Transportation

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Across
  1. 2. force/area
  2. 6. explain how things float
  3. 9. density = ________ /volume
  4. 10. friction affected by rubbing surfaces
  5. 13. buoyancy that floats
  6. 14. _________boat
  7. 16. amount of space an object occupies
  8. 17. upward force of a fluid
  9. 19. friction affected by tread on tires
Down
  1. 1. ________ brothers
  2. 3. goes on your feet
  3. 4. pattern on sole of shoe
  4. 5. buoyancy that sinks
  5. 7. force that opposes motion
  6. 8. first human flight vehicle
  7. 11. principle that explains flight
  8. 12. aka fluid friction in cars
  9. 15. _______print
  10. 18. length x width