人教 必修三 Unit 4 Astronomy: the science of the stars Reading 课件 （共54张PPT）
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| 名称 | 人教 必修三 Unit 4 Astronomy: the science of the stars Reading 课件 （共54张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 7.3MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2017-05-16 09:14:45 | ||
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课件54张PPT。Unit 4Unit 4
Astronomy:
the science of the starsReadingHOW LIFE BEGAN ON THE EARTHWarming upWhat are the names of the eight
planets that circle the sun?海王星
Neptune水星
Mercury 金星
Venus 地球
Earth 火星
Mars 木星
Jupiter 土星
Saturn天王星
Uranus A Quiz Game 1. How old is the earth?
A. About 3.5 billion years
B. About 4.5 billion years
C. About 5.5 billion years
D. About 6.5 billion years
2. ______ of the earth surface is covered
by water.
A. 20% B. 30% C. 50% D. 70%3. How many planets are there in the Solar System?
A. 6 B. 7 C. 8 D. 9
4. What is the total population of humans on the earth?
A. About 3.5 billion B. About 4.5 billion
C. About 5.5 billion D. About 6.5 billion5. How long does the rotation (自转) of the
earth take?
A. 12 hours B. 24 hours C. a month D. 365 days
6. Which continent is the smallest?
A. Africa B. North America
C. South America D. Oceania
7. On what day is the Earth day celebrated?
A. April 22 B. May 4
C. August 21 D. November 118. Which ocean is the largest?
A. The Pacific Ocean
B. The Arctic Ocean
C. The Indian Ocean
D. The Atlantic Ocean
9. Which country has the largest area?
A. Canada B. China
C. Russia D. U.S.APrediction Look at the pictures. Do you know the topic of this unit?海洋里的细胞开始分裂 登陆爬行动物恐龙Mammals人类的兴起Do you know what it was like before life appeared on earth?1. What do we mean when we say we are studying a subject scientifically? Or what’s the correct attitude towards science?
We should be objective, not superstitious.Answer these questions.2. What’s the correct way to prove a scientific idea?
We should design experiments to test it for several times.
Then we can analyze the results and draw a conclusion at last.3. What are the most important skills we need to be real scientists?
Careful, objective and logical, draw conclusions from the experiments and not impose conclusions on the data.
(impose … on … 把……强加于……)1. The origin of life on earth is a question that interests astronomers. What do you know about it?2. Each religion and culture has its own ideas about how life began on earth. What do you know?
In China, we all know that Pangu separates the sky from the earth and Nvwa made humans.Pangu separates the sky from the earth. Nvwa made humans.Other legends about the beginning of universe.The Biblical AccountDay 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. India
Brahma is the god first represented in the Hindu Triad. He is the creator of the universe and all living beings are said to have evolved from him.▲ Big BangGasNew starsDying starsremnants平面图 太阳系地球大气Read the text quickly and fill in the blanks.
?????? The text mainly tells us the formation of the ________ and the development of ______ on it.?earth?life 1. When did the “Big Bang” happen?
It happened several billion years ago.
2. What form was the earth after the “Big Bang”?
The earth was still just a cloud of dust.Read the passage quickly and answer the questions.3. What made up the earth’s atmosphere after the earth exploded?
Carbon, nitrogen, water vapour and other gases.
4. How did water come into being on the earth?
As the earth cooled down after it exploded, water came into being.
5. What’s the significance of the presence of water on the earth?
It allowed the earth to dissolve harmful gases and acids into the oceans and seas.
6. What was important to the development
of fish?
oxygen.
7. What made possible the rise of
mammals on the earth?
The disappearance of dinosaurs made possible the rise of mammals on the earth.
8. Why are mammals different from all
life forms in the past?
They gave birth to young baby animals
and produced milk to feed them.Read the passage carefully and analyse its structure. Write down the main idea for each paragraph.A widely accepted theory about the formation of the universeThe formation of the earth.The importance of water for lifeThe development of plants and animals on the earthThe arrival of humans and their impact on the earthFill in the blanks in the following form.AtomsviolentatmospherepresenceacidsoxygenshellfishamphibiansReptilesexistedgave birth tocleverdioxideTrue (T) or False (F).
1. The earth appeared before the Big Bang happened.
2. The original atmosphere consisted of nitrogen and oxygen.
3. The main difference between the earth and other planets is that there is water on the earth.
4. Life began in water and then on land.FFTT5. Mammals appeared before the development of dinosaurs.
6. Dinosaurs could give birth to young baby animals and produced milk to feed them.
7. Human beings produce too much carbon dioxide which causes the global warming on the earth.
8. According to the text, human beings would disappear in the end. FFTFHow life began on the earth.“Big Bang”other bodies_______ starsEarth: a cloud of _____atomsdusta solid ______the earth’s ___________other
_____Water: ___________ to the development of lifewater vapour nitrogen carbonextremely small _______ on the
surface of the waterglobegasesatmospherefundamentalplantsearly _________ and all sorts of fishgreen plants on landland animalsinsectsamphibians________huge animals
(dinosaurs)the rise of __________human beingsshellfishreptilesmammalsThink about what you have read and discuss these questions in pairs.1. Why was the earth different from other planets?
Because the water remained on the earth.
2. Why did the plants grow before the animals came?
Because plants provide oxygen for animals to breathe. 3. Why is it wrong to show films with dinosaurs and people together?
Because dinosaurs died out long before human beings developed on the earth.4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it?
The name is Pluto. Scientists now think it is too small to be called a planet.
