Word Association

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Across
  1. 3. rotate
  2. 5. thermal
  3. 7. water
  4. 9. reflect
  5. 11. insulator
  6. 12. mass
  7. 14. producer
  8. 16. matter
  9. 17. conductor
  10. 18. structure
  11. 19. friction
Down
  1. 1. wind
  2. 2. precipitation
  3. 3. sun
  4. 4. gravity
  5. 6. circuit
  6. 8. mechanical
  7. 10. weather
  8. 13. larva
  9. 15. weathering