必修五Unit1Copernicusrevolutionarytheory含语言点.ppt

Using language (1) Nicolaus Copernicus born: in Poland in 1473 died: May 24, 1543 He was one of the first scientists to use mathematical observation to collect information. He believed the sun is the center of the universe and the earth and other planets went around it. Nicolaus Copernicus’ tombstone Skim the text and draw the two theories of the universe with the following pictures. sun earth Before Copernicus’ theory Showing Copernicus’ theory sun earth Before Copernicus’ theory Showing Copernicus’ theory sun earth earth sun Showing Copernicus’ theory A diagram showing the solar system with the earth at its centre A diagram showing the solar system with the sun at its centre Before Copernicus’ theory Careful Reading 1. Why could he not tell about his theory? (Para 1) 2. What was his theory about? (Para 1) Because the powerful Christian Church would have punished him for even suggesting such an idea. 2. What was his theory about? (Para 1) The earth was not the centre of the solar system. Only if you put the sun there did the movements of the other planets in the sky make sense. 1. Why could he not tell about his theory? (Para 1) 3. What had the astronomers noticed in the sky? (Para 2) 4. When did Copernicus complete his theory? (Para 3) 3. What had the astronomers noticed in the sky? (Para 2) They had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop. Others appeared brighter at times and less bright at others. 4. When did Copernicus complete his theory? (Para 3) Between 1510 and 1514 he worked on it, gradually improving his theory until he felt it was complete. 5. How did he explain changes in the movement of the planets and in the brightness of the stars? When did he publish his idea? (Para 4) 6. Why do people think that there is a direct link between his ideas and the work of Isaac Newton, Albert Einstein and Stephen Hawking?(para 5) 5. How did he explain changes in t