5. What problem is caused by human beings?
Human beings caused global warming.Speaking What should we do for our earth?You can use the following words or phrases to help you:prevent … from … harmful
global warming carbon dioxide
in turn depend on as a result thus atmosphereWe have only one earth!How life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passage? Find them out and do some research.Homework
Astronomy:
the science of the starsReadingHOW LIFE BEGAN ON THE EARTHWarming upWhat are the names of the eight
planets that circle the sun?海王星
Neptune水星
Mercury 金星
Venus 地球
Earth 火星
Mars 木星
Jupiter 土星
Saturn天王星
Uranus A Quiz Game 1. How old is the earth?
A. About 3.5 billion years
B. About 4.5 billion years
C. About 5.5 billion years
D. About 6.5 billion years
2. ______ of the earth surface is covered
by water.
A. 20% B. 30% C. 50% D. 70%3. How many planets are there in the Solar System?
A. 6 B. 7 C. 8 D. 9
4. What is the total population of humans on the earth?
A. About 3.5 billion B. About 4.5 billion
C. About 5.5 billion D. About 6.5 billion5. How long does the rotation (自转) of the
earth take?
A. 12 hours B. 24 hours C. a month D. 365 days
6. Which continent is the smallest?
A. Africa B. North America
C. South America D. Oceania
7. On what day is the Earth day celebrated?
A. April 22 B. May 4
C. August 21 D. November 118. Which ocean is the largest?
A. The Pacific Ocean
B. The Arctic Ocean
C. The Indian Ocean
D. The Atlantic Ocean
9. Which country has the largest area?
A. Canada B. China
C. Russia D. U.S.APrediction Look at the pictures. Do you know the topic of this unit?海洋里的细胞开始分裂 登陆爬行动物恐龙Mammals人类的兴起Do you know what it was like before life appeared on earth?1. What do we mean when we say we are studying a subject scientifically? Or what’s the correct attitude towards science?
We should be objective, not superstitious.Answer these questions.2. What’s the correct way to prove a scientific idea?
We should design experiments to test it for several times.
Then we can analyze the results and draw a conclusion at last.3. What are the most important skills we need to be real scientists?
Careful, objective and logical, draw conclusions from the experiments and not impose conclusions on the data.
(impose … on … 把……强加于……)1. The origin of life on earth is a question that interests astronomers. What do you know about it?2. Each religion and culture has its own ideas about how life began on earth. What do you know?
In China, we all know that Pangu separates the sky from the earth and Nvwa made humans.Pangu separates the sky from the earth. Nvwa made humans.Other legends about the beginning of universe.The Biblical AccountDay 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. India
Brahma is the god first represented in the Hindu Triad. He is the creator of the universe and all living beings are said to have evolved from him.▲ Big BangGasNew starsDying starsremnants平面图 太阳系地球大气Read the text quickly and fill in the blanks.
?????? The text mainly tells us the formation of the ________ and the development of ______ on it.?earth?life 1. When did the “Big Bang” happen?
It happened several billion years ago.
2. What form was the earth after the “Big Bang”?
The earth was still just a cloud of dust.Read the passage quickly and answer the questions.3. What made up the earth’s atmosphere after the earth exploded?
Carbon, nitrogen, water vapour and other gases.
4. How did water come into being on the earth?
As the earth cooled down after it exploded, water came into being.
5. What’s the significance of the presence of water on the earth?
It allowed the earth to dissolve harmful gases and acids into the oceans and seas.
6. What was important to the development
of fish?
oxygen.
7. What made possible the rise of
mammals on the earth?
The disappearance of dinosaurs made possible the rise of mammals on the earth.
8. Why are mammals different from all
life forms in the past?
They gave birth to young baby animals
and produced milk to feed them.Read the passage carefully and analyse its structure. Write down the main idea for each paragraph.A widely accepted theory about the formation of the universeThe formation of the earth.The importance of water for lifeThe development of plants and animals on the earthThe arrival of humans and their impact on the earthFill in the blanks in the following form.AtomsviolentatmospherepresenceacidsoxygenshellfishamphibiansReptilesexistedgave birth tocleverdioxideTrue (T) or False (F).
1. The earth appeared before the Big Bang happened.
2. The original atmosphere consisted of nitrogen and oxygen.
3. The main difference between the earth and other planets is that there is water on the earth.
4. Life began in water and then on land.FFTT5. Mammals appeared before the development of dinosaurs.
6. Dinosaurs could give birth to young baby animals and produced milk to feed them.
7. Human beings produce too much carbon dioxide which causes the global warming on the earth.
8. According to the text, human beings would disappear in the end. FFTFHow life began on the earth.“Big Bang”other bodies_______ starsEarth: a cloud of _____atomsdusta solid ______the earth’s ___________other
_____Water: ___________ to the development of lifewater vapour nitrogen carbonextremely small _______ on the
surface of the waterglobegasesatmospherefundamentalplantsearly _________ and all sorts of fishgreen plants on landland animalsinsectsamphibians________huge animals
(dinosaurs)the rise of __________human beingsshellfishreptilesmammalsThink about what you have read and discuss these questions in pairs.1. Why was the earth different from other planets?
Because the water remained on the earth.
2. Why did the plants grow before the animals came?
Because plants provide oxygen for animals to breathe. 3. Why is it wrong to show films with dinosaurs and people together?
Because dinosaurs died out long before human beings developed on the earth.4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it?
The name is Pluto. Scientists now think it is too small to be called a planet.
5. What problem is caused by human beings?
Human beings caused global warming.Speaking What should we do for our earth?You can use the following words or phrases to help you:prevent … from … harmful
global warming carbon dioxide
in turn depend on as a result thus atmosphereWe have only one earth!How life began on earth is one of the biggest puzzles that scientists found hard to solve. What other puzzles are hidden in the passage? Find them out and do some research.Homework
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