Unit 5 Crossword Puzzle

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Across
  1. 3. to determine using reason, logic, or mathematical terms
  2. 7. the period of time between two events
  3. 9. complete and not broken or damaged
  4. 10. similar in every detail; exactly alike
  5. 12. the line where the earth and sky seem to meet
  6. 13. to cause problems and prevent something from continuing in its usual way
  7. 14. the main and largest part of something
  8. 16. to follow something from its origin
  9. 17. to suddenly disappear
  10. 18. to spread over or cover a large area of land
  11. 19. approximately or about; not exactly
Down
  1. 1. when someone sails a ship over areas of water
  2. 2. difficult to deal with
  3. 4. spread over a wide area
  4. 5. a person related to someone from an earlier generation
  5. 6. a piece of information that helps you solve a problem
  6. 7. extremely large
  7. 8. the speed at which something happens; or the number of times it happens in a particular period
  8. 11. similar to and able to be compared with something else
  9. 15. an event that can be observed and studied