03B5

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Across
  1. 4. to be very good at a subject or activity
  2. 8. the study of the various parts of living things
  3. 9. the act of two things hitting into each other
  4. 12. related to logic and reasoning
  5. 14. based on theory rather than experience
  6. 16. related to the sky or outer space
  7. 17. a person’s ability to understand things easily
  8. 18. a group of stories from a particular country or region
  9. 19. a set of ideas about time and space developed by Albert Einstein
  10. 20. able to think or act successfully
Down
  1. 1. an unmarried man
  2. 2. the study of human society, its organizations, and problems
  3. 3. a certificate proving someone has completed their studies
  4. 5. to state a fact or belief with confidence
  5. 6. letting out radiation or related to radiation
  6. 7. intelligent
  7. 10. the study of the Earth’s natural structures and how they change
  8. 11. an advanced type of mathematics
  9. 13. related to learning and knowing things
  10. 15. to control and use something, usually to make energy