教学ppt课件 高一（下）Unit22课件.pptVIP

NEVER GIVE UP -----Amanda Pierce I know you’re going to make it. It may take time and hard work. You may become frustrated, And at times you’ll feel like giving up. Sometimes you may even wonder if it’s really worth it. But I have confidence in you, And I know you’ll make it, if you try. A poem After-class activities: 2.Search more scientists and their famous experiments. Share them! 1. Describe Franklin’s kite experiment. 16 He discovered why all things fall down to earth. Gravity Newton Charles Darwin (1809-1882) Evolution The origin of species Po Ra Madam Curie (1867-1934) Radioactivity Einstein When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute, and it’s longer than an hour. That’s relativity. Einstein The theory of relativity Franklin’s Famous Kite Experiment Benjamin Franklin (1706-1790) Do you know? He was born on January 17, in Boston and was the tenth child and youngest son of the family. His father was a candle maker. 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.(避雷针) He helped set up America’s first city hospital. He helped to write the Declaration of Independence. He was a successful businessman, an inventor, a writer, a scientist and a world-famous statesman. Eat to live, and not live to eat. ----Benjamin Franklin Well done is better than well said. ----Benjamin Franklin Skimming ---Which of the following are mentioned? A. the purpose of the experiment B. the materials of the experiment C. the danger of the experiment D. the results of the experiment E. the procedure of the experiment (Para.2) (Para.4) (Para.3) (Para.4-6) 1.In 1752, scientists already knew what electricity is. 2.Franklin was helped by a friend to do th