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This printable supports Common Core ELA Standards ELA-Literacy.RI.9-10.2, ELA-Literacy.RI.9-10.3 and ELA-Literacy.RI.9-10.4

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Scientific Text Analysis (Grade 9)

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Scientific Text Analysis

THE ANCIENT VIEW

It is never safe, as we know, to judge by appearances, and this is perhaps more true of astronomy than of anything else.

For instance, the idea which one would most naturally form of the earth and heaven is that the solid earth on which we live and move extends to a great distance in every direction, and that the heaven is an immense dome upon the inner surface of which the stars are fixed. Such must needs have been the idea of the universe held by men in the earliest times. In their view the earth was of paramount importance. The sun and moon were mere lamps for the day and for the night; and these, if not gods themselves, were at any rate under the charge of special deities, whose task it was to guide their motions across the vaulted sky.

Little by little, however, this simple estimate of nature began to be overturned. Difficult problems agitated the human mind. On what, for instance, did the solid earth rest, and what prevented the vaulted heaven from falling in upon men and crushing them out of existence?[Pg 18] Fantastic myths sprang from the vain attempts to solve these riddles. The Hindoos, for example, imagined the earth as supported by four elephants which stood upon the back of a gigantic tortoise, which, in its turn, floated on the surface of an elemental ocean. The early Western civilisations conceived the fable of the Titan Atlas, who, as a punishment for revolt against the Olympian gods, was condemned to hold up the expanse of sky for ever and ever.

Later on glimmerings of the true light began to break in upon men. The Greek philosophers, who busied themselves much with such matters, gradually became convinced that the earth was spherical in shape, that is to say, round like a ball. In this opinion we now know that they were right; but in their other important belief, viz. that the earth was placed at the centre of all things, they were indeed very far from the truth.

By the second century of the Christian era, the ideas of the early philosophers had become hardened into a definite theory, which, though it appears very incorrect to us to-day, nevertheless demands exceptional notice from the fact that it was everywhere accepted as the true explanation until so late as some four centuries ago. This theory of the universe is known by the name of the Ptolemaic System, because it was first set forth in definite terms by one of the most famous of the astronomers of antiquity, Claudius Ptolemæus Pelusinensis (100–170 a.d.), better known as Ptolemy of Alexandria.

In his system the Earth occupied the centre; while around it circled in order outwards the Moon, the planets Mercury and Venus, the Sun, and then the planets Mars, Jupiter, and Saturn. Beyond[Pg 19] these again revolved the background of the heaven, upon which it was believed that the stars were fixed—

"Stellis ardentibus aptum,"

as Virgil puts it (see Fig. 1).
The Ptolemaic system persisted unshaken for about fourteen hundred years after the death of its author. Clearly men were flattered by the notion that their earth was the most important body in nature, that it stood still at the centre of the universe, and was the pivot upon which all things revolved.
1. 
What "ancient view" is the passage describing?
  1. The ancient view of society
  2. The ancient view of the earth
  3. The ancient view of the solar system
  4. The ancient view of man
2. 
At first, people thought the sun and moon were controlled by...
  1. Gravity
  2. Force
  3. Special switches
  4. The gods
3. 
In ancient times, men thought Earth was the most important body in the universe.
  1. True
  2. False
4. 
The Hindoos believed that the earth was held up by elephants.
  1. True
  2. False
5. 
Humans were content to continue to accept the different myths and fables surrounding the position of the Earth, Sun, and Moon.
  1. True
  2. False
6. 
Which detail helped begin to form a different view of the Earth and solar system?
  1. The Earth was spherical in shape.
  2. The Earth was situated below the heavens.
  3. The Earth was sitting in an ocean.
  4. The ancient philosophers could view the Earth from afar.
7. 
Who came up with the most widely accepted view of the Earth during the ancient time?
  1. Galileo
  2. Socrates
  3. Ptolemy
  4. Aristotle
8. 
What did the ancient philosophers and Ptolemy agree on?
  1. The Earth was the center of the universe.
  2. The Earth was held up by elephants.
  3. The Earth revolved around the sun.
  4. The Earth was not surrounded by other planets.
9. 
Briefly describe the Ptolemaic System.



10. 
The original text contained figures to help illustrate its information. Choose one detail from the text and draw a diagram to illustrate it, labeling the parts.



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