Unit 17 sound waves

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Across
  1. 4. think
  2. 5. thank you
  3. 6. pencil
  4. 9. vehicle
  5. 10. brain
  6. 12. who———-the best in crossword
  7. 14. head part
  8. 16. sun
  9. 17. shock
  10. 18. shop
Down
  1. 1. sad
  2. 2. shape
  3. 3. happy
  4. 6. question
  5. 7. surrounded by water.
  6. 8. tower
  7. 10. you
  8. 11. from a game
  9. 13. some times
  10. 15. 4————by 2 is 2