in die como (paragraph 2) 4 when you mix two or more metals together so that they combine and become a single metal (paragraph 4) 5 pretty or attractive, but not always necessary or useful (paragraph 5) is younger than all the other people there? 2c Discuss the questions with a partner. WORLD GOLD COUNCIL of gold in industry Where is gold used in industry? 1 Gold is used almost everywhere, from our homes to outer space. 4 The second most important use of gold is in teeth. However, pure gold is not used, as it is very soft to use on its own. It is mixed with other metals to make an 'alloy. A typical alloy contains 62-78% gold. Why is it used? 2 Gold has a number of advantages over other metals. It is soft, so it is easy to use. It conducts heat well. It lasts a long time and it is not damaged by the environment. Gold connections are very reliable, so they are used where safety is important. In addition, gold is a popular material in industry because of its special appearance, colour and beauty. How is it used? 3 It is used in a wide variety of ways. The main use is in electronics - computers, pocket calculators, washing machines, televisions, recordable CDs, cars, credit cards and spacecraft. The Columbia space shuttle, for example, used nearly 41 kilograms of gold. Gold is the perfect material for contacts. An ordinary telephone contains 33 gold contacts. In some electronic equipment, very fine gold wires are used to connect different parts of the equipment. Each piece of wire is made of very pure gold (99.99%) and thinner than a human hair. 5 Decorative uses of gold include jewellery, pens and pencils, watches and glasses - even in cooking! It is found in bathrooms, on plates and especially on perfume bottles. The most impressive use of gold is gold leaf. This is an extremely thin sheet of gold. Generally, it is produced by hand and is used by builders, glass makers, artists and chefs. It can be applied to the roofs and ceilings of public buildings, and lasts much longer than paint. MOHAMMAD ISAA MOUSA ABU DEBA E . - Word Qur Tw . docx 7 s = - =: A - Aa | AA == A - . A. Microsoft Translator | || | 15 (1 Read the text and write true or false: 1-Gold is not a popular material in industry. 2-The Columbia space shuttle used nearly forty one kg of gold.( ) 3-There are 23 gold contacts in an ordinary phone. ( 4-Pure gold is not used in teeth. ( 5-There are a lot of decorative uses of gold. ( 2- Complete these sentences with one word from the text: U A .OA 5-There are a lot of decorative uses of gold. ) 2- Complete these sentences with one word from the text: 1-Gold ..............................heat well. 2-Gold connections are very 3-Gold is the ........................ material for contacts. 3-Gold is.......................... with other metals to make an alloy 4-The most ... use of gold is gold leaf