the science of the stars Unit 4 Astronomy: the science of the stars Period 1 How Life Began on the Earth

astronomer astronaut? Astronomy 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. astronomer astronaut?

An Interview with Yang Liwei Before listening, could you share with us what you know about space travel? Which countries have sent people into space? Three countries have sent astronauts into space: Russia, the USA and China. Only the USA has sent astronauts to the moon. 2. Main idea Yang Liwei talks about the excitement of space travel and the qualifications and experience needed to become an astronaut.

An Interview with Yang Liwei Listen to Part 1 Questions Yang Liwei’s answers When was the most exciting moment? What did he do? What surprised him?

An Interview with Yang Liwei Listen to Part 1 Questions Yang Liwei’s answers When was the most exciting moment? What did he do? What surprised him? When his spaceship lifted off the ground he knew he was really on his way into space He watched all his instruments and stayed calm. The beauty of space

An Interview with Yang Liwei Listen to Part 2 Information on Yang Liwei, the astronaut Education Training Physical qualities Personal qualities

An Interview with Yang Liwei Listen to Part 2 Information on Yang Liwei, the astronaut Education Training Physical qualities Personal qualities He got his degree. He trained for ten years to fly airplanes and then to fly a spaceship. Smaller than 170 cm; less than 70 kg. Calm, hard-working Answer key for Ex. 5:Dreamed, young, wish, true, gradually, opportunity, love

around the earth and the earth goes around the sun. Check your knowledge 1. Copernicus concluded that _______________ ______________________________. 2. There are _____ planets in the solar system, including the earth. 3. The solar system is just a small part of the ________. the moon goes around the earth and the earth goes around the sun. eight What are they? Milky Way, galaxy / universe the solar system

How did the earth come into being? Chinese tale: Pangu created the world Bible: God created the universe Science: The Big Bang Scientists believe that around 15 billion years ago, a huge explosion happened, creating our universe.

How Life Began on the Earth a good title? the development of life / how life began (Para 4,5) the formation of the earth / how the earth came into being (Para 1,2,3)

Page 27 Ex.1 para 1: a widely accepted theory about the formation of the universe 2. the formation of the earth 3. the importance of water for life 4. the development of plants and animals on the earth 5. the arrival of humans and their effect on the earth Ex. 2 10, 7, 3, 8, 4 , 9, 6, 1, 5, 2, 12, 11

True or False F T T F The universe began with a big bang. Water is fundamental to the development of life The appearance of plants make possible the rise of animals on the earth. Dinosaurs die out because of climate change. True or False according to a widely accepted theory,… it remains a puzzle. F the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This produced a chain reaction, which made it possible for life to develop. T T they multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. F

The formation of the earth 1. 2. 3. 4. 5.

Finish the following form. Para 1-3 Finish the following form. a cloud of dust Big Bang combine into a solid ball Explode with fire and rock cool down Atmosphere Water dissolve harmful gases oceans and seas

Fill in the blanks with the proper words. After the _________, the earth was a cloud of __________. Later the dust began to _______ into_______. And then it ________ loudly with fire and rock , which were in time to _________ the water vapour , carbon dioxide, …which were to make the earth’s ____________. As the earth _______ down, _____ began to ________ on its surface. Water had ____________ from other planets or satellites, but it _______on the earth. That made it possible for life to begin to ______ . “Big Bang” dust settle a solid ball exploded produce atmosphere cooled water appear disappeared stayed develop

1.According to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions. The proceedings will begin with a speech to welcome the guests.   大会议程首先 是向来宾致欢迎辞。 TO begin with, she is too young for that kind of job. cf. start with… 以……结束…… end …(up) with…

2, a cloud of dust 3.What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. a cloud of birds

4.They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earth’s atmosphere. The doctor came in time to save her life . Try hard, and you will succeed in time. You will learn how to do it in time. This discovery was to have a major effect on the treatment of heart disease. To be to do 常表示不可避免将要发生的事

与time相关的短语: in no time at times at a time once upon a time on time at one time for the time being from time to time 立刻, 马上 有时 每次; 依次 从前 按时; 准时 暂时 不时地

The spaceship burned up as it entered the earth’s atmosphere. Reducing levels of CO2 in the atmosphere is of great importance. These plants love warm atmospheres. We use music and lighting to create a romantic atmosphere. The children grew up in an atmosphere of violence and insecurity. She told a joke to lighten the atmosphere. There is a smoky atmosphere in the room. the feeling that an event or place gives you u/c /The hotel had a lovely relaxed atmosphere . , an ~ of warmth a carnival atmosphere, peaceful ~ C.（室内的）空气 A.大气（层） B.气氛、环境

5. What is even more important is that as the earth cooled down, water began to appear on its surface. He is too excited; we must do something to make him cool down. 冷静下来 cool him down 6. … but unlike the earth, it had disappeared later. 7, be fundamental to … Hard work is fundamental to success. 适度的运动封健康是绝对必要的。 Moderate exercise is fundamental to good health.    

8. This produced a chain reaction, which made it possible for life to develop. The appearance of plants make possible the rise of animals on the earth. a chain store I find it useless arguing with him. He made it a rule to get up early. He explained to us that he couldn’t help us. He announced to us that he would go abroad next month.

The development of life (para4-5)

survival of the fittest The __________of life development / evolution survival of the fittest animals plants 2____________________ 1________________ shellfish and all sorts of fish small plants in water 4__________ 5__________ insects 3________________ green plants on land amphibians (on land and in water) 7__________ 8__________ 9__________ reptiles (on land) 6_________ forests dinosaurs (on land) mammals (on land)

Fill in the blanks. small plants The arrival of ___________ encouraged the ____________of early ________________________. Many millions of years later __________________ began to appear _________. Later ____________ appeared. Some were________. Others, called __________,were able to live on lands well as __________. When the plants grew into forests, _________appeared for the first time. After they disappeared, _________became more important. They were the last group of animals different because they _________milk from within their bodies. development shellfish and all sorts of fish the first green plants on land land animals insects amphibians in the sea dinosaurs mammals produced

9, on the surface of the water 10. They multiplied and filled the oceans and seas with oxygen… We must multiply our efforts to clear up the mystery.   我们必须加倍努力来澄清这一神秘的事。 Four multiplied by seven is twenty-eight.   7乘4等于28。

11. Others, called amphibians, were able to live on land as well as in the water. 12. After that, some huge animals, called dinosaurs, developed. 13, reptiles appeared for the first time 14, lay eggs 15, the age of the dinosaurs ended 16, all life forms in the past 17, give birth to young baby animals

18. Thus they have, in their turn, become the most important animals on the planet. They, in their turn, made a proposal. 他们接着也提出了一个建议。 The girls called out their names in turn.   那些女孩儿逐一报出自己的名字。

As a result of this, many scientists believe the earth may become too hot to live on. He often tells lies. He is too unfaithful to believe in. 20. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 在未来的几年里 in the years to come = in the coming years

A. Air pollution B. Large population C. Global warming What is the suggested problem caused by human beings in the passage? A. Air pollution B. Large population C. Global warming D. Lack of energy …putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.

Assignment Think about how to solve global warming and make the earth a better place to live on? Finish Ex.1-3 on page 28