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Charles Goodyear




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Charles Goodyear

�Pick the correct word option.
Billions of people around the world today ride and drive 1-(about/on/by) on rubber tires.�We all owe an enormous debt to Charles Goodyear.

����������� Rubber was known long before the 2-(era/time/period) of Mr. Goodyear, but it had serious 3-(comebacks/drawbacks/troubles). In cold weather it would become hard and crack. In warm weather it would�become soft,�sticky and 4-(take off/send off/give off) a bad odor.

����������� Many people had tried to find ways to make rubber into a more 5-(satisfactory/better/exemplar) material and Charles Goodyear was one of them. He 6-(carried on/carried out/carried through) hundreds of experiments. He 7-(stirred/mixed/combines) many different compounds and substances with the rubber to see what 8-(happened/affect/effect) they would have.

����������� One day in 1839, while he was working 9-(on/to/about) one of his experiments, he accidentally dropped a 10-(bunch/piece/slice) of rubber on a hot stove. This rubber had been mixed with sulfur. The rubber and sulfur charred 11-(however/due to/despite) they did not burn. When Goodyear 12-(tried with/tried out/sent out) this rubber combination, he found that it was 13-(best/better/finer) than any other rubber he had seen. It did not get sticky and 14-(give off/get off/set off) a bad smell when it was 15-(cooled/warmed/wet). Cold did not make it crack. The sulfur and the heat 16-(together/altogether/one another) had changed the rubber in some way.

����������� Goodyear�s method of 17-(handling/mixing/preparing) rubber is called �vulcanization�. This word comes from �Vulcan�, the Roman God of Fire.

����������� Charles Goodyear did not make a 18-(money/fortune/bargain) from his discovery. In fact, at one point in his 19-(live/lives/life), he was put into debtor�s prison and when he died in 1860, he was 20- (already/still/yet) deeply in debt.

True or False

1.������ Charles Goodyear was the first person to discover rubber.

2.���� He was one of the few people who experimented with rubber.

3.���� Rubber in hot weather cracks and lets off a foul odor.

4.���� Goodyear experimented heavily with rubber and different substances.

5.���� Charles� new rubber compound is resistant to cold and heat.

6.���� Vulcanized rubber was discovered by accident.

7.���� Vulcanized rubber burns when sulfur is mixed with it.

8.���� Charles Goodyear died a poor man.

Now listen to how Rubber bands are made!!

�1. How many years have the brothers been making their huge rubber band ball?

2. How many tonnes of rubber bands have they used so far?

3. Which is more elastic synthetic rubber �or natural rubber �?

4. What type of climate do rubber trees favour?

5. How deep is the cut�used to extract the latex from the tree? It's �milimetres.

6. How much latex does a tree normally give each time?

7. How long is the latex heated for in the ovens?

8. Hot Springs, Arkansas is the Home Town to which famous person?

9.Why does the man like his rubber uniform?

10. Do some people like the feel of rubber clothes? yes � no

11. What's the name of the process that uses sulfur to change rubber?

12. How many rubber bands are produced a minute?