Science 9 Semester 1 Extra Credit

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Across
  1. 2. air pressure _____ as altitude increases
  2. 5. movement in relation to frame of reference
  3. 8. opposes the motion of objects that touch
  4. 10. ratio of mass to area
  5. 11. ______ force allows satellites to orbit
  6. 13. 2 or more velocities add by vector ______
  7. 14. unit of force
  8. 15. length of path between two points
  9. 16. equal to the weight of fluid displaced
  10. 20. a force that acts between any two masses
  11. 22. upward force of a fluid
  12. 23. ratio of distance to the amount of time taken
  13. 24. rate at which velocity changes
  14. 27. pressure of fluid decreases with speed
  15. 28. system uses pistons and pressurized fluid
Down
  1. 1. movement to ground solely by gravity
  2. 3. speed on a distance-time graph
  3. 4. overall force acting on an object
  4. 6. fluid friction acting through the air
  5. 7. a push or pull acting on an object
  6. 9. speed and direction of motion
  7. 12. force distributed over an area
  8. 17. school I attend
  9. 18. a measure of inertia
  10. 19. the unit for pressure
  11. 21. distance/time
  12. 25. a substance that assumes the shape of container
  13. 26. tendency of an object to resist motion