Thursday, 4 February 2016

CLASS 6 ENGLISH EUREKA


EUREKA

Ans 1. Hiero was the king of Syracuse. He wanted the biggest crown in the world.

Ans 2. He called the goldsmith to fashion a crown that would make every other king want to possess it. For this he gave ten pounds of pure gold to the goldsmith.

Ans3. The king instructed the goldsmith to put every grain of gold and not to use any other metal with it .

Ans 4. Archimedes was a very wise man in the king's court . Though he found the workmanship of the crown exquisite, he was suspicious of the quality of the gold.It was a brilliant yellow . It did not have the same rich colour as the lump of gold given to him by the king.

Ans 5.The challange before him was to invent a method to measure the purity of the gold used to make the crown without causing the crown any damage.

Ans 6. One morning when Archimedes stepped into the bath tub a quantity of water flowed out of it . He got the idea that if he put Hiero's crown into it , it would also displace a bulk of water. Gold is much heavier than any other metal such as silver or brass. So if the king's crown was of pure gold it would displace less water. If the crown was not of pure gold it would displace a larger bulk. So it was proved that the crown was not pure gold when it was tested.

Ans 7. Eureka means , I have found it. Archimedes suddenly hit upon the idea of testing the purity of gold. In this manner he helped the entire world with his invention. Hence these words have become famous.

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