精品课件五年级英语kite

澄海中学： 许楚茹 UNIT 16 UNIT 16 SCIENTISTS AT WORKSCIENTISTS AT WORK Alexander Bell Match the scientists with their contributions. Thomas Edison Charles Darwin Madame Curie Newton Einstein John Snow Gravity; Newton Laws Radium; Radioactivity Evolution Radio; Electric bulb spread of disease Energy equivalency; Relativity Benjamin Franklin FRANKLINS FAMOUS KITE EXPERIMENT Before reading ( A or D ) Topic After reading ( T or F ) 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 T F Franklins famous kite experiment Part 1(para1): Introduction of Franklins experiment. Question: What is the main idea of this paragraph? Part2(para2-3): The process of the experiment. 1.Arrange the following in the correct order: a.Collected and stored electricity in the condenser. b.Felt an electric shock. c.Built a kite d.Went to a shed in the fields. e.Flied the kite. cdeba 2.What conclusion can we make from this experiment ? Franklins famous kite experiment 1.The materials needed for the experiment: Part 3: Kite experiment A kite A key Bad weather condenser Two pieces of light wood A handkerchief A tail A long string A piece of metal A silk ribbon A shed 2.Choose the right things that we should do( ) A. Fix a piece of metal to the long string. B. Fasten a key to the end of the long string. C. Tie a silk ribbon to the string. D. Fly the kite after a thunderstorm occurs. E. Stand in the open air. F. Keep the silk ribbon dry. G. Take care that the string does not touch the house. Part 3(para4-6): The tips of doing the experiment BCFG Question : Do you think Franklins experiment was dangerous? Explain. Fill in the form of science report : Title Experimenter s name Purpose Materials Procedures Results conclusion Kite Experiment Benjamin Franklin To show that lightning and electricity are the same some wooden stick, a handkerchief, rope, a piece of mental, a silk ribbon, a key, a condenser,a small shed , a thunderstorm with lightening. 1.make a silk kite; 2.fix a piece of metal; 3.fasten a key;4.tie a silk ribbon; 5.fly the kite; 6.collect and store the electricity. successful It proves that lightning and electricity are the same Discuss in groups : describe a simple experiment. 版权声明 本ppt为网络收集，有任何疑问请及 时和本人联系，我将在第一时间做 出处理。如有侵