Unit 3

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