Unit 3 Deveoloping ideas Language points 课件-2022-2023学年高中英语外研版（2019）必修第三册

Unit 3 The World of Science Who is he? Benjamin Franklin What made him famous? Founding Fathers of the US Declaration of Independence leading author, printer, publisher, diplomat, scientist and inventor. 1. Read the short introduction to Benjamin Franklin and share any other information you know about him? Benjamin Franklin (1706-1790) was one of the Founding Fathers of the United States and helped draft the Declaration of Independence. Apart from being a successful statesman, he was also well known as a leading American author, printer and publisher, successful diplomat, creative scientist and inventor. His Famous Experiment string Process Read the passage and find out what Franklin’s experiment aimed to prove. Franklin’s experiment aimed to prove that lightning was a form of electricity. Read the passage and fill in the experiment report. Experiment The kite lightning experiment Aim Material Procedure Conclusion Lightning was a form of electricity. A kite with a string and a metal key First, Franklin flew a kite with a string and a metal key. Then, when a flash of lightning hit the kite, electricity was conducted through the string to the key. Finally, touching the key, Franklin got an electric shock. To test if lightning was really produced by electricity. Number the statements to show how people's attitudes towards Franklin's experiment have changed. Franklin’s spirit of scientific exploration is still considered an inspiration. People are amazed at and inspired by Franklin’s experiment. Scientists question what really happened in Franklin’s experiment. 1 3 2 Look through the passage and answer the questions. 1. What’s the meaning of “… if Franklin had actually touched the key, he would certainly have died from the electric shock.” 2. Thus how much is true in this experiment? He didn’t touch the key. Flying the kite and the kite was hit by a lightning may have happened, but Franklin didn’t touch the key. 1) Do you think it matters t