unit4_ Astronomy reading

Para5
1 spread 2. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 3. As a result of this, many scientists believe the earth may become too hot to live on. 4. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
I felt lonely and life was dull at that time.
︶ ︶
︵
Part2 (para4~5) How the life developed 1.Make a timeline of the development of life 2.Why did the plants grow before the animals came? 3.Why is it wrong in films and stories to show dinosaurs and people together?
1. small plants
On surface of water
2. Early shellfish and
all sorts of fish
4. land animals
insects (on land) amphibian (on land and in water)
green plants 3. on land
2. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acid into the oceans and seas. 3 make it possible for life to develop
Before life appeared.
Para.3 The importance of______ for life water
Para.4
The_______________ of plants and animals development
humans Para.5 The arrival of _________ and their effects on the earth
Different lives developed.
Part1 (para1~3) Before life appeared
• According to a widely accepted theory, how did the stars form? • How did the earth’s atmosphere form?
Para4
1 on the surface of the water 2 fill the oceans and seas with oxygen 3 live on land as well as in the water 4 produce young by laying eggs 5 the age of the dinosaurs 6 remain a mystery 7. This disappearance made possible the rise of mammals on the earth.
Unit 4 Astronomy: the science of the stars
How life began on the earth
theory A________ about how the universe was Para.1 formed formation Para.2 The__________ of the earth
3. What is even more important is that as the earth cooled down, water began to appear on its surface.
Para3
1. It was not immediately obvious that water was to be fundamental to the development of life.
With so many friends on me, I was happy.
︵ ︵
︶
Humans developed new ________ of growing, means hunting and moving around. As time went by they covered the earth. Now too muchcarbon dioxide _______ has been putting into the atmosphere which __________, prevents heat_____ escaping from the earth into ________ from global warming space. As a result, the problem of ______________ occurs. Whether life will continue on the earth for depend on millions of years to come will ___________ whether this problem can be solved.
Now, I’ m worried about the future of myself and humans…
︹
According to the pictures, have a try to retell the development of life.
Suppose you were the earth, what would you advise humans to do? Write a letter to the human being.
The earth was just a cloud of dust whose future is _________ after the “Big Bang”. Then the dust uncertain began to settle into a _______ ball which is so solid ________ andexploded loudly with fire and rock, to _______ violent be in time to produce many things, which make the earth’s ___________. As the earth cooled down, atmosphere ________ began to appear and people think it is water important for the beginning of life. It allowed the harmful earth to dissolve ________ gases. Then life began to develop.
The presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This produce a chain reaction which made it possible for life to develop
3. Why was the earth different from the other planets? Because the water on other planets had
disappeared later.
4. What a role the water played in the development of life?
Nobody understood plants were the start of multiplied changes. They ___________ and filled the first oceans and seas with oxygen. This encouraged the development of early shellfish and fish. Land _____________ animals such as insects, amphibians, reptiles and dinosaurs and so on followed after the first green _________ plants appeared. Dinosaurs disappeared, which made possible the rise of _____________ on the mammals earth. Then small clever animals ____________ all spread over the earth.
Para1
1 a widely accepted theory 2 begin with
3 in all directions
Para2
1. 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. 2. The earth became so violent that it was not clear whether the shape would last or not.
• Why was the earth different from the other planets?
• What a role the water played in the development of life?
1. According to a widely accepted theory, how did the stars form? The universe began with a “Big Bang” that threw matter in all directions, then atoms began to form and combine to create stars. 2. How did the earth’s atmosphere form? The earth was so violent. It exploded loudly with fore and rock to produce carbon, nitrogen, water vapor and other gases, which were to make the atmosphere.
5. forests
reptiles (huge animal-dinosaurs)
6 . Mammals--clever aniants grow before the animals came? Because plants provide oxygen for animals to breathe. 3. Why is it wrong in films and stories to show dinosaurs and people together? Because dinosaurs died out long before human beings developed on the earth.