Franklin's Famous Kite Experiment

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Unit 16 Reading
Franklin's Famous Kite Experiment
If you wont be forgotten after death, either
write things worth reading, or do things worth
the writing. -------------
Benjamin Franklin
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Warming up Do you know ?
Some scientists in the 18th 19th centuries
Physics Medicine Chemistry Biology

Florence Nightingale
Watson Crick
DNA
Madame Curie radium (?) radioactivity(??)
Charles Darwin evolution(??)
pie charts (????????)
Isaac Newton gravity (??)
Carl Linnaeus naming plants
Mendeleyev periodic table of elements
(?????)
Louise Pasteur germs (??)
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(No Transcript)
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What can you think of
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Bemjamin Franklin
(1706-1790)
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Do you know about Franklin (1706-1790)
He was born on Jan. 17, in Boston
Massachusetts. He wasnt very good at math when
he was young. He had only less than 3 years
of school education. He was curious and loved
to learn about new things. He invented
the lightning-rod(???). He helped to found a
new nation --- USA. He helped write the
Declaration of Independence(????). He was
an inventor, a writer, a scientist, a
businessman and a world-famous
statesman(???).
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Listen, read, then decide true or false
In 1752 scientists already knew what electricity was.
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 flying away.
Skimming
T
F
F
T
F
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Which ones are correct?
Scanning
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Qs Why did he do this experiment with a
kite? Why did he make the kite of silk,
not paper? Is this experiment dangerous?
Why? What did this experiment prove?
This proved that lightning and electricity are
the same.
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Read discuss
to prove lightning electricity are the
same
purpose
what\do
built a strong kite
when\do
in bad weather
got charged, and felt electric shock
Franklins famous kite experiment
what\ happened
result
proved the idea
things\ needed
a kite, a key, some bad weather, a condenser

• fix a sharp piece of metal
• 2. fasten a key to the end of the
  long string
• 3. tie a silk ribbon to the string

steps
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Franklins kite experiment
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1.What did he do, after he
had realized that he could use a kite to
attract lightning? Having realized that he
could use a kite to attract lightning, he
decided to do an experiment. (After he had
realized ------, he decided -------.) What
did you do, after you had found no buses?
Having found no buses, I decided to take a taxi.
Useful expressions in the text
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2. What will you have, if you tie the
corners of the handkerchief to the points of the
cross? Tie the corners of the handkerchief
to the points of the cross, and you will have a
nice strong kite. What will you say, if your
friend will be late? Hurry up, and you will
be on time. Hurry up, or you wont be on
time.
Useful expressions in the text
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Useful expressions in the text
3.What is the use of the silk
ribbon? This ribbon will protect you from the
electricity. It will prevent the electricity
from hurting you. Why do you like to wear hats
on summer days? A hat will protect us from the
sun. A hat will prevent the sun from hurting
us.
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Things needed to make a kite
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How to make the kite?
Build
Tieto
Addto
Tieto
First, fix
Second, fasten
Third, tie
Fourth, fly
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In order to prove
that ______ are the same, Franklin built a
strong _____. When the ____ came, he did the ____
by using his ____ and condenser. He found
the string was ____ and he could feel a light but
very clear ___. So he ___ a great deal of ___ in
the condenser. This proved _____. To do the
___, ___ are needed a __, a __, some___ and a
condenser. The next _____ are very
important. 1, fix a sharp piece of _____.
2, fasten a ____ to the end of ___. 3, tie a
____ to the long string.
Fill in retell the text
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Homework writing
(Kite) Experiment Report





Title
Experimenters name
Purpose
Procedure
Results
Conclusion
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Knowledge is power.
-------- ( F. Bacon ??) Knowledge is a
treasure, but practice is the key to it.
-------- (
Fuller ??) Genius is 1 inspiration and 99
perspiration. ------- (T.
Edison ???)
Good-bye!