Franklin ’ s Famous Kite Experiment

1. Franklin’s Famous Kite Experiment 舒心英语 世界编辑

2. Franklin Lightning Kite These three are different things . Can they be relative ? Franklin did a kite experiment to prove that electricity and lightning are the same .

3. Franklin’s Famous Kite Experiment

4. What’s a kite usually made of ? paper wooden sticks kite string

5. What’s Franklin’s kite for the experiment made of ? silk handker-chief wooden sticks silk ribbon kite string key sharp metal

6. What are needed to do Franklin’s kite experiment ? Silk Kite Kite experiment Bad Weather Key Condenser Shed

7. Franklin’s Famous Kite Experiment to attract lightning , to last longer in bad weather. a silk kite a key to direct electricity forwards the condenser bad weather No bad weather,no lightning. a condenser to store electricity to keep himself and his tools dry so that he himself would not be hit by the lightning a shed

8. Franklin’s Famous Kite Experiment To build the frame of the kite by making a small cross wooden sticks a string to control the kite by tying a long string to the cross a sharp piece of metal to pull the electricity from the thundercloud to stop the kite from flying away without touching the charged string a silk ribbon

9. True or False statements : • In 1752 scientists already knew what electricity is . • 2. Franklin was helped 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 . Post-reading T ( ) F ( ) F ( ) T ( ) F ( )

10. II.Answer the following questions : 1. Was the kite experiment done by Franklin in June 1752 successful ? 2. Why did Benjamin Franklin do this experiment with the kite ? 3. Why is it better to make the kite of silk than of paper ? 4. Do you think Franklin’s experiment dangerous ? Explain .

11. Was the kite experiment done by Franklin • in June 1752 successful ? 1. Yes , very successful . 2. Why did Benjamin Franklin do this experiment with the kite ? He wanted to prove that electricity and lightning are the same . 3. Why is it better to make the kite of silk than of paper ? A silk kite will last longer in bad weather than a paper one . 4. Do you think Franklin’s experiment dangerous ? Explain . 4. Yes , very dangerous . Because if something went wrong , he could be killed by the lightning .

12. III. The pictures below show how Franklin did his experiment . Pick out the correct ones . (2) (1) (3) (4)

13. Consolidation Silk handkerchief condenser wooden sticks silk ribbon Kite experiment kite shed key string a sharp piece of metal bad weather

14. Franklin’s Famous Kite Experiment to show that lightning and electricity are the same . silk handkerchief, wooden sticks , a string , a sharp piece of metal , a key , a silk ribbon ,a condenser , a small shed , a thunderstorm with lightning The electricity stored in the condenser can be used to do other experiments , which proves that lightning and electricity are the same .

15. Homework Homework A Report Of the Kite Experiment

16. Thank you ! Good-Bye!