Book M Ch 3 Test

25 Questions

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Book M Ch 3 Test

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Questions and Answers
  • 1. 
    Pressure is equal to
    • A. 

      Force x area

    • B. 

      Force / area

    • C. 

      Mass / volume

  • 2. 
    The SI unit of pressure is the
    • A. 

      Millibar

    • B. 

      Newton

    • C. 

      Pascal

  • 3. 
    If the area decreases, the pressure
    • A. 

      Increases

    • B. 

      Decreases

    • C. 

      Remains the same

  • 4. 
    A pascal is
    • A. 

      1 M/n

    • B. 

      1 N/m2

    • C. 

      1 kg/m

  • 5. 
    A tall thin glass and a wide short glass both have equal amounts of water. The pressure on the bottom of the tall thin glass is ___ than the pressure on the bottom of the wide short glass.
    • A. 

      Greater than

    • B. 

      Less than

    • C. 

      The same as

  • 6. 
    A substance that has no definate shape and has the ability to flow
    • A. 

      Solid

    • B. 

      Fluid

    • C. 

      Gas

  • 7. 
    An instrument used to measure air pressure
    • A. 

      Barometer

    • B. 

      Anemometer

    • C. 

      Graduated cylinder

  • 8. 
    Place a check mark on all of the following that are fluids
    • A. 

      Cloth

    • B. 

      Water

    • C. 

      Ice

    • D. 

      Paper

    • E. 

      Soup

    • F. 

      Motor oil

  • 9. 
    Place a check mark on all of the following that ARE NOT fluids
    • A. 

      Helium

    • B. 

      Paper clip

    • C. 

      Plasma

    • D. 

      Wet paint

    • E. 

      Ice

    • F. 

      Cloth

  • 10. 
    The pressure exerted on an object by a fluid is always perpendicular to the surface of the object
    • A. 

      True

    • B. 

      False

  • 11. 
    The bouyant force depends upon the shape of the object in the fluid.
    • A. 

      True

    • B. 

      False

  • 12. 
    Density is force/unit area
    • A. 

      True

    • B. 

      False

  • 13. 
    As you increase the area over which a force is applied, you decrease the pressure
    • A. 

      True

    • B. 

      False

  • 14. 
    For an object to sink in a fluid there must be an unbalanced force
    • A. 

      True

    • B. 

      False

  • 15. 
    Bouyant force acts in all directions
    • A. 

      True

    • B. 

      False

  • 16. 
    Pascal's principle explains hydraulic systems
    • A. 

      True

    • B. 

      False

  • 17. 
    The upward force on an airplane's wing is thrust
    • A. 

      True

    • B. 

      False

  • 18. 
    The pressure of an object is equal to the ___ applied to the surface of the object.
    • A. 

      Force per unit of volume

    • B. 

      Force per unit of area

    • C. 

      Mass per unit of volume

    • D. 

      Mass per unit of area

  • 19. 
    If you were walking in the snow and add snowshoes to your boots, the pressure on the snow would ___.
    • A. 

      Become less

    • B. 

      Become greater

    • C. 

      Not change

    • D. 

      Decrease with the depth of snow

  • 20. 
    A fluid always
    • A. 

      Has definate shape and volume

    • B. 

      Can be compressed and flows

    • C. 

      Has no definate shape and flows

    • D. 

      Fills the volume of the container

  • 21. 
    The bouyant force
    • A. 

      Exerts a downward force on an object

    • B. 

      Exerts an upwards force on an object

    • C. 

      Is less than the density of water

    • D. 

      Resists the motion of an object

  • 22. 
    The bouyant force on an object is equal to the __.
    • A. 

      Volume of the fluid it displaces

    • B. 

      Weight of the fluid it displaces

    • C. 

      Volume of the object

    • D. 

      Weight of the object

  • 23. 
    As the speed of a fluid decreases, the pressure it exerts ____.
    • A. 

      Increases

    • B. 

      Decreases

    • C. 

      Remains the same

    • D. 

      Becomes infinate

  • 24. 
    If you squeeze the bottom of a closed tube of toothpaste, the pressure is increased ___.
    • A. 

      On the sides of the tube

    • B. 

      Everywhere in the tube

    • C. 

      On the bottom of the tube

    • D. 

      On the top of the tube

  • 25. 
    In a hydraulic system, the pressure on the large piston is ___ the pressure on the small piston
    • A. 

      Greater than

    • B. 

      Less than

    • C. 

      The same

    • D. 

      Not related to