1、,Astronomy：,Unit 4,the science of the stars,Question,CHICKEN or EGG: Which Came First?,Plato 柏拉圖,philosophical proposition哲學(xué)命題,Who am I? Where do I come from ? Where am I headed?,Legends,Where do I come from ?,God,Nuwa,God created the world in six days. God created the first humans Adam and Eve and

2、all the animals in the Garden of Eden.,A Goddess patched(修補(bǔ)) the heaven and created human beings from the clay(粘土).,Whats 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.,Charles Darw

3、in,On the Origin of Species物種起源,It introduced that populations evolve through a process of natural selection.,How life began on the Earth?,Heavenly Bodies,Do you know eight planets in our solar system?,Mercury mkjri,Venus vins,Earth,Mars,Jupiter,Saturn,Uranus jrens,Neptune neptju:n,Reading,How life

4、began on the earth?,Fast-reading,theory,earth,water,life,humans,Fast-reading,P1,P4,P5,The formation of earth,The development of life,Part 1 : P 1 - P 3,The formation of earth,Detailed-reading,Para1: The widely accepted theory Big Bang threw in all directions. Atoms Stars and other bodies.,matter,for

5、med and created,Detailed-reading,Para 2： What was the earth like, after the Big Bang? What happened, after the earth formed? What did the water vapour and gases form? What appeared as the earth cooled down?,1.What was the earth like, after the Big Bang?,a cloud of dust a solid globe,2.What happened,

6、 after the earth formed?,exploded produced,with fire and rock,3.What did the water vapour and gases form?,the earths atmosphere,4.What appeared as the earth cooled down?,Water appeared.,Detailed-reading,Para 3：,Water remained on the earth.,Earth can dissolve harmful gases and acids into oceans with

7、it.,2.Why is water so important for the life?,1.Why was the earth unlike other planets?,Part 2 : P 4 - P 5,The development of life,small plants,shellfish & fish,land animals,amphibians,dianosaurs,insects,reptiles,mammals,clever animals,Para 5,What harmful thing do human beings do to the earth ?,We p

8、ut too much CO2 into the atmosphere.,What will happen when too much CO2 are released ?,The sad ending of the earth,Protecting our planet starts with you.,1.Reduce, reuse, and recycle. Cut down on what you throw away. 2.Volunteer. Volunteer for cleanups in your community. 3.Shop wisely. Buy less plas

9、tic and bring a reusable shopping bag. 4.Plant a tree. Trees provide food and oxygen. They help save energy, clean the air, and help combat climate change. 5.Bike more. Drive less. 6.Educate. When you further your own education, you can help others understand the importance and value of our natural resources.,What should we do to protect the earth?,Firstly, in order to ., we should . Secondly, it is a