高一课件16单元Welcome.ppt

,Welcome!,Match Column B with Column A correctly.,Column A Column B Alexander Bell the Theory of Relativity Thomas Edison the first telephone Laite Brothers the electric lamp Madame Curie electricity Franklin the first plane Elbert Einstein the Theory of Gravity Isaac Newton Radium,Pair work,Nobel the inventor of the detonator and set up”Nobel Prize”,Newton the founder of the law of universal gravitation,He was famous for his theory of relativity.,Albert Einstein,18791955,He was an American inventor.,He invented the electric bulb.,Edison,Po,Ra,Radioactivity,Madam Curie (1867-1934),Charles Darwin (1809-1882),Dead-leaf mimic katydid,Evolution,If you would not be forgotten, as soon as you are dead or rotten,either write things worth reading, or do things worth the writing.,Benjamin Franklin (17061790),Do you know?,He was born on January 17, in Boston in Masachusetts, and was the tenth child and youngest son of the family He was curious and loved to learn about new things but he had only less than three years of formal education. He invented lightning rod/conductor. (避雷针) He helped set up Americas first city hospital. He also helped to found a new nation. He helped to write the Declaration of Independence. He was a successful businessman, an inventor, a writer, a scientist and a world-famous statesman.,Benjamins Great invention,Lightning rod,The original one,Experiment :,It shows that rubbing objects can produce electricity.,(physics),Static electricity,Whats the weather like when people are flying kites?,Unit 16 Scientists at work,The second period,Franklins famous kite experiment,Time:,June 1752,People:,Franklin and his son,weather,Thunderstorm, rainy day,purpose,To prove lightning and electricity are the same,The things needed,A kite, a key, some bad weather, a condenser,-What did he see/ do / feel/notice at the beginning of the experiment?,Description (What happened),-How to make a kite?,-When to fly the kite?,-Where to stand?Why?,-What to be taken care of ?,-What will happen ?,-What to do with the electricity?,Description (What happened),-What did he see,He saw some hairs on the string stand up.,-What did he do,He brought his finger close to the key.,-What did he feel,He felt an electric shock.,- What did he notice then,Others followed (Other hairs also stood up.),-What did he do at last,(Collected and stored a great deal of (much) electricity.),-How to make a kite?,sharp piece of metal,One foot or more,Long string,“cross”,tail,Silk ribbon,Instructions: How to do this experiment:,-When to fly the kite?,-Where to stand?Why?,-What to be taken care of ?,When a thunderstorm appears.,Inside a door or under some cover.,Take care that the string doesnt touch the wall or the door.),-What will happen ?,condenser,-What to do with the electricity?,The metal will pull the electricity from the cloud. The kite and the string will become charged and conduct electricity.,Collect and store it in the condenser.,key,ribbon,condenser,shed,Read the following statements and decide if they are true or false. In 1752 scientists already knew what electricity is. Franklin was helped by a friend to do the experiment. Franklin made the kite of silk because wet silk does not conduct electricity. A condenser was used in the experiment to store electricity. The key tied to the string was put into the door to stop the kite from flying away.,T,F,F,F,T,The structure of this passage:,Part1( ):,The description of the experiment,Part2( ):,How to make the kite and how to do the experiment,1-3,4-6,Which of the following sentence can be the best one to describe Benjamin Franklin:,Great hopes make great man. From small beginning come great th