Science

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Across
  1. 4. — Sea-level air pressure is 14.7 psi.
  2. 5. — Pressure from 1 ft water column = 0.433 psi.
  3. 7. — Common gas example in options.
  4. 8. — Metric temperature scale (water boils at 100°C).
  5. 11. — Metal returns to original form after bending/stretching.
  6. 13. — Formula for methane (natural gas).
  7. 14. — Fuel gas example listed in question.
  8. 15. — Common way to control pipe expansion.
  9. 21. — Concept used in propane density question.
  10. 26. — Force needed to lift load vertically (RF = m×g).
  11. 27. — Heat unit: raises 1 lb of water by 1°F.
  12. 29. — State of matter that is easily compressed.
  13. 32. — Heating value of natural gas (~1000 BTU/ft³).
  14. 34. — Inert gas option in the exam list.
  15. 35. — Water vapor / gas example.
  16. 37. — Gas example in options.
  17. 39. — Pipe length increases when heated.
  18. 43. — Acceleration 9.8 m/s² used in RF problems.
  19. 44. — Heat needed to raise 1 lb of a substance by 1°F.
  20. 45. — State with fixed volume but no fixed shape.
  21. 47. — Gas volume decreases as pressure increases at constant temperature.
  22. 50. — Condition needed to let atmospheric pressure lift water.
  23. 51. — Heat that causes a temperature change measured by thermometer.
  24. 53. — Max height (ft) atmosphere can support water.
  25. 54. — Gas volume changes directly with temperature at constant pressure.
  26. 56. — Device used to gain mechanical advantage.
  27. 57. — Metal can be drawn into wire.
Down
  1. 1. — Fulcrum between effort and resistance.
  2. 2. — Temperature scale used in most exam problems.
  3. 3. — Heat for change of state without temperature change.
  4. 6. — −460°F, lowest possible temperature.
  5. 9. — Natural gas chemical formula is CH4.
  6. 10. — Lightest element by atomic weight.
  7. 12. — Heat transfer by movement of air/fluid.
  8. 13. — Metric heat unit option contrasted with BTU.
  9. 16. — Water boiling temperature at standard conditions.
  10. 17. — State of matter with fixed shape and volume.
  11. 18. — Fuel gas with formula C3H8.
  12. 19. — Cooling process contrasted with convection in questions.
  13. 20. — Force required to pull metal apart.
  14. 22. — Center of atom containing protons and neutrons.
  15. 23. — Gauge pressure above atmospheric pressure.
  16. 24. — Neutral particle in the nucleus.
  17. 25. — Gas pressure changes with temperature at constant volume.
  18. 28. — Pressure unit: pounds per square inch.
  19. 30. — Pressure applied to enclosed fluid is equal in all directions.
  20. 31. — Coefficient of expansion used in pipe-growth math.
  21. 33. — Chemical formula for propane.
  22. 36. — Effort distance ÷ resistance distance.
  23. 38. — Heat transfer by direct contact.
  24. 40. — Heat transfer by electromagnetic waves.
  25. 41. — Resistance to sliding/cutting force.
  26. 42. — Positively charged particle in the nucleus.
  27. 46. — Metal can be hammered/formed without breaking.
  28. 48. — Absolute pressure used in gas-law calculations.
  29. 49. — Pivot point of a lever.
  30. 52. — Element option listed with gases.
  31. 55. — Basic building material of substances.