高中英语富兰克林的风筝实验.ppt

1、2020/8/4,该课件由【语文公社】友情提供,Franklins Famous Kite Experiment,2020/8/4,该课件由【语文公社】友情提供,Franklins Famous Kite Experiment,2020/8/4,该课件由【语文公社】友情提供,A brief introduction of Franklin,Benjamin Franklin (17061790),2020/8/4,该课件由【语文公社】友情提供,1.In 1752 scientists already knew what electricity was.,2.Franklin was helpe

2、d by a friend to do the experiment.,3.Franklin made the kite of silk because wet silk does not conduct electricity,4.A condenser was used in the experiment to store electricity.,5.The key tied to the string was put into the door to stop the kite from flying away.,True or False:,F,F,T,F,T,2020/8/4,该课

3、件由【语文公社】友情提供,Questions,Why did Franklin do this experiment? What happened during the experiment? Whats the results of the experiment? What do we need to do the experiment? How can you make a kite ? Why is it better to make the kite of silk than of paper ? What are the next three steps after you make

4、 a kite ? What should be paid attention to when it was being done?,2020/8/4,该课件由【语文公社】友情提供,2020/8/4,该课件由【语文公社】友情提供,How can we make a kite? _the _of the kite by making a small cross of two pieces of_ _. The pieces should be just long enough to _the corners of the handkerchief. _ the corners of the ha

5、ndkerchief _the points of the cross. _a tail _the frame and _a long string_the cross so that you can _the kite.,Build,frame,light wood,reach,Tie,to,Add,to,tie,to,control,2020/8/4,该课件由【语文公社】友情提供,paper,wooden sticks,string,kite,2020/8/4,该课件由【语文公社】友情提供,The next three steps are very important. First, _a

6、 very sharp piece of _,pointing a foot or more. Second,_a key to the end of the long string. Third,_a silk ribbon _the string, just above the key. This ribbon which must not_ _,will_you _the electricity.,fix,metal,fasten,tie,to,get wet,protect,from,2020/8/4,该课件由【语文公社】友情提供,string,sharp metal,key,kite

7、,wooden sticks,silk ribbon,Condenser,2020/8/4,该课件由【语文公社】友情提供,Instructions,A small cross of two pieces of light wood. Tie the corners of a handkerchief to the points of the cross . Add a tail to the frame . Tie a long string to the cross. Fix a sharp piece of metal to the top of the longer stick of t

8、he cross. Fasten a key to the end of the long string. Tie a silk ribbon to the string. Connect a condenser to the end of the string.,2020/8/4,该课件由【语文公社】友情提供,The making process (过程),2020/8/4,该课件由【语文公社】友情提供,Introduction of the experiment.,The process of the experiment,Tips of doing the experiment,Para

9、1,Para2-3,Para4-6,Main idea,2020/8/4,该课件由【语文公社】友情提供,Discussion,Do you think Franklins experiment dangerous ? Why? What can you learn from Franklin?,2020/8/4,该课件由【语文公社】友情提供,Kite experiment,Benjamin Franklin,Show that lightening and electricity are the same,A thunderstorm with lightening,The electricity stored in the condenser can be used to do other experiments,Homework: Experiment Report,Two pieces of stick