I. One of the inventions made in the world of science and technology is the telephone. This instrument has become an important part in our daily life The word "telephone " comes from two Greek words" tele " and " phone". These words mean "far" and "sound". The telephone uses electricity to carry sound over distance. So you see, the two Greek words tell us exactly what the instrument does. Since its invention by Alexander Graham Bell in 1876, the design of the telephone set has changed greatly. However, the way the telephone works is still the same. I. What has become an important part in our daily life? 2. What do the words " tele" and" phone " mean? 3. How does the telephone carry sound over a distance? 4. Who invented the telephone? 5. When was the telephone invented? 6. Has the design of the telephone set changed a lot since its invention? 2.Alexander Graham Bell was born in Scotland. He emigrated to Canada first and then to the USA in 1870s In America, he worked with the deaf-mutes at Boston University. Soon, Bell started experimenting with ways of transmitting speech over a long distance. He worked with Thomas Watson, his assistant. Bell and Watson conducted many experiments. He successfully demonstrated his invention to the public at countless exhibitions, he invented the telephone. By 1877 the first telephone was in commercial use. 1. Where was Alexander Graham Bell born ? 3. Who did Bell work with at Boston University? 4. What did Bell invent ? 5. Did Bell conduct many experiments in America? 6. Where did he successfully demonstrate his invention? 2. Where did he emigrate first ?
. 1. Where was Alexander Graham Bell born ?
In Scotland
2. Where did he emigrate first ?
He emigrated to Canada first
3. Who did Bell work with at Boston University?
Thomas Watson
4. What did Bell invent ?
The telephone
5. Did Bell conduct many experiments in America?
Yes, he did
6. Where did he successfully demonstrate his invention?
At the countless exhibitions
