OUR EARTH WORKSHEET I. Write the names of the planets in the correct order: directions Big bang space eight solar system stars expanding explosion planets size II. Fill in the blanks by choosing the appropriate word from the box. THE MILKY WAY GALAXY Millions of years ago an explosion called the _____________________ occurred in which a hot condensed matter was scattered in all _______________. Out of that _______________ several zones of stars and ____________________________ emerged. In our solar system there are _______________ planets. The Earth is one among them. The Universe is a vast expanse of ____________ which contains everything in existence. It comprises galaxies, _______________ and ______________. The exact ____________ of the universe is still unknown. Scientists believe that the universe is still _______________________ outward. III. Answer the following questions: 1. Why is it believed that only earth has life while the other planets don’t?
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I.
mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus, Neptune
II.
1. big bang
2.directions
3. explosion
4. planets
5. eight
6. space
7. solar system
8. milky way
9. size
10. expanding
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