Great

1
Unit 1
Great scientists
2
Warming up
Do you know any scientists?

• The following is a quiz and lets find out
• who knows the most.

Lets have a competition!
3
Warming up
1.Which scientist discovered that objects in
water are lifted up by a force that helps
them float?
B. Archimedes
C. Thomas Edison
A. Charles Darwin
4
2. Who wrote a book explaining how animals and
plants developed as the environment changed?
C. Charles Darwin
B. Gregor Mendel
A. Marie Curie
5
3.Who invented the first steam engine?
A. Thomas Newcomen
C. Thomas Edison
B. Archimedes
6
4. Who used peas to show how physical
characteristics are passed from parents to
their children.
C. Archimedes
A. Thomas Edison
B. Gregor Mendel
7
5. Who discovered radium?
A. Marie Curie
B. Zhang Heng
C. Newton
8
6.Who invented the way of giving electricity to
everybody in large cities?
A. Stephen Hawking
C. Thomas Edison
B. Archimedes
9
7.Who was the painter that studied dead bodies
to improve his painting of people?
A. Gregor Mendel
C. Marie Curie
B. Leonardo da Vinci
10
8. Who invented a lamp to keep miners safe
underground?
A. Sir Humphry Davy
C. Faraday
B. Thomas Newcomen
11
9. Who invented the earliest instrument to tell
people where earthquakes happened?
C. Watt
B. Zhang Heng
A. Charles Darwin
12
10.Who put forward a theory about black holes?
C. Copernicus
A. Stephen Hawking
B. Archimedes
13
What makes a scientist successful?
14
talented
strong- willed
positive
bright
similarities
strict
hard-working
creative
careful
15
What impress you most in 2003?
SARS
What impress you most in 2003?
infectious
16
What other infectious diseases do you know?
For example When you eat some seafood
You feel
Maybe you have got ________.
Cholera
17
(No Transcript)
18

• infectious diseases
• They can be spread to other people.
• They have an unknown cause.
• They are difficult to cure.
• They need public health care to solve
• them.

19

• Cholera
• It begins in the stomach and a severe case can
  lead to death without immediate treatment.
• And the victims died very quickly from a loss of
  liquid after severe vomiting(??) and
  diarrhoea(??).

20
Skimming
Who was the great scientist in the passage and
what was the deadly disease of its day?

• John Snow
• cholera

21
Read and answer

• Paragraph 1
• 1 Why couldnt the cholera be under control at
  first?
• Neither its cause, not its cure was
  understood.
• True or false1. John Snow was glad to help
  ordinary people.
• 2. John Snow thought cholera would never be
  controlled.

T
F
22
Paragraph 2

• Whats the two theories?
• Which one is more reasonable?

23
Paragraph 34

• John Snow finally proved the theory he
  believed by ________.
• A. gathering information with the help of a map
• B. looking into the source of the water for
  Broad Street and Cambridge Street
• C. separating those who suffered cholera from
  those who didnt
• D. both A and B
• E. both A and C

24
Paragraph 4

• What valuable clue did he get about the cause of
  the disease?

Many of the deaths had no deaths.
25
What method did he use?
Broad Street
Public house
Many deaths happened here.
A map of Broad Street
No death happened here.
The water from the pump was to blame.
26
Paragraph 4

• What might be the cause?

It seemed that the water was to blame for cholera.
27
Paragraph 5

• When the cause was found, what did John Snow tell
  the people do?

To remove the handle from the water pump so it
could not be used.
28
para.67
Careful Reading

1. Where did the woman live and why did she and her
   daughter die?
2. What did their deaths suggest?
3. What measures did John Snow take to prevent the
   disease from spreading?

Away from Broad Street They had drunk the water
from the pump.
The polluted water carried the virus
..suggested thatbe examined were instructed not
to exposeto
29
Read the passage and number these events in the
order that they happened.
John Snow began to test two theories. An outbreak
of cholera hit London in 1854. John Snow marked
the deaths on a map. He announced that the water
carried the disease. John Snow investigated two
streets where the outbreak was very severe. King
Cholera was defeated. He found that most of the
deaths were near a water pump. He had the handle
removed from the water pump.
30
Discussing
Stages in setting out a new scientific idea
draw a conclusion Think of a method
Collect results Make a question Find
a problem Analyse the results Find
supporting evidence
?
?
?
?
?
?
?
31
Homework

1. Read the text and learn the new words by heart.
2. Find more information about cholera and John Snow
   on the Internet.