Scientific Crossword

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Across
  1. 5. It uses science
  2. 7. Basic materials that can't be broken
  3. 8. many changes
  4. 9. earth in center
  5. 10. pull of the earth
Down
  1. 1. ruler has total power
  2. 2. sun in the center
  3. 3. oval shapes
  4. 4. To rethink tradition
  5. 6. Main source of knowledge