Week 1 Crossword root puzzle

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Across
  1. 1. cavalry men in command of a squad
  2. 3. of "good sound"
  3. 6. a harsh unpleasant sound
  4. 7. mayor of modern greece
  5. 9. instrument invented by John Phillip Sousa
  6. 11. the study of family lines
  7. 12. descendant of someone
  8. 15. said from one suffering from dropsy
  9. 16. one who has a aversion to people
  10. 17. a machine to measure velocity for rotation
  11. 18. science of measuring circles
Down
  1. 2. an amateur astronomer
  2. 4. a circular picture of a 360 degree scene, viewed from inside
  3. 5. a beautiful plant that needs much water
  4. 8. the starfish family
  5. 10. gaining power through arousing people's emotions
  6. 13. the worship of the stars
  7. 14. fear of water