必修五 Unit1 Copernicus revolutionary theory含语言点

Showing Copernicus’ theory
A diagram showing the solar system with the sun at its centre
Careful Reading
1. Why could he not tell about his theory? (Para 1) 2. What was his theory about? (Para 1)
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)
He published his idea as he lay dying in 1543.
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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)
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)
He placed a fixed sun at the centre of the solar system with the planets going round it and only the moon still going round the earth. He also suggested that the earth was spinning as it went round 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
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.
3. What had the astronomers noticed in the sky? (Para 2) 4. When did Copernicus complete his theory? (Para 3)
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.
1. Why could he not tell about his theory? (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)
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.
Because his theory is now the base on which all our ideas of the universe are built. His theory replaced the Christian idea of gravity. He showed this was obviously wrong.
sun
earth
Before Copernicus’ theory Showing Copernicus’ theory
sun
earth
sun
earth
Before Copernicus’ theory
A diagram showing the solar system with the earth at its centre