Unit9

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Across
  1. 4. the study of the Earth's natural structures and how they change
  2. 6. an unmarried man
  3. 7. an important part of the whole
  4. 9. intelligent
  5. 10. the smallest amount
  6. 11. the study of human society, its organizations, and problems
  7. 13. the act of two things hitting into each another
  8. 14. the study of how the brain affects our thought and actions
Down
  1. 1. it is based on theory rather than experience
  2. 2. the work you do to earn money
  3. 3. a set of ideas about time and space developed by Albert Einstein
  4. 5. to be very good at it
  5. 8. it is related to logic and reasoning
  6. 12. a certificate proving that someone had completed their studies