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Unit 4 Astronomy: the science of the stars. brainstorming. What subjects do you learn at school?. Chinese English mathematics physics history. geography physics biology chemistry. geophysics. biochemistry. astronomy biochemistry geophysics medicine. medicine.
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Unit 4 Astronomy: the science of the stars
brainstorming What subjects do you learn at school? • Chinese • English • mathematics • physics • history • geography • physics • biology • chemistry geophysics biochemistry
astronomy biochemistry geophysics medicine medicine __________ the scientific study of treatment of diseases and injures __________ the study of the chemistry of living things _________ the scientific study of the earth’s atmosphere, oceans and climate __________ the scientific study of objects in space, such as planets, stars, comets and “black holes” biochemistry geophysics astronomy
Astronomyis the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it. astronomer
The Solar system • eight planets • many comets • other objects
Earth • 地球 ______ • 木星 ______ • 火星 ______ • 水星 ________ • 海王星_______ Jupiter Mars Pluto F. 冥王星 _______ G. 土星 ________ H. 天王星 _______ I. 金星 ________ Saturn Mercury Uranus Neptune Venus
nitrogen surface The earth’s atmosphere vapour oxygen Theearth’s atmosphere carbon dioxide
How many parts can the text be divided into? Two parts: Part 1 (para 1) Part 2 (para2.3.4) Water made it possible for life begin to develop. The development of living things.
Energetic dust A solid ball Explode atmosphere water
Water made it possible ________________________ for life to begin to develop.
2 1 small plants in water 2 shellfish and all sorts of fish 4 5 4 insects (on land) 3 green plants on land 5 amphibians (on land and in water) 7 8 9 6 forests 7 reptiles (on land) 8 dinosaurs (on land) 9 mammals (on land)
Water ________made it possible for life to begin to develop.
Plants encouraged the development of _____________________________. early shellfish and all sorts of fish
insects Later _____________ appeared. land animals amphibians
When plants grew into forests, ______ appeared for the first time. reptiles
When dinosaurs disappeared, _________ became more important. mammals
small plants grow on the water shellfish & other fish appear plants begin to grow on dry land The development of life A cloud of dust→a solid ball→presence of water→ on the water→shellfish & other fish →plants begin to grow on dry land→insects and amphibians appear→retiles appear→dinosaurs appear→mammals appear insects and amphibians appear retiles appear dinosaurs appear mammals appear
Discussion As a student, what little things can we do for the earth?
Whether life will continue on the earth depends on human beings. Only if we care will we help, only if we help shall all be saved!