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CHAPTER 7 ELECTRICITY SAFETY
Did You Know?...
The wire in a light bulb gets so hot that it glows
A flash of lightning has a voltage of white and gives off light. The most powerful
100 million volts. A torch battery has a searchlight ever, was made during World War 2.
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voltage of 1 /2 volts. It was as bright as 2,700,000,000 candles.
The Ancient Greeks were the first to discover The human body makes its own electricity and At night, when popular TV programmes
static electricity. They noticed that if they uses it to send messages to and from the brain. end, the demand for electricity rises sharply.
rubbed the side of a piece of amber, it would These electrical messages can travel at speeds This is because everyone gets up to put the
pick up pieces of straw and dust. of up to 288 kilometres per hour. kettle on!
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