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unit4 warming up and reading[1]


Time is like the water in a sponge; if you squeeze, you can always get some.

时间就像海绵里的水,只要挤,总还是 有的。

Unit 4 Astronomy: the science of the stars

The Solar syst

em

? eight

planets ? many comets ? other objects

1.Do you know the eight planets that

circle around the sun? (nearest—furthest)

Mercury(水星)

The Roman god of merchants and travellers

Venus(金星)

The Roman goddess of love

Our planet, the earth, is a large ball of rocks and metals covered with water and soil. It is surrounded by a blanket of gases called the atmosphere, has one moon (natural satellite), and as far as we know, is the only planet that produces life.

Mars(火星)

The Roman god of war

Jupiter(木星)

The king of the Roman gods

Saturn

The Roman god of seeds and sowing

Uranus(天王星)

The Greek god of the sky

Neptune(海王星)

The Roman god of the sea

2.What interests you in astronomy? Do you know any questions that astronomers are interested in?
Astronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it.

physics

maths

geography

scientist

physicist

Aristotle
亚里斯多德

Metaphysics
(宇宙哲学)

In 1609 Galileo learned of the invention of the telescope in Holland. Galileo made a series of discoveries using his new telescope Galileo 伽利略

sun-centered theory

Copernicus

哥白尼

Universal gravitation 万有引力

Isaac Newton,
牛顿 1642―1727

The theory of Relativity

Albert Einstein(1879-1955)

爱因斯坦

The theory about black holes

Seismography 地震仪
Invented seismography and the Armillary Sphere (浑天仪) so as to observe the universe and predict earthquake

张衡(78 AD - 139 AD), earliest astronomer in China Later Han Dynasty

Do you know any legend about the origin of life on earth?

Legends in China

Nuwa made human beings

From China: Pan’gu separates the sky from the earth

Pan’gu separated the earth and sky with an ax. After he died, Breath Voice Left eye Right eye Blood Tendon(筋脉) muscles

wind and cloud thunder sun

moon Edges and mountains Arms and legs

rivers roads fields

Hair Teeth and bones
Sweat rains

stars

metals, pearls and jades

Other legends about the beginning of
universe: The Jewish/Christian/Muslim story

The Bible Day 1: God spoke and separated light from darkness creating Day and Night

Day 2: God spoke and separated
the water creating sky and

ocean
Day 3: God spoke and created dry

land

Day 4: God spoke and created the sun, moon and stars Day 5: God spoke and created living creatures in the air and sea Day 6: God spoke and created the land animals and man Day 7: God rested and blessed this day calling it Holy

Read the title and look at the pictures. Predict what the reading will be about.
evolution It is about the ________ of life on earth.

Skimming: (I minute)
1.How is the whole passage organized? (in what order) The passage is written in time order.
several billion years after the “Big Bang” many millions of years later next later about 2.6 million years ago

Do you know the meaning of these words?
Carbon dioxide Oxygen Nitrogen Acids Water vapour

Which one belongs to amphibian? A frog B snake C dinosaur

Live both on land and in water
Which one belongs to reptile? A fish B snake C bird

Cold blood and lay eggs
which one belongs to mammal ? A dinosaur B dog C fish

Give birth to young babies

2. main idea of each paragraph (5 minutes)
Paragraph 1 Paragraph 2 Paragraph 3

A _______ acceptedtheory about widely _______ the beginning of the universe _______ formation The __________of the earth water The importance of _____for life plants The development of ______and animals _________on the earth The arrival of human beings ______________and their impact on the earth

Paragraph 4

Paragraph 5

Scanning: (5 minutes) Put the order of development of life into a timeline. Ex 2 on P27

1.The universe began with a ― Big Bang‖– explosion

2.The earth was a cloud of dust

3.The earth became a solid ball solid liquid
gas

4.Water appeared on th earth

5.Small plants grew on the water

6.Shellfish and other fish appeared

7.Plants began to grow on dry land

8.Insects and amphibians appeared

9.Reptiles appeared

10.Dinosaurs appeared

11.Mammals appeared

12.Clever animals with hands and feet appeared

Read the first paragraph(1 min)
At the very beginning, the earth had no ______ A.dust B.atoms C.water D.matter

Read from Para2—4
1. Why was the earth different from the other planet?

Because the water remained on the earth.
2. Why did the plant grow before the animals came?

Because plants provide oxygen for animals to breathe.
3. Why was it wrong to show films with dinosaurs and people together?

Because dinosaurs died out long before human beings developed on the earth.

Read Para 5
What problem is caused by human beings? They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth.

global warming

The more we do, the more we can do; the busier we are, the more leisure we have. 做得越多,则能做的越多;越是忙碌, 则空闲越多。

putting carbon dioxide into the atmosphere Prevent heat from… As a result…

Global warming

Para2 The formation of the earth
a cloud of dust

violent a _______ solid globe

exploded with fire and rock produced carbon, water vapor and other gases-- atmosphere cooled down—water appeared on its surface

Para3 The importance of water for life

Water is fundamental to the development of life On the other planets like Mars
water disappeared later.

On the earth
What many scientists believe is that the continued presence water allowed earth to _________ ________of dissolve ________ _______ and acids into the harmful gases oceans which produced a ______ reaction chain ________.

Para 4 The development of plants and animals on the earth
the extremely small plants on water shellfish and all sorts of fish green plants on land land animals( insects and amphibians) forests reptiles dinosaurs mammals

How life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passagge?

The disappearance of dinosaurs

To your understanding, what might be the reasons for the disappearance of dinosaurs? Try to convince the other students.

I strongly believe that… What caused the disappearance of dinosaurs remains a mystery, but according to… The reason is that… It is obvious that… There is no doubt that…because…

Good morning/afternoon, I am Dr….

I’m greatly honored to be here to give you
a speech about the evolution of life on

earth.



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