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56 Multiple choice questions

  1. sink
  2. volume
  3. Buoyancy Force
  4. force, area
  5. Pressure applied to a fluid in a closed container is transmitted equally to every point of the fluid and to the walls of the container
  6. pressure of each side is the same
  7. a fluid that has no internal friction or viscosity and is incompressible
  8. rides higher in salt water. Because the density of the water is higher. Which means that the weight of the displaced water is higher, so the ship needs less displaced water to balance it's weight.
  9. laminar, turbulent
  10. the concentration of the mass of an object, measured in mass per unit volume of a substance
  11. areaspeed in region1=area speed in region 2
  12. mass density=mass/volume
  13. No. Pressure is force per unit area: p=f/a. Thus it does not require a large force to produce a large pressure.
  14. fluid
  15. mass, volume
  16. conservation, mass
  17. liquid pressure increases with depth; it increases with density
  18. The weight of the teacher would be spread out across the nails rather than all centered on one, preventing the nails going through the body of the teacher.
  19. incompressible
  20. there is a greater pressure against the bottom
  21. flow
  22. same
  23. atmospheric, free
  24. fluid, gases
  25. the magnitude of the race on a surface per unit area
  26. the pressure in a fluid decreases as the fluid's velocity increases

    ex.) as air flows around an airplane wing, air above moves faster than air below, producing a lift
  27. Archimedes principal is: "The upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body". So, the upwards force on the beach ball is equal to the weight ot the water idisplaced when pushed underwater.
  28. displaced
  29. remains at any level
  30. No, a straw will not function on the Moon because there is no atmosphere.
  31. less speed and kinetic energy
  32. Since pure Oxygen is heavier than air, a balloon filled with Oxygen would sink because of its heavier contents plus the weight of the balloon
  33. they are equal
  34. afloat
  35. Liquids and gases exert pressure equally in all directions.
  36. weight, fluid, displaced
  37. depth, fluid
  38. A1v1 = A2v2
  39. opposite direction
  40. a nonskid state of matter in which the atoms or molecules are free to move past each other, as in a gas or a liquid
  41. perpendicular to the surface of the can
  42. Pascal; Pa
  43. 1) an object more dense than the fluid in which it is immersed sinks
    2) an object less dense than the fluid sinks
    3) an object with equal density to the fluid neither sinks nor floats
  44. rise to the surface and float
  45. Because of the pressure of the water, forces act on the boat. The resulting force is the buoyancy force, which pushes the boat up.
  46. 10 N
  47. the weight of the displaced water
  48. The two are equal because the buoyant force depends only upon the density and volume of the liquid that is displaced.
  49. because of buoyancy in water your body comes up stimulating weightlessness.... hence astronauts train underwater
  50. density
  51. area
  52. kilograms per cubic meters
  53. the upward force exerted by a liquid on an object immersed in or floating on the liquid
  54. depth
  55. ideal fluid
  56. high, low