes a clap of thunder b) why tall buildings have lightning conductors

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