Passage for Exercise-64

Read the following passage carefully and answer the questions given below:

   We do not feel the earth’s movement because we are travelling with it at the same speed. ‘But it does move in two ways. First of all it spins round on its axis just like a top. The axis is through the top and bottom of the earth—the north and the south Poles. The earth makes one complete rotation in twenty four hours. This spinning causes our days and nights. Day is when our part of the earth’s globe is facing the sun. Night is when we Spin out of the reach of the Sun’s rays. Astronomers call the whole twenty four hour period the ‘solar day’, The earth spins towards the east which makes the sun appear to move in the opposite direction from east to west.

   The earth’s second motion is in its orbit around the sun which is 150 million kilometers away. It takes the earth almost 3651 days to travel once round its orbit. This period we call a year. The other planets each have a ‘day’ and a ‘year’ but their days and years are different from the earth’s ; because they are of different sizes and lie at different distances from the sun.


(a) We don’t feel the movement of the earth, because
(i) the sun is moving with the earth.
(ii) we are moving with the earth.
(iii) the earth is moving with the sun.

Find out the correct statement and write down the complete sentence.

(a) In how many ways does the earth move?
(b) Why don’t we get the sun rays at night?
(c) In which side does the sun rise in the sky and why?
(d) Why have the other planets different days and years?
(e) Pick out a word which means “people who study the move ment of the sun and the planets and other heavenly bodies.”

